This low frequency oscillator circuit was found in an Electronic Design from the 90s. The transistors are common types, and the frequency is given by the crystal.
We found this circuit in a Radio Electronics from May 1966. Its purpose is to generate pulses...
This transmitter emits signals in the FM range, reaching a few meters away. The modulation...
This circuit allows 220 / 240V shavers to be used in the 110V network. The diodes can be general...