Common supply

[Paul Perry]

At 12:39 AM 20/01/99 -0800, irish at eskimo wrote:
>Crowbar circuit? 
>
The idea here is that if some fault causes the power supply unit to 
put out too much voltage (say a resistor failure somwhere) then a SCR
produces a short circuit across the output, hopefully triggering
another current limiting ckt to shut down the PSU.. it doesn't have to
be destructive.
When the SCR triggers, it looks like a crowbar, resistance wise.

paul perry melbourne australia