This amplifier for playback of recordings was found in a 1947 manual. It uses a push-pull output with a tube power supply.
This circuit was obtained from an old English book. Transistors are types of the time....
Found in 1967 Raytheon documentation, this circuit uses a company coupler consisting of a lamp and...
The basis of this circuit is the TL032 from Texas Instruments. The circuit converts an input in...