Speaker protection circuit
It will prevent the speaker from too over high power output may speaker damaged it use transistor and relay cut off as safe.
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December 28, 2018
Simple delay on speaker
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…
December 27, 2018
Simple Overload protection circuits
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
June 17, 2017
Audio peak limiter circuit to improve input signal
The simple audio signal overload protection circuit. Why use it? it will protect input of power amplifier away high amplitude, more than1Vrms. Easy circuit!
May 29, 2017
13 Small digital circuit ideas for beginner
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…
May 13, 2017
over and under voltage protection circuit
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. [...]
February 14, 2017
Motor burn out and under voltage protection
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.
July 28, 2014
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