This commercial transistor tester circuit (EICO 666) is from a Japanese publication from the 1960s. The switch selects the types of test with the switching of the terminals and the gain ranges.
With the presented circuit it is possible to measure resistances of many megohms using a low...
This high input impedance circuit is suggested by Motorola's 1993 Linear Interface ICs. The power...
This variation circuit with the L121 A was found in the SGS manual of integrated circuits of 1982....