This small commercial radio for the MW band with germanium transistors was found in Japanese documentation from the 1960s. The circuit is powered by a 9 V battery and has a 455 kHz IF.
Found in 1980s documentation, this amplifier uses a symmetric source and the gain is given by the...
In the figurewe present an interesting application suggested by Microchip (www.microchip.com) in...
This old diode test, from a documentation from the 1970s, uses two small 6 V lamps up to 50 mA to...