This circuit is from a 1980's documentation for telecommunications. The circuit is used in SSB and the diodes must be suitable types for the application. The audio input is low impedance.
This circuit is a kind of Hertz Loop that can be used to check the operation of transmitters and...
This circuit is from the 80's, making use of components of the time. What the circuit does is...
November 2016 - The TL3780 ultra-miniature E-switch touch switches can now be obtained from Mouser...