Overvoltage Protection

Thread Starter

danielb33

Joined Aug 20, 2012
105
I have 2 phase input separated by 90 degrees. Peak = 50V, but this can very by 5% or more depending on the electronics feeding the phase (which I cannot control). I am fine with up to 55V in, but at over 55V problems will occur.
How can I prevent over 55V without regulators? Any clever simple cheap way to clip this at 55V? The cases where 55Vin occurs is slim to none, but I need to prevent it from ever happening. Thoughts?
 

#12

Joined Nov 30, 2010
18,224
More importantly, what is the impedance of the supply of the voltage? You can't easily clip a sine wave coming from a five thousand watt generator.
 
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