This traditional crystal oscillator configuration can use any CMOS gate configured as an inverter. R1 has values from 1 to 5 M ohm and R values around 10 k.
The circuit shown in the figure can be used to detect the operation of infrared sources whose...
Found in a 90s Hands On Electronics, this small preamp finds applications like microphones and other...
This circuit was found in a 90s Popular Electronics. The frequency is determined by R3 and C1 that...