Your circuit is a type of "crowbar". The circuit is named afte the crowbar which is a large steel claw-like tool for breaking and prying things apart. And, in context, "dropping a crowbar across that power supply will certainly blow that fuse."I have these work instructions
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I have that circuit. When I apply 10V to A1 and A3. My DMM reads 1.3V right away.
I think my circuit is already shorted somewhere but I don't know where to start.
If my fuse is out (F1), I should read 10V.
can someone sugguest some ideas to troubleshoot on why?
Thanks
To turn it off, drop the gate voltage to ground AND remove stop current flow from anode to cathode."Also, SCRs are used in crowbars because they can handle a large amp load (to immediatly pop the fuse) and once they are turned on, they don't turn off until the supply voltage is cut (or the fuse pops).
Hi,
So yes, the fuse is bad and I replaced it with a new one.
I am trying to find out if the SCRs are bad or not.
it was mentioned that if the SCRs are turned on, how do I turn it off?
I am not cleared on that
It's not a normal diode and it won't work properly with a normal diode in that place.Hi,
Why your CR1(3322941) is look like an SCR too. Replaced it a normal diode.
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