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[SOLVED] Power Electronic Devices for both AC and DC loads!?

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nanosmart

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What is the best choice for fast switch-off in both AC and DC loads?

Conditions:
1-I want to design voltage and current protector circuit.
2-I prefer not to use the relay or ssr.
3-The load might work in both DC or AC.
4-The MAX RMS current is 10A.
5-The MAX RMS voltage is 400V.
6-The combination use of Power Electronic Devices is fine.
 

Hi,

* define "fast". Is it ms, us, ns?
* isolated or not
* inductive loads
* functional switch OFF, or safety switch OFF
* AC = mains frequency?

Is it to protect the load, or your electronics?
If AC, and RMS current.... how do you measure RMS current that fast? Or don't you use RMS to decide when to switch OFF?

Klaus
 

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