Rail to Rail Oscillator 555 (CB9099E)

Found in an Electronic Design from the 80s, this circuit generates a 500 Hz signal and can be used as a shield

Infrared Pulse Transmitter (CB14689E)
The circuit shown is from a Texas Instruments optoelectronics manual. RE depends on the peak...
Two-Transistor Broadband Amplifier (CB25637E)
This circuit was found in the November 1993 issue of Electronics Now magazine. The two-stage...
Two-transistor AM radio (CB8494E)
Found in old documentation, this receiver for the mid-wave range uses transistors from the era. In...