This circuit makes use of a 741 single source operational amplifier to measure resistors on a linear scale. The circuit may use as an indicator a common multimeter on a low current range.
Using an operational amplifier, this circuit from a 90s Popular Electronics, is characterized by its high...
This circuit was found in a 1999 British magazine (ETI). It is a device that receives the signal...
We found this circuit in a 1975 radio amateur documentation. The circuit uses TTL technology and...