Found in a Popular Electronics from the 80's, this circuit makes use of a time integrated to control a relay in a timed way. R2 determines the activation time.
With the presented circuit it is possible to measure resistances of many megohms using a low...
Series and parallel regulator (CB8814E) The two voltage regulator configurations are combined in...
This circuit was found in the power semiconductor manual of the 1980s ON Semiconductor. The...