As the title says I want to know your views on this: I have a receiver which requires 220 volts DC HT for the valve anodes and 12.6 volts DC for the heaters from a seperate PSU at the moment I have it run via a variac fed from an isolation TX the unfortunate thing is its audio output is a bit on the low side so I want to run it through an audio amplifier the thing is the amp has the mains neutral straight to chassis and one side of AF input also to the chassis so if I link the 2 beasts together my receiver RF Earth will also be taking the amps chassis to earth I could run it all from the isolation TX do you think that's the best option?
Hi all bit of a disaster here at Kelly towers I plugged my little receiver into the valve amp I had then plugged the amp and receivers 2 power supply's into my isolation TX switched on the amp and the receiver valve heaters all ok switched on the HT and fizz BANG the power supply for the heaters billowed out thick brown smoke accompanied by some sparks so I switched off bloody quick. I checked all my wiring could find nothing wrong so substituted a different heater supply as the old one was now fried carefully switched on and would you believe it the same thing again ANOTHER little PSU is now defunct. I don't understand what went wrong other than it being typical of my sort of luck. None of the mains earths on any of the gear were connected to anything just live and neutral the only earth was the RF Earth from the receiver remember all items were supplied via an isolation TX I really would appreciate your opinions on what went wrong other than me having crossed 13 black cats at some point
Hi all bit of a disaster here at Kelly towers I plugged my little receiver into the valve amp I had then plugged the amp and receivers 2 power supply's into my isolation TX switched on the amp and the receiver valve heaters all ok switched on the HT and fizz BANG the power supply for the heaters billowed out thick brown smoke accompanied by some sparks so I switched off bloody quick. I checked all my wiring could find nothing wrong so substituted a different heater supply as the old one was now fried carefully switched on and would you believe it the same thing again ANOTHER little PSU is now defunct. I don't understand what went wrong other than it being typical of my sort of luck. None of the mains earths on any of the gear were connected to anything just live and neutral the only earth was the RF Earth from the receiver remember all items were supplied via an isolation TX I really would appreciate your opinions on what went wrong other than me having crossed 13 black cats at some point
