250W Car Amplifier Project SG3525 DC to DC Converter Circuit

| September 6, 2024 Updated
250W Car Amplifier Project SG3525 DC to DC Converter Circuit

A nice project implemented and shared by our member named H@S@N on the forum is a tested project, so it would be good to share it on the blog.

The car amplifier consists of 3 parts SG3525 (ka3525, kia3525, uc3525 are the same) smps circuit based on pwm control (EI35 Transformer) BJT Transistor amplifier circuit and original JBL filter circuit, thanks to my brother H@S@N for sharing, the following explanations belong to him.

boll

Hello masters. I would like to present to you the car amplifier circuit I made upon the request of a friend.

It has a 250 watt rms amplifier + smps + jbl filter. I used EI-35 instead of EI-33.. Connect the zener diode in the smps section to the maximum voltage you want. I also have a 75 volt zener diode. I got +75 / -75 volt voltage..

The coolers on it are for testing purposes… I tested the amplifier at 2 ohms. When I hit the bass, the power supply made a sound like welding 🙂 The gain of the jbl filter is very good. The circuit worked the first time without any problems.

smps-kutulu-sogutucu-sg-3525-amp-bjt-transistor-jbl-filter

smps-besleme-devresi-smps-trafo-pcb-diy-amp-oto-amfi

ei35-smps-sg3525-pwm-ka3525-car-amplifier-power-amp

car-smps-pcb-ei35-atx-trafo-amp-power-120x120 jbl-filter-pot-smps-audio-120x120 smps-amfi-test-120x120 smps-test-1-120x120 smps-final-120x120

Project Proteus ares of the pcb:

250W Car Amplifier Project SG3525 DC to DC Converter Circuit

Password: 320volt.com

Published: 2011/04/12 Tags: , , ,



1 Comment “250W Car Amplifier Project SG3525 DC to DC Converter Circuit

  1. Electronics CircuitsElectronics Circuits

    Subwoofer Filter 25Hz 250Hz Bass Crossover Circuit

    Circuit quality quite a crossover frequencies between 250Hz 25Hz circuit board on the opamp 4558 setting can be made. Proteus ares of project drawings are printed circuit boards. Subwoofer Crossover @ ahmedyerli of circuit and PCB design

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