Hi folks.
I'd like to build a universal power supply for our "usual suspects" class A power amps, bipolar 23 volts with 1.5-2A bias.
I'd like to go the CLC route, and for space saving, shared rails (so ~4A per rail).
I already have an 800VA Toroidy with two 18v secondaries, two Triad C-59U chokes (10 mH, .1 Ohm, 12.5A), and I have nice but gargantuan Rifa 33000µf/63V caps in abundance (more than what's fitting in an enclosure).
I think I have gathered some hints here and there for PSU builds, but I'm not very confident.
So summing up all answers here sounds necessary.
- Rectification
I'm considering MOSFET rectification, using Saligny power.
But for such a "vintage" style PS, is the cost over standard diode bridge with snubber circuit worth it (mains harmonic, duty put on first cap and transformer secondaries)?
- Capacitor selection
The first cap after rectification has to be low ESR, and high ripple current capacity.
How important it is in my situation?
-Capacitor placement
Considering the size of my Rifa, I was wondering if there's an interest to locate the two last cap inside the amp itself, so CL in one box, and C in the other one?
I can imgine the benefit of the last cap being close to the load, but what about the drawbacks?
- Connector
How woud you terminate the interconnects, Speakon? LEMO?
I'd like to build a universal power supply for our "usual suspects" class A power amps, bipolar 23 volts with 1.5-2A bias.
I'd like to go the CLC route, and for space saving, shared rails (so ~4A per rail).
I already have an 800VA Toroidy with two 18v secondaries, two Triad C-59U chokes (10 mH, .1 Ohm, 12.5A), and I have nice but gargantuan Rifa 33000µf/63V caps in abundance (more than what's fitting in an enclosure).
I think I have gathered some hints here and there for PSU builds, but I'm not very confident.
So summing up all answers here sounds necessary.
- Rectification
I'm considering MOSFET rectification, using Saligny power.
But for such a "vintage" style PS, is the cost over standard diode bridge with snubber circuit worth it (mains harmonic, duty put on first cap and transformer secondaries)?
- Capacitor selection
The first cap after rectification has to be low ESR, and high ripple current capacity.
How important it is in my situation?
-Capacitor placement
Considering the size of my Rifa, I was wondering if there's an interest to locate the two last cap inside the amp itself, so CL in one box, and C in the other one?
I can imgine the benefit of the last cap being close to the load, but what about the drawbacks?
- Connector
How woud you terminate the interconnects, Speakon? LEMO?