This unijunction transistor circuit was found in Radio Electronics magazine from July 1968. The circuit operates up to approximately 100 kHz depending on C1.
This 12 V incandescent lamp switch with time delay can be found in old documentation. The SCR can...
With this circuit it is possible to control the frequency of a 555 astable, given by C1 and R1...
This conventional astable uses two NPN transistor and was found in a publication of the year 1968. The...