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*** Important Update:
While I was breadboarding this circuit i quickly realized that, while this circuit does work at least for lower supply voltages, the high dependency of relying only adjusting voltage levels with fixed resistances at the base actually causes a lot of problems that can cause things to over heat if you drive the bases too high when using higher supply voltages for example. So i plan to make a much more reliable version that is entirely current based control where it will no longer be influenced by the voltage supply your using, because all of the base currents will be regulated, and therefore independent of supply voltage, to an extent of course, (because too high, even at a fixed current, and the power will also increase enough to cause substantial damage). ***
This circuit features very fast High Current Protection, that can trip precisely within nanoseconds.
In the simulation, the circuit starts out tripped, just press the push button to latch on, then it will latch off when the current through the green resistor reaches about 15 amps.
It’s also very efficient, due to the fact that it functions this well with incredibly low shunt resistance, and therefore hardly wastes any power at all. Also, the high current does not flow through any of the sensory circuitry, it only draws around a few mA. The circuit trips when the current threshold is reached and can be reset with a simple push-button switch. The current is variable via a control voltage (shown in orange). Possibly a digital control modification coming soon!
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