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Hoffman Amps Forum image Author Topic: Does an arrangement of PS like this give galvanic isolation to the circuit ?  (Read 1836 times)

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Offline kagliostro

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To me seems that as the heater of the rectifier is feed via a galvanic insulated winding the circuit result to be galvanically isolated but only partially because if plate and cathode of the rectifier shorts the circuit will be directly connected to the line

(so I think this configuration is unsafe)

Your opinion ?

Thanks

Franco

p.s.: Obviously if not preceded by an insolation transformer ad suggested on the schematic
« Last Edit: December 25, 2023, 05:23:24 am by kagliostro »
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Offline sluckey

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The circuit is ALWAYS connected to the line! The only danger from a shorted rectifier is to the filter caps.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline kagliostro

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Thanks Steve

Franco
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Offline PRR

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That drawing is incomplete. Electricity comes off the power line, through the rectifier, to filter caps and to tubes, and then.... where?? A ground symbol? But we know the power company gets ALL their electrons back. So we must assume the ground symbols *also* return to the power company. They usually do, for general safety against lightning and leaks.

However "isolé du réseau" means "isolated site". If that is true, the electrons never come back. It won't work at all.

Offline kagliostro

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It means insulated from line, I suppose using an insulation transformer and this doubles doubts about that PS


Franco
The world is a nice place if there is health and there are friends

 


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