This configuration was found in an English magazine from 1965. It is valid for any junction FET. The input impedance is 5.5 M ohm higher than conventional stages.
This circuit was found in the September 1971 Radio Electronics magazine. The buzzer can be...
In this circuit of a 1968 publication the unijunction may be 2N2646 and the transistor BC548. The...
This circuit generates control signals for stepper motors. We found it in a 90s Popular...