This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for Numitron indicator valves used at the time.
This circuit has the function of observing the characteristic curve of a transistor on the...
This voltage regulator circuit uses only transistors and can provide a maximum output current of...
The pair of transistors matched in a single LM114 enclosure is not a common component today. The...