The movement of the LEDs in this circuit mimics the back-and-forth movement of a pendulum, making it suitable for clock projects. The circuit is from a Radio Electronics magazine from May 1978.
The transmitter shown can reach around 100 meters depending on the location and sensitivity of the...
This circuit was obtained from a 1978 Practical Wireless. It generates a low frequency, low...
Using the LM170 integrated circuit, this circuit was found in the May 1970 Radio Electronics...