This Vox circuit uses a specific Motorola component. We found the circuit in the 1990 Linear Databook of the same company. The transistor must be in accordance with the switched load.
This simple version of a function generator with the XR2206 was found in the May 1977 issue of...
This circuit is from an English magazine from 1980, but it can be easily assembled with more...
This circuit was found in a 2005 Linear Technology sensor manual. The circuit can function as a shield...