Why you need a reliable capacitor tester circuit
If you've ever stared at a pile of old electronics wondering if those bulging metal cans are actually dead, building a simple capacitor tester circuit is basically a rite of passage for any DIY hobbyist. Most of us start out trusting the "capacitance" setting on a cheap hardware store multimeter, but honestly, that's often like checking if a car is good just by seeing if it has four wheels. It doesn't tell you if the engine is actually going to start when things get hot. ...