How effective would that circuit be at preventing a voltage spike on a car?
I was always under the impression that they used capacitors to absorb the voltage spikes then slowly discharge them but obviously not in this case at least.
Does anyone know of any makes of surge protector like the one dave describes here? I wouldn't mind spending the money on a top end unit.That would work to an extent, not certain what voltage it would start snubbing at and the copper on the board's a bit "minimal"?
Decent ones would use a lot more gubbins, probably MOVs (Metal Oxide Varistors, AKA Voltage Dependent Resistors) which have a predictable and repeatable breakdown voltage, they'd feed a capacitor(or bank of capacitors) paralleled by fairly hefty resistors to discharge the spike's energy - MOVs "reset" after the spike and look like a high resistance once below their breakdown so carry on working for the next spike (unless they're massively overloaded, but that would need an over-voltage with some current capacity behind it - can't make 'em completely idiot-proof, they keep building better idiots...)
Dave H. (the other one)
The one I opened up in the first post is the one that snap on sell.Well I have one from the snap on van, it’s not actually their name on it but they sell them. The name on it currently escapes me.
I don’t feel inclined to invalidate the warranty by prying it open to reveal the innards though.
I got it mainly for covering my backside. I bought an expensive one where it can’t be said that I bought a cheap no name device. If an electrical fault develops after I weld using this protector I can say that I did everything I should have.
Does anyone know of any makes of surge protector like the one dave describes here? I wouldn't mind spending the money on a top end unit.
If you do decide to make some I'd be interested in buying one.Maybe I should start making them...
Dave H. (the other one)
The one I opened up in the first post is the one that snap on sell.