The gain of this amplifier is given by the components indicated in the formulas next to the diagram. The power supply must be symmetrical and equivalent operational amplifiers can be used.
This driver for audio signals using the TAA435 integrated circuit was found in Philips 1968...
Found in a 1980s documentation, this circuit uses transistors from that time. Modern equivalents can be...
The SH-205R receiver was sold in the 1960s in Japan. It used two germanium transistors and had a...