We found this circuit in the November 1984 Radio Electronics magazine. The base frequency is given by C1. The power supply can be between 3 and 12 V.
We have already presented this circuit elsewhere on our website. This version of an English...
With this circuit it is possible to obtain an intermediate voltage of 6 V from a 12 V battery with...
This 9 V battery eliminator was found in Radio Electronics magazine from June 1966. The transistor is of...