We found this Vox in a 1969 Motorola documentation. Transistors support modern equivalents and the SCR can be a TIC106. The reset is done by a push button.
Using the 4001 integrated circuit, this latching relay can employ any general-purpose transistor. The...
Suggested by a 90s Electronic Design, this circuit drains only 0.25 mA from its source. Listening...
The frequency of this oscillator depends on the amount of light incident on the LDR. The circuit,...