It will prevent the speaker from too over high power output may speaker damaged it use transistor and relay cut off as safe.
If you are building a normally OCL power amplifier. You will hear sound "tlub.." on your speaker. That is not good for your expensive speaker. Also, You also feel annoyed…
This is overload protection for transformers and load, is simple circuit cut off-on by relay. And so fast switch witch SCR driver. can set sensitive by VR1
Buffer circuits for digital CMOS If you want the circuit Output buffer for the circuit digital. I suggest the IC-4050 (Hex buffers with high-to-low level shifter inputs) because very be…
These are over voltage and low voltage protection circuits, first is simple use LM324 and relay, second is LM393, timer delay IC. both to protect any load. [...]
This is a motor protection circuit. It will protect the AC motor burn out because under voltage input. The principle is simple, it will check for voltage at all times. Normal voltage is 220V AC. If the voltage falls below a preset. Relay will not work and the LED is a warning.