The presented circuit measures currents and voltages with precision that depends on the tolerance of the resistors used. The instrument is a microammeter and more scales can be added.
The circuit is from National Semiconductor's Linear Applications Handbook. The operational...
This circuit is old, causing LEDs to be lit sequentially. Several types of games can be programmed using...
This circuit of the 70's uses transistors of the time. The circuit can amplify signals from 10 Hz...