This circuit can be used in measurement bridges. We found it in the September 1995 Electronics Now magazine. The meter can be from 50 uA to 1 mA and the power supply is simple.
jkjjjjj Used to measure night light for the purpose of adjusting camera exposure time, this...
This rev counter, which can be used in a car or engine, was found in a French magazine Radio Plans...
This circuit was originally created to increase the power of car radios of the 790s and 80s that...