This sensitive motion sensor with inductive sensor was found in a 90s Elektor. The circuit uses only transistors to activate a buzzer.
In this oscillator a phase shift network formed by C1, C2, C3 and R1, R3, R4 determine the fase...
Indicated for vinyl media recovery, this circuit is from the 80's, having been found in an...
An interesting application that finds applications in industry, especially when fluctuations in...