This precision signal rectifier was obtained in an American technical documentation from 1975. The operational amplifiers can be 741 and the power must be supplied from a symmetrical source.
This circuit is from Mullard documentation from 1969. Transistors support current equivalents. Output...
Found in Radio Electronics from the 90s, this thermometer uses an integrated circuit that is...
This circuit is from a 90s Popular Electronics. The circuit employs a ZN461E that is not a common...