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I recently published another one of these, but I noticed that sudden voltage sags in the power supply, followed by voltage rise leads to higher than optimal current spikes. This is caused by the saturated MOSFET, and the inability of the delay capacitor to discharge immediately after a voltage sag. As such, the output voltage begins to decrease during a voltage sag, the transistor remains saturated, and a sudden voltage rise charges the 220uF capacitor with little to no resistance in the pathway. As such, I added an absolute current limiter, that would cut any spikes higher than 8A. Other safety functionalities and limitations remain as the previous version. You can simulate a sag/spike by opening the switch in the middle. Wait till the output discharges to let's say 150V and close the switch.
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