This Vox circuit uses a specific Motorola component. We found the circuit in the 1990 Linear Databook of the same company. The transistor must be in accordance with the switched load.
This is perhaps one of the first capacitive discharge ignition circuits published in a magazine. It...
This circuit was found in old American documentation. It has 40 dB gain between 10 Hz and 10 kHz....
This simple alarm for doors and windows was found in a Japanese publication from the 1960s. The...