Simultaneous Protection & Output Failure?

[oldflame]

It has happened to me, but only once in a long time. However, it occurs often enough to read about. Perhaps the protection circuit failed first and I wasn't aware, but it still took two to tango.

Less now than when "crowbar" thyristors guarded the hen-house? What say you?

 

[GChief]

crowbar

 

[oldflame]

There's (was?) a Crow Bar in tiny Mishicot, WI. I didn't bother to Gurgle how many others exist in the USA.

 

[avionic]

Crowbar shuts down power supply.. Protect circuit just disconnects the speakers from the amplifier output. Protect circuit not designed to protect anything else.. Just the speakers.

 

[gadget73]

any time when I've had protect circuits engage, it was because something in the output state went pear-shaped and it was trying to dump rail voltage to the speakers.