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, already explored in other articles on this site, consists of a sequential timer in...
Figure 1 shows a simple audio oscillator driven by the SCR When the sensor is closed. The circuit...
This application shows you how to make use of the static RAM 2114 of 1 k. The supply is made with...