Suggested by Motorola in 1968 documentation, this circuit has an efficiency of 70%. Power transistors are types of the time as are transformers.
The circuit shown bellow is gated by an external signal. A high logic level applied to the input...
We found this simple undervoltage indicator circuit in a 1992 publication. The circuit triggers an LED...
This meter has a 0.001% tolerance and was found in an old American publication. The circuit has a...