12 Volt 30 Amp PSU


Posted on Nov 4, 2012

Using a single 7812 IC voltage regulator and multiple outboard pass transistors, this power supply can deliver output load currents of up to 30 amps. The input transformer is likely to be the most expensive part of the entire project. As an alternative, a couple of 12 Volt car batteries could be used. The input voltage to the regulator must be at least several volts higher than the output voltage (12V) so that the regulator can maintain its output. If a transformer is used, then the rectifier diodes must be capable of passing a very high peak forward current, typically 100amps or more.


12 Volt 30 Amp PSU
Click here to download the full size of the above Circuit.

The 7812 IC will only pass 1 amp or less of the output current, the remainder being supplied by the outboard pass transistors. As the circuit is designed to handle loads of up to 30 amps, then six TIP2955 are wired in parallel to meet this demand. The dis




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

amplitude modulator
Summing-amplifier-clamping-circuit
Autonomous Parallel Parking RC Car
High voltage direct current
MAX786 TEA5711T Application Circuit
Amp RC
Sensor
ADUC841 20MIPS 8052 Flash MCU + 8-Ch 12-Bit ADC + Dual 12-Bit DAC
Temperature Sensor Circuit
Construction 25W single-ended Class A tube amp circuit diagram EL156
LM4561 LM4562 consisting of 170W power amplifier circuit



Top