This circuit for voltmeter has an output of 1 V for 100 uA having been suggested by American publication of 1969. The transistors are general purpose types.
We found this circuit in the April 1975 Radio Electronics magazine. The circuit has a latch and...
We found this sophisticated home alarm in a 1994 documentation. The circuit supports sensors of...
This circuit was found in the 1991 Electronics Experimenter's Handbook. It activates a relay when...