This circuit is from the 1989 special edition of Radio Electronics Experimenter. The circuit was created with SMD components to be mounted on a keychain.
Suggested by Fairchild in a 1980s publication, this multiplier uses operational amplifiers from that...
We found this circuit in an English publication from 1980. It provides a logical output signal when...
This unusual amplifier configuration is from 1986. The circuit has a high resting current given the...