This receiver was found in a Popular Electronics from the 90's. Its different configuration shows a tuning circuit after the tube that works as an aperiodic amplifier. Observe supply voltages.
Using 5 V relays, this circuit can be used as a control shield for microcontrollers. The circuit uses...
This circuit was obtained in Linear Technology documentation from 1993. The circuit provides 3.3 V and...
This oscillator that excites 3 LEDs sequentially is also called a circle oscillator. The frequency...