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 90s Popular Electronics. The integrated circuit is from that time. The...
The resistors R1 and R2 consist of 8 220 ohms x 2 W resistors connected in parallel. The...
Based on components from Linear Technology, we find this circuit in a 2005 manual. The circuit...