This circuit indicates a digital value through a moving bar. The circuit is TTL and must be powered by 5 V. We find this circuit in a Texas Instruments optoelectronics manual.
This circuit was found in an 1888 publication. However, since it uses common components, it can...
The input impedance of this circuit is about 700 k ohm and the output impedance is about 1 k ohm....
This circuit appeared in the 1991 Electronics Experimenter Handbook. The circuit is for remote...