Settings like to this can be found elsewhere in this section. This was found in an American documentation from the 70s. The integrated parts used are from that time.
In the circuit that uses a PIC16F84, the audio present at the input will have its level controlled by...
August 2017 - STMicroelectronics' new T850 switches with triacs up to 8 A can be obtained from...
This circuit was found in an American documentation from 1969. The circuit is a multi-indicator with...