This is one of the channels of an amplifier suggested by Westinghouse in 1970s documentation. The circuit uses components from the era and no information about the transformer is given.
This circuit is from a Hands-On Electronics from the 90s. The integrated amplifiers used are well...
This circuit was found in a Popular Electronics of 1993. The operational amplifiers can be the...
We found this circuit in the 1972 RCA Linear Integrated Circuits Manual. The circuit can generate...