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|4th June 2007, 08:23 AM||#1|
Join Date: Jul 2004
Hexfred diode bridge.
I have in a few days some extra HFA08TB60 diodes to try hexfreds in my hybrid poweramp. Had 6 lying around, ordered 2 extra.
The amp has a tubed voltage stage pio cap coupled, and good old TO-3 Hitachi k135/k50 Mosfets solid state output. It can deliver about 25 to 30 Watts. Each solid state channel has a 120VA (2X22V/2.8A) ringcore transformer, two 10000uF/50V Panasonic caps and a 15A standard diode bridge with 0.1 ohm resistors in AC line to filter some diode noise out.
I mounted (and isolated) the hexfreds on an aluminium L shaped heatsink, 30X30mm footplate.
The HFA08TB60 can deliver 8A continous, and 60A in single pulse current. I think this is possible, but to be safe i want to ask here:
Can i savely use this hexfred without being afraid of blown diodes when it's powered?
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