This is yet another balanced modulator circuit for SSB transmission. This two-diode circuit was found in a 1980s documentation. The diodes are commonly used.
This circuit can turn-on (only) a load (relay or lamp) when S1 is pressed. The circuit can be used as...
We found this filter in the 1990 Motorola Linear Databook, but it can be implemented with other...
This 1969 Philips documentation circuit makes it possible to control an engine through the sound...