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Old 21st March 2005, 09:56 PM   #1
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Default amp suggestion or tips

i have recently salvaged a transformer that has secondaries of 32-0-32 and also 9-0-9 volts i was thinking of an amp like a simple stereo chipamp like the lm4780 for the 32-0-32 volts and something like a tone level control type thing for the 9-0-9 volts. does anybody think this would work out well or does anybody have any better suggestions or any tips? i havent measured the amperage the tranny puts out yet but i will get too that i might say it is a beast tho it is huge. i am planning on using 2 6800uf caps in parallel with the trannys 32-0-32 secondaries to stabilize the voltage.
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Old 21st March 2005, 10:11 PM   #2
DC Dave is offline DC Dave  United States
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That transformer's voltage rating might be too high for the lm4780 or any National chip for that matter. After rectification you are looking at over +/- 42 volts which is the maximum voltage for this chip. I don't know if any of the National chips can handle that voltage. Before you proceed you might want to wait until someone says they had success running a powersupply with that voltage, otherwise you might Smoke some chips.
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Old 21st March 2005, 10:23 PM   #3
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haha thanx for the point i didnt check that what would anybody think about this idea: i have 4 opa549s and 2 opa541's... any ideas? would it be good idea to put the 4 opa549s together in a bridge/parallel config?
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Old 23rd March 2005, 05:51 AM   #4
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OPA549=60 Volts max
OPA541=80 Volts max
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