Suggested for the control of photographic enlargers, this 1967 General Electric circuit uses still common components. The circuit directly controls a lamp for exposing negatives.
This circuit doubles the input voltage, converting, for example, 6 V and 12 V. The output current is...
The LM105 integrated circuit consists of a voltage regulator integrated in a metallic enclosure. The...
The CA3020 integrated circuit was one of the first commercial types, sold in the 1960s. The...