DC to DC Converter 12V to ± 38V

car amplifier power supply

The core of the Car DC to DC Converter 12V to ± 38 VDC is a pulse generator built on the TL494 chip. The circuit is designed to provide power supply to Monoblock Car Amplifier TDA7294. Generator frequency can be changed by varying the resistor R3. Optionally, you can download the datasheet and find out more details on chips.

All resistors (except R4, R9, R10) is 0.25 W, you can even enggunakan 0.125 Watt, R9, R10 – 2W, R4 – you can use an 1W (or 0.5 W). Diode VD1 is placed at the entrance to protect against reverse polarity, is eliminated. Choke L1 in my case, wound on a ferrite ring with a diameter of about 2 cm from the computer power supply. It contains 10 turns double wire 0.8 mm in diameter that are distributed around the ring. This reactor can also be wound on a ferrite rod diameter 8-10mm and a length of 2-3cm. Probably the most difficult in the converter is the correct construction of the transformer, because it is very dependent on the ability of the unit overall. For sample in this Car DC to DC Converter 12 V to ±38 V project transformer wound on a ferrite ring marked 2000 NM size 40 * 25 * 11.

Power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another and, as a result, power supplies are sometimes referred to as electric power converters. Some power supplies are discrete, stand-alone devices, whereas others are built into larger devices along with their loads. Examples of the latter include power supplies found in desktop computers and consumer electronics devices.


Tags: 12 to +-40vdc car amplifier power supply Car DC to DC Converter dc converter circuit Monoblock Car Amplifier power supply TDA7294 circuit TL494 circuit

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  1. author

    chambouleyron4 years ago

    bonjour tout l’équipe.
    pouvez-me dire si ça existe sur le schéma
    du convertisseur 12V-40Vdc avec le circuit intégré
    NE555 et une forte puissance sur 40Vdc-30Ampères
    +équipé sur Mosfets .
    merci cordialement philou…..

  2. author

    Benjamin4 years ago

    Very interesting power supply I need it to make something like that.
    I will apreciate so much if you can send me how to can make the ferrite transformer
    Thank you in advance for your consideration
    Best Regards
    Benjamin

  3. author

    Rizwan2 years ago

    How to control the current of supply on out put ?

  4. author

    geeweezy2 years ago

    i want to get a psu charger that can charge a 19v laptop with integrated circuit lm555, please reply me.

  5. author

    Reynaldo tiongson2 years ago

    Hi, i’m rey tiongson. Can you show me a diagram of a 7.4v to 5v dc converter?

  6. author

    abbang hari2 years ago

    gooooodd power supply