This an old commercial receiver found in a year 1958 magazine. The circuit uses some transformer available that timer and the transistors are germanium types. The circuit is intended to receive MW stations.
This circuit is used to convert audio signals from na amplifier into infrared modulated signals....
This simple CMOS circuit generates two-frequency signals for use as a signal injector. The circuit...
It can be obtained from Mouser Electronics, sensors (receivers) transmitters and benders for...