Im looking to build a regulator for a power supply currently kicking out around 20v DC with no load. Im aiming for between 12 - 14.5v. This design caught my eye:
(Apologies for size the resize doesnt seem to be working)
The application is for running car amplifiers through UK wall power. A 450Wrms 12-14v amplifier technically shouldnt draw more than 40A, but it would be good to have room to expand, say for example 70 - 100A using low gauge wire.
Without a regulator the supply sits on 15.2V with the amp powered on for the first 10 mins and creeps up to 16.1V which causes the amp to shut off. When i have the amp playing at good volumes ive seen drops down to 11.3V (due to insufficient transformer which is getting upgraded).
My question is: Would the above design (perhaps with a few more 2N3055s) work well to regulate the 16/20V down to 12/14V for currents above 40A?
Thanks for any advice.
Sam
(Apologies for size the resize doesnt seem to be working)
The application is for running car amplifiers through UK wall power. A 450Wrms 12-14v amplifier technically shouldnt draw more than 40A, but it would be good to have room to expand, say for example 70 - 100A using low gauge wire.
Without a regulator the supply sits on 15.2V with the amp powered on for the first 10 mins and creeps up to 16.1V which causes the amp to shut off. When i have the amp playing at good volumes ive seen drops down to 11.3V (due to insufficient transformer which is getting upgraded).
My question is: Would the above design (perhaps with a few more 2N3055s) work well to regulate the 16/20V down to 12/14V for currents above 40A?
Thanks for any advice.
Sam