Build a Reusable 12V Short‑Circuit Protection Circuit (No Fuse!) ⚡
Stop wasting fuses – this smart circuit does the job and resets with a button push. When the load shorts, the MOSFET + optocoupler latch instantly cut off power. Press the reset switch and you're back in business. Build it with just 9 components: IRFZ44N, PC817, resistors, and two tactile switches. Perfect for 12V systems – add a heatsink for high‑current loads. Schematics included.
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