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 May 1996 Electronics Now magazine. The relay must have a voltage...
The shield circuit shown is from the 1994 Linear Applications Handbook by National Semiconductor of 1994....
Up to 0.5 A DC motors can be controlled by this circuit. Direction change is achieved by a logic...