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.
This integrated circuit is recommended as a standard amplifier in sound equipment, TV sets,...
This circuit is from a 1975 Miniwatts magazine, therefore using Philips components from that time,...
We found this circuit in a 1995 publication. It makes use of infrared LEDs of the type existing at...