A high-yielding subsidiary without environmental protection: The End Millennium. The simplest low-frequency power supply on transistors Powerless power supply without life

Not mriy, diy!

Experiments on how to improve the sound, which is carried out for the help of the support described in the previous three parts of the project, is similar to the modernization of the living block. The design of the living block may have the following advantages:
- Valuable features of a real audio signal;
- Spend some money at the straight bridge;
- Option of bipolar power supply for front power cascades.
The living block can be used both for the project and for independent design of sound frequencies.

Zagalni respect

We can appreciate the help to the core of life (IP) with the improvement of fundamental knowledge, which will speed up the development of the programs. We can look at the spivvіdnoshennia in the outer cascade of the UMZCH, as it works in class AB at the boundaries, it was possible before the design of the IP.
The maximum voltage at the output of the pidsiluvach:

Uwire max=sqrt(2Pn maxRn),

the amplitude of the zminny strum in the scope of the vanishing reach:

Ivor max=Uvor max/Rн.

Boundary (ideal) CCD of a two-cycle complementary repeater with a sinusoidal signal

ηmax=Pl/Pcont=π/4≈0.78.

The tension of the sound frequency can be seen as a change in the tension of the fast struma and the tension of the snake's struma. Acceptable CCD of such a turnaround (at Pn max) = 0.7.
For the presence of the condenser Sp in the lance, the life of the patient will be

Ip≈Pn max/(2ηUp).

Razrahunki for induction spіvvіdshennyami show (Fig. 1) that the post-strium Ip at six times is less than the maximum stress struma Ivih max. This fact once again denounces the importance of the breeding of lancers in life in subsidiaries. Recommendations for the installation of low-current and high-current lances were given in the first part of the project.

Rice. 1. Screenshot of IP analysis for Microsoft Excel. At the middle of the filling of light blue color, there is an entry date, orange color - rozrahunkovy spivvіdnoshennia

The main spіvvіdnoshnja, nebhіdnі for estimating rozrahunka unstabilized dzherel zhivlennja, scho zabezpechuє at strumі vantazhennya In the voltage Un , pointing in the file, scho dodaetsya lower. Rozrahunok is carried out to break the circuit, in the capacity of the output voltage Un, the total voltage 2Up is taken, and the accumulative capacitor Sp is two series-connected capacitors of the double rozrahunkovo ​​єmnostі (Fig. 2).

Rice. 2. Bridge IP for two symmetrical bolts

The file with the explanations of the rozrachunkovyh spіvvіdnoshenie can be taken here:

--
For respect!

The results of rozrahunkiv after pointing formulas on another arcush file xls, and on the screen of the arcush fragment are shown in fig. 3.

Rice. 3. Table of results of the IP survey

Necessary transformer tension and the parameters of the diodes are taken off for the maximum output tension of the UMZCH. Required power transformer with a voltage of 70...80 W and a diode with a direct stream 2 A, a pulse stream 50 A, a reverse voltage of 200 V.

Main parameters:
Input voltage: ~2х(15…20)
Maximum strum drive: up to 4 A
Working strum jet of life ±15 V: 50 mA
Rosemary pay: 54x150 mm.

Below, we will discuss food, arguably indicating that Corresponding information from the preparation of the block of life can be gleaned from.

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For respect!
Igor Kotov, editor-in-chief of "Datagor" magazine

On the other side of the board, small-sized parts are installed: fused capacitors, diodes, electrolytic capacitors of a bipolar dzherel life. Then we mount the terminal blocks and the electrical filter capacitors, which are smoothed. After soldering, the rest of the bag is additionally marked on the other board for additional hot-melt adhesive.
Necessary electric glue gun (Fig. 10), intended for gluing together materials made of plastic, metal, ceramics and other materials. Vіn vikoristovuєtsya for fixing large-sized parts (oxide capacitors, transformers, chokes) on other boards, fixing roses and other purposes.

The stained glass material for gluing is silicone hot melt adhesive, which is used in looking cylindrical haircuts with a diameter of 11 mm in different colors. The shear is inserted through the opening at the back of the plastic case. Once included in the measure, that heating tool is ready to work. The sting of the gun allows you to work at important places, and the trigger - the dispenser ensures that the supply of glue through the heating element is controlled. Once the melted silicone mass is pressed onto the surface that is being glued, then press the details until the hot melt glue is melted.

Rice. 10. The gun for glue

Details of the living block:

DA1 - Stabilizer 7815 (15V; 1.0A), TO-220 - 1 pc.,
DA2 - Stabilizer 7915 (-15V; 1A), TO-220 - 1 pc.,
Radiator U-shaped FK301, aluminium, 13.3x19.1x12.7mm, for TO-220 type cases – 2 pcs.
VD1…VD4 - Schottky diode 80SQ045-IR (45V/8A) – 4 pcs.,
R1 - Res.-0.25-470 Ohm (yellow, purple, brown, golden) - 1 pc.,
C1 - Cond. 0.1/1000V K78-2 - 1 pc.,
C2, C15 ... C18 - Cond. 0.1µ/63V J K73-17 - 5 pcs.,
C3 ... C6 - Cond.0.01 / 630V K73-17 - 4 pcs.,
С7 ... С14 - Cond. 4700/35V 1840 +105 ° С - 8 pcs.,
С19, С20 - Cond.100/25V 0809 105 ° C - 2 pcs.,
Terminal block 3K krok 5 mm TV-03VS per board - 3 pcs.
FU1 - Protector for the accessory block 5x20 mm, FH-02, - 1 pc.,
poper. 1A (d = 5; L = 20) - 1 PC.,
XP1 - pcs. "Merezha" CS-001 appr./drying - 1 pc.,
Contact type "O", TRI-1.25-2.5-M5, insulated - 2 pcs.,
XT1 - Attachment terminal - 1 pc.,
SA1 - Vimicac living 250V, 6A - 1 pc.

Preparation of a garni dzherel zhivlennya for pіdsilyuvacha potuzhnostі (ULF) or other electronic attachment - tse duzhe vіdpovіdalne zavdannya. In addition, in order to be alive, I will lay down the quality and stability of the work and the whole annex.

In this publication, we will tell you about the preparation of a light transformer block for living for my self-contained low frequency tension suppressor "Phoenix P-400".

Such, not folding block life can be vicorated for life of various schemes of low frequency pressure suppression.

Peredmova

For the possible block of life (BP) before the power supply, I already had a toroidal core with a wound primary winding at ~ 220V, so the choice of "impulse power supply or on the basis of a fencing transformer" was not required.

Impulse dzherel zhivlennya small dimensions and vaga, great tension at the exit and high KKD. Dzherelo living on the basis of a wire transformer - maє great vaga, easy to prepare and get paid, and also not to be brought to the right by the mother with unsafe tension in the work of the scheme, which is especially important for such buds like me.

Toroidal transformer

Toroidal transformers, paired with transformers on armored cores made of W-like plates, may have some advantages:

• lesser obsyag that vaga;
• high KKD;
• best cooling for windings.

The primary winding already covered about 800 turns with PELSHO wire 0.8 mm, it was filled with paraffin and insulated with a ball of thin stitching from fluoroplastic.

Vimіryavshi approximating the expansion of the transformer hall, you can vikonati razrahunok yogo overall tightness, in this way you can figure out what to go for otrimannya necessary tightness nі.

Rice. 1. Diagnosis of the injection core for a toroidal transformer.

• Dimensional pressure (W) \u003d Vision area (cm 2) * Cross section area (cm 2)
• Square area \u003d 3.14 * (d / 2) 2
• Cross section area \u003d h * ((D-d) / 2)

For example, it is necessary to expand the transformer with the dimensions of the hall: D=14cm, d=5cm, h=5cm.

• Width area \u003d 3.14 * (5 cm / 2) * (5 cm / 2) \u003d 19.625 cm 2
• Cross section area \u003d 5cm * ((14cm-5cm) / 2) \u003d 22.5 cm 2
• Overall pressure = 19.625 * 22.5 = 441 W.

The overall tension of the transformer showed clearly less than I estimated - here 250 watts.

Voltage supply for secondary windings

Knowing the required voltage at the output of the rectifier following the electrical capacitors, it is possible to calculate the required voltage at the output of the secondary winding of the transformer.

The numerical value of the constant voltage after the diode bridge and capacitors, which are smoothed, is approximately 1.3..1.4 times higher, in equal amounts of the variable voltage, which is applied to the input of such a voltage.

In my opinion, for living the UMZCH requires a bipolar constant voltage - 35 volts on the skin shoulder. Obviously, the voltage on the secondary winding can be changed: 35 Volts / 1.4 = ~25 Volts.

Following the same principle, I studied the approximate value of the voltage of the other secondary windings of the transformer.

Rozrahunok kіlkostі vitkіv ta winding

For the life of the other electronic blocks of the substation, it was necessary to wind a sprat of okremih secondary windings. For winding the coil with a medium enameled dart, a wooden chovnik is made. Also, yoga can be made from sclotextolite or plastic.

Rice. 2. Coil for winding a toroidal transformer.

The winding was beaten with a medium enameled dart, like a boon in reality:

• for 4 windings of live UMZCH - wire with a diameter of 1.5 mm;
• for reshti windings - 0.6 mm.

The number of turns for the secondary windings I picked up in an experimental way, but I did not know the exact number of turns of the primary winding.

The essence of the method:

1. Vikonuemo winding 20 turns of any kind of dart;
2. Connect up to a measure of ~ 220V to the primary winding of the transformer and change the voltage on the winding of 20 turns;
3. Dilimo will need a voltage on the otriman of 20 turns - we know how many times of 20 turns are required for winding.

For example: we need 25V, and from 20 turns we got 5V, 25V / 5V = 5 - we need to wind 5 times 20 turns each, so 100 turns.

The winding up of the necessary dart was wound up like this: having wound 20 turns of the dart, scribbling on a new mark with a marker, winding and wiping the yogo dozhina. Having divided the required number of turns by 20, having multiplied the value by the length of 20 turns of the dart, having removed approximately the necessary length of the dart for winding. Having added 1-2 meters to the reserve to the shackle, you can wind the wire on the cloak and boldly cut it.

For example: you need 100 turns of a dart, a length of 20 windings of a dart was 1.3 meters, we know how many times it is 1.3 meters each, it is necessary to wind a 100 twitch for a trimming of 100 turns - 100/20 = 5, 3m) - 1.3 * 5 = 6.5m. We add for a reserve of 1.5 m and we take a margin of 8 m.

For the skin stepping winding, repeat the varto, the shards with the new skin winding are necessary for one turn of the dozhin dart to be increased.

For winding the skin pair of windings of 25 volts on the bar, two darts are placed in parallel in a row (for 2 windings). After winding, the end of the first winding of the zadnany with the cob of the other - two secondary windings were left for the bipolar winding of the winding in the middle.

After winding the skin with pairs of secondary windings for the life of the UMZCH circuits, the stench was insulated with a thin fluoroplastic string.

In this order, 6 secondary windings were wound: chotiri for the life of the UMZCH and two more for the life blocks of the electronics.

Scheme of rectifiers and voltage stabilizers

Below is a principle diagram of a block of life for my self-proclaimed podsilyuvacha of tension.

Rice. 2. Principal scheme of the life of a self-contained supporter for the tightness of the woofer.

For vivlennya schemes pіdsiluvachіv natuzhnostі LF vykoristovuyutsya two bipolar vibrating - A1.1 and A1.2. Other electronic blocks of the power supply unit are used as voltage stabilizers A2.1 and A2.2.

Resistors R1 and R2 are needed for discharging electrical capacitors, if the lines of life are switched on in the circuits of the auxiliary voltage.

My UMZCH channel 4 has more power, you can turn on that switch in pairs for additional switches, so you can switch the live lines of the UMZCH line for additional electromagnetic relays.

Resistors R1 and R2 can be switched off from the circuit, so that the living unit will be constantly connected to the UMZCH boards, in this case, the electrical capacities will be discharged through the UMZCH circuit.

Diode KD213 is covered by the maximum direct strum 10A, at least enough. Diode area D5 strum coverage is not less than 2-3A, picking yoga from 4 diodes. C5 and C6 are capacitances, the skin of which consists of two capacitors of 10,000 microfarads per 63V.

Rice. 3. Principal schemes of constant voltage stabilizers in microcircuits L7805, L7812, LM317.

Deciphering the names on the diagram:

• STAB - voltage stabilizer without regulation, strum not more than 1A;
• STAB+REG - voltage stabilizer with regulation, strum not more than 1A;
• STAB+POW - regulation voltage stabilizer, strum approximately 2-3A.

With different microcircuits LM317, 7805 and 7812, the output voltage of the stabilizer can be developed using a simple formula:

Uin = Vxx * (1 + R2/R1)

Vxx for microcircuits can have the same meaning:

• LM317 - 1.25;
• 7805 - 5;
• 7812 - 12.

Butt razrahunka LM317: R1=240R, R2=1200R, Uout = 1.25*(1+1200/240) = 7.5V.

Construction

The axis was planned to vicorate the voltage in the block of life:

• +36V, -36V - pressure suppression on TDA7250
• 12B - electronic volume controls, stereo processors, exhaust pressure indicators, thermal control circuits, fans, lighting;
• 5V - temperature indicators, microcontroller, digital control panel.

Microcircuits and transistors of voltage stabilizers were fixed on small radiators, like I pulled out of non-working computer blocks of life. The cases were fastened to the radiators through insulating gaskets.

Drukovana board was made of two parts, the skin of which to replace the bipolar straightener for the UMZCH circuit and the necessary set of voltage stabilizers.

Rice. 4. One half of the platy dzherel zhivlennya.

Rice. 5. Another half of the payment is life.

Rice. 6. Ready-made components of the block of life for a self-contained pressure reliever.

Pіznіshe, with nagodzhennі I dіyshov vysnovka, scho richly sruchnіshe would be able to prepare voltage stabilizers on okremih boards. Tim is no less, the option "all on the same board" is also disgraceful and handy.

Also, a vipryamlyach for UMZCH (scheme 2) can be selected by hanging installation, and stabilizer circuits (Figure 3) for the required quantity - on other boards.

The assembly of the electronic components in the rectifier is shown in small 7.

Rice. 7. Circuit diagram for selecting a bipolar rectifier -36V + 36V for a different wall mounting.

Z'ednannya need to be vicarious, vicorous and insulated copper conductors.

One place with 1000pF capacitors can be placed on a cool radiator. Installation of tight diodes KD213 (tablets) on one hot radiator needs to be wired through insulating thermal pads (thermal rubber or mica), one of the shards of the diode can be contacted with a metal pad!

For the filtering circuit (electric capacitors of 10000 μF, resistors and ceramic capacitors of 0.1-0.33 μF), you can use swedish hand choose a small panel - a handy board (Figure 8).

Rice. 8. The butt of the panel with cuts for the sklotekstolit for the installation of filters and the straightener, which is to be smoothed.

For the preparation of such a panel, a straight piece of sclotextolite is needed. For the help of a self-made cut (Figure 9), prepared from a hacksaw blade for metal, we cut through the middle of the foil along the entire length, then we cut one of the parts, which came out, cut perpendicularly.

Rice. 9. Self-made cut from a hacksaw blade, made on a bench.

If we want it, then open it for details, that fastening, clean it with a thin emery paper on the surface of the middle surface, and then use additional flux and solder. We solder the details and connect them to the scheme.

Visnovok

The axis is such a clumsy block of living preparations for the possible self-contained subduing of the tightness of the sound frequency. Get rid of the addition of the soft start circuit and the smart start mode.

UPD: Yuriy Glushnev nad_slav drukovanu board for folding two stabilizers with voltage + 22V and + 12V. There are two STAB+POW circuits (Fig. 3) on LM317, 7812 microcircuits and TIP42 transistors.

Rice. 10. The board of voltage stabilizers for + 22V and + 12V was designed.

Zavantageity - (63 KB).

One more board was developed for the scheme of a regulated voltage stabilizer STAB + REG based on LM317:

Rice. 11. A board for a regulated voltage stabilizer based on the LM317 microcircuit was designed.

To go near the past, and now, to pick up some simple pidsiluvach, you don’t need to suffer with roses and rivet the cost of great roses.

Ninі mayzhe all cheap pіdsilyuvalna tekhnіka to fight on microcircuits. TDA chips are the most widely used for amplifying the audio signal. In this hour, the stinks vicorate in car radios, in active subwoofers, in home acoustics and other audio amplifiers and look approximately like this:

Advantages of TDA chips

1. In order to pick up on them, it’s enough to give them a living, turn on the dynamics and a piece of radio elements.
2. The dimensions of these microcircuits are not large, and if you need to put them on a radiator, otherwise they will get very hot.
3. The stench is sold at any radio store. On Ali, it’s expensive, like bathing vrozdrib.
4. The stench of vbudovani raznі zahistu and іnshі options, the type of inclusion of the sound is too thin. But for my warnings, it’s not good to fight the zahist, so the microcircuits often breathe either because of overheating or because of overheating. Otzzhe, bazhano not zamikat vysnovka microchip among themselves and do not overheat the microchip, vychavlyuyuchi all juices from it.
5. Price. I didn't tell the bi that they stink more expensive. For the price of the functions that are counted, there are no equals for them.

Pidsiluvach single-channel on TDA7396

Pretty simple single-channel switch on microchip TDA7396. At the time of writing the article, I took 240 rubles for the price. The datasheet on the microcircuit said that the microcircuit could see up to 45 watts in a 2 ohm voltage. If you want to reduce the opir of the coil of the speaker and the wine will be close to 2 ohms, then on the speaker you can take the peak attenuation of 45 watts.Tighten the tightness of the whole, to rule the disco in the room, not only for yourself, but for the speakers, and at the same time, take the middle sound, so, obviously, do not compare with the hi-fi speakers.

Microcircuit pinout axis:

We will choose our pilot according to the typical scheme, as the bula was added in the datasheet itself:

On the bottom 8 we give + Vs, and on the 4th bottom nothing is given. Otzhe, the scheme will look like this:

Vs - life voltage. It can be from 8 to 18 volts. “IN+” and “IN-” – a weak sound signal is given here. Up to 5 and 7 nosive speakers. I walk my leg to minus.

Axis of my choice by hanging installation

Capacitors at the input of life 100nF and 1000mkF I did not vikoristovuvav, so I have a life block, then, where the voltage is clean.

Blowing the speaker with the following parameters:

Yak bachite, opir coil 4 Ohm. Smuga frequencies to check if the subwoofer type is used.

And the axis looks like this for me at the self-made building:

Having tried to take a video, but the sound I have is worse. But I can still say that with the phone on the middle tension it already felt so bad that the ears were throaty, wanting to slow down all the circuits in a working look, it added up to 10 watts in total (multiplier 14.3 by 0.73). I took the voltage from this butt, like a car, tobto 14.4 Volts, which is fully invested in our working range from 8 to 18 Volts.

Even though you don’t have a hard core of life, you can choose an axis for this scheme.

Do not go in cycles on your own microcircuit. The circuits of the TDA chips, as I have already said, are richly visible. Deyakі z them polyuyut stereo signal and can see the sound once on 4 speakers, as it is broken in car stereos. So don't bother to surf the Internet and know the need for TDA. After the end of the folding, let your pidsiluvach sing to the speakers, turning the handle of the loudness on the whole balalaika and pushing the tight speaker to the wall).

And I chose the axis of the article on the microcircuit TDA2030A

It's even worse to go wrong, because the TDA2030A can have better characteristics, lower TDA7396

I’ll also apply, for versatility, a diagram of the type of prepayer, for which the subsidiaries on the TDA 1557Q work correctly already over 10 years ago:

Pіdsilyuvachі on Aliexpress

On Ali, I also knew the kit for TDA. For example, the axis of this stereo power supply is 15 watts per channel for a price of $1. Hang out as tight as you can, to hang out with your favorite tracks in the cinema

You can buy.

And from Vіn is already ready

That and vzagali, tsikh modules pіdsilyuvachіv on Aliekpres is too rich. Push on tse posilannya and choose whether you are a pidsiluvach, which you are worthy of.

Sound frequency substation (UZCH) or low frequency substation (ULF) is one of the widest electronic devices. All we take into account is the sound information, the vicorist of the other variety of ULF. Not everyone knows, but low-frequency power lines are also used in vitro repair, flaw detection, automation, telemechanics, analog counting technology and other electronics closets.

Wanting, obviously, the main focus of the ULF is to convey to our ears a sound signal for the help of acoustic systems, which transform the electric sound into acoustic ones. І zrobiti tse pіdsilyuvach maє as accurately as possible. Only in this way we take those satisfaction, like bringing us the love of music, the sounds of that language.

Z appeared in 1877. Thomas Edison's phonograph until now, at the time, that engineer fought to improve the main parameters of the ULF: we were ahead for the reliability of the transmission of sound signals, as well as for better characteristics, so tightness, rosemary, ease of preparation, improved soundness.

Beginning in the 1920s, a letter was formed to classify the classes of electronic subsidiaries, as a victorious dossier. Classes of subsidiaries are controlled by the modes of robots and active electronic devices that get stuck in them. electronic lamps, transistors, etc. The main "single-letter" classes are A, B, C, D, E, F, G, H. The letters of the designation of the classes can be changed at different times of the current modes. Classification is not a standard, so retailers and virobniks can score enough letters.

A special place in the classification belongs to class D. Active elements of the exit ULF cascade class D is used in the key (impulse) mode, for the control of other classes, where the linear mode of the robotic active elements is more important.

One of the main advantages of class D subdivision is the coeficient of coris dії (KKD), which is close to 100%. Tse, zokrema, cause to a change in sweating, which is increased by the active elements of the booster, and, as a result, a change in the change of the booster for the change in the change of the radiator. So podsiluvachі show significantly less vimogi to the point of being alive, like you can be unipolar and impulsive. Another advantage can be taken into account the possibility of stowing in class D substation digital methods of signal processing and digital signal processing by their functions - even digital technologies themselves are more important than modern electronics.

To improve these trends, Meister Keith promotes wide choice of sub-classD, Selected on the same chip TPA3116D2, but may differ in recognition and severity. And in order that the buyers did not spend an hour on the jokes of the vodpovidny dzherel of life, we prepared pіdsiluvach kit + living block, which optimally fits one to one.

At whom we look around, we can see three such sets:

1. (Pidsilyuvach woofer D-class 2x50W + dzherelo zhivlennya 24V / 100W / 4.5A);
2. (bass subwoofer for D-class 2x100W + power supply 24V / 200W / 8.8A);
3. (Pidsilyuvach woofer D-class 1x150W + power supply 24V / 200W / 8.8A).

First set appointments, first for everything for those who need minimal sound, stereo sound and a classic control scheme at the same time on two channels: high, low and high frequencies. Vin includes i .

The dual-channel switch itself can be unprecedentedly small in size: only 60 x 31 x 13 mm, not including the knobs of the regulators. Rozmіri living block 129 x 97 x 30 mm, vaga - close to 340 g.

Irrespective of small sizes, power supply is 4 ohms 50 watts per channel at a voltage of 21 volts!

The RC4508 microcircuit is installed as a forward switch - a subspecialization of the operating switch for audio signals. Vіn allows you to ideally accommodate the input of pidsiluvach іz dzherelom signal, may be very low non-linear and equal noise.

The input signal is fed to a three-contact rose with a contact size of 2.54 mm;

A small heat sink is installed on the TPA3116 microcircuit behind the additional heat-conducting glue, the area of ​​expansion of which can be wound at maximum tension.

We give your respect to those who, with the help of the economy of the month, and the change in the number of hours of life for the life of the day are defended due to the wrong polarity of the connection to the life of the life (reversal of the polarity), so be respectful of the hour of the supply of life to the life of the life.

From the improvement of small differences, the effectiveness of the scope of the set is even wider - from the point of replacing the old pidsiluvacha, it’s in harmony, to the size of a mobile sound-puffing kit for scoring the sunset or the evening.

The butt of vikoristannya of such a pidsiluvach was induced.

On the board, open for fastening, but for whom you can successfully win the potentiometer, which can be fastened with a nut.

Other kit includes on two microcircuits TPA3116D2, the skin of which is included in the bridge mode and provides up to 100 W of output pressure per channel, as well as with an output voltage of 24 volts and an output of 200 W.

For the help of such a set and two 100-watt acoustic systems, you can sound a solid start to pose for the guests!

Pidsilyuvach may have a thickness regulator with vimikachem. An exhausted Schottky diode is installed on the board for protection against polarity reversal to the life block.

The substation is provided with efficient low-frequency filters, installed according to the recommendations of the TPA3116 microchip builder, to ensure a high level of output signal clarity with it.

The voltage of life and acoustic systems are connected behind the help of screw roses.

The input signal can either be fed to a three-contact socket with a 2.54 mm cap, or for an additional standard audio socket type Jack 3.5 mm.

The radiator ensures sufficient cooling of both microcircuits and presses against the temperature drop with a screw, rotting from the lower part of the ironed board.

For the sake of transparency, the board also has a green light illuminator, which signals about the inclusion of life.

Razmіri pay, with fixing condensers and without fixing the handles of the potentiometer to become 105 x 65 x 24 mm, between fixing openings - 98.6 and 58.8 mm. Rozmіri living block 215 x 115 x 30 mm, weight is about 660 g.

Third set is a l and output voltage of 24 volts and a voltage of 200 watts.

The ventilator provides up to 150 watts of external tension at 4 ohm input. The main focus of this subwoofer is the need for an acidic and energy-efficient subwoofer.

Paired with other specialty subwoofer subwoofers, the MP3116btl manages low-frequency speakers to reach a large diameter. This is confirmed by the opinions of the buyers of this ULF. The sound of going out is rich and yaskravy.

Radiator, which occupies most of the area of ​​the other board, ensures efficient cooling TPA3116.

To accommodate the input signal, the NE5532 microcircuit, a two-channel low-noise specialization operating amplifier, was installed at the input of the power supply unit. Vіn mіnіmalnі mіnіmalіnіnіyni spolozhennya that smugu smugu prostranslennya.

At the entrance, there is also a regulator of the amplitude of the input signal with a slot for twisting. With this help, you can adjust the volume of the subwoofer under the volume of the main channels.

For protection against polarity reversal, a Schottky diode is installed on the board.

Lively and acoustic systems are connected for the help of twin roses.

Rozmіri pay pіdsilyuvacha 73 х 77 х 16 mm, vіdstanі between fastening openings - 69.4 і 57.2 mm. Rozmіri living block 215 x 115 x 30 mm, weight is about 660 g.

Before all kits are included MEAN WELL company's pulse generator.

Founded in 1982, the company is a purveyor of impulse sources of life in the world. Currently, MEAN WELL Corporation is building five financially independent partner companies in Taiwan, China, the USA and Europe.

MEAN WELL products are characterized by high viscosity, low water volume and a 3-year service life.

The pulses of the lifeline, divided on a modern elemental base, satisfy the most powerful forces, as the strength of the external constant stresses and winds up in the sizable linear cords with a small wave and a high KKD, as well as on the shortness of the shortness of the windfall.

Dzherela zhivlennya LRS-100-24 and LRS-200-24, which are found in the presented kits, have a light indicator of the inclusion and a potentiometer for precise regulation of the output voltage. Before connecting the power supply, turn the voltage off, and if necessary, set the yogo line to 24 volts behind the auxiliary potentiometer.

At stagnant dzherelah vikoristovuetsya passive cooling, so the stench is noiseless.

It is necessary to note that all the considered sounds can be successfully designed for the design of sound systems for cars, motorcycles and bicycles. When alive under a voltage of 12 volts, the exhaustion will be less, but the sound does not suffer, and the high CCD allows you to effectively live the ULF in autonomous living cells.

Also, we respect your respect for those who are all looked at in your eyes, you can get it right at the warehouse of other kits on the site.

If we talk about subduing the sound, we immediately notice the strain on the construction of tens of volts and some styles and amperes. Ale, there are situations, if it is necessary to reduce the life of the battery to the minimum possible value, it is necessary to burn it down to one finger battery. You can also use such a VLF, mobile phone or other similar extension with low-voltage living. It is given and є transformerless low-frequency power supply, which works in the form of one galvanic element 1.5V. Often in such vicarious moods there is a transformer output cascade, which allows you to take a greater output tension. Ale in the courtyard of the 21st century, that will do without any transformers.

Pіdsilyuvach, scho proponuєtsya, razrahovaniya on the robot when living in the range of 0.9-3V on 8 ohm support support. Obviously, the intensity of the wave is close to 50 mW, but in rich fluctuations and the most vista.

The principle diagram of a low-voltage power supply is shown in a small picture. For verification of practicality, ULF is selected on the breadboard.

ULF is folded from the input stage on transistors BC547 and the folded output stage on transistors BC557, BC547. Installing a stream of calm output cascade to pass through the auxiliary resistor of the base lance of the input transistor - 220k. Yogo change makes the strum calm, change - change.

In this case, it is possible to zastosuvat be-yak low-power silicon transistors, depending on the conductivity, including KT315-KT361.

Ale, for the maximum reduction in the voltage, it is necessary to zastosuvaty germany, with a small pressure drop. For example vіtchiznіnі transistors series MP and similar imported ones.

Experiments with different eating habits of this pilot have shown that you can save food for 0.85 volts! On the ULF scheme, there is a microphone input, so it is also necessary to send a signal from a lower sound level - we put a new loudness control instead. For testing up to ULF, a dynamic head of 1 watt was connected. The walls didn’t tremble, but you could still hear the music :)

Discuss the statute of the LIFE OF THE PIDSILYUVACH