This circuit, to add the ambience effect, was suggested by National Semiconductor in documentation from the 90s. The amplifier needs an appropriate power source.
This circuit is from the 80's documentation. The integrated circuit is from the time but can be...
We found this circuit in a 73, magazine for radio amateurs of the 90s. The circuit is passive and...
September 2016 - It can be obtained from Mouser Electronics the new voltage regulators (LDOs) to...