This circuit is from a 1968 publication. Here we have several types of resistive sensors with individual adjustments triggering a single SCR. Power depends on the type of sound device to be triggered.
This circuit was found in a Popular Electronics from the 80s. With it we can make a 100 W...
August 2016 - Mouser Electronics is offering the DC / DC converters from Torex Semiconductor with...
This modulator circuit was found in an American documentation from the 90's. The circuit uses a...