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Here, I present a circuit that supplies a current greater than what a power supply is capable of.
THEORY:
The 5V power supply to the left represents the main supply where we are supposed to source a current. However, due to its internal resistance being 1Ohm , the most it can supply is only 5A.
We want to supply 10A (or more) to a load (Zener) even for a short period of time (pulse).
In order to do this with only a 5A rated supply, I use capacitor banks.
The capacitor banks are initially charged to the voltage of the power source.
Once the switch is closed, all of these capacitors act as temporary power supplies, and supply current to the load together with the 5V supply. Their combined currents can reach more than 5A.
The combined measured current through the 1mOhm sense resistor will be much greater than the current through the 1Ohm internal resistance of the supply.
HOW TO USE:
Close the SPDT switch just near the Cap Banks. Reset by opening said switch, then unlatching the SCRs by triggering the PBNC.
Set the peak current by changing the value of the voltage source at the comparator; 1V:1A.
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