Suggested by Popular Electronics, it is a digital amplifier, for pulses with frequencies up to a few megahertz.
This circuit was found in 1978 documentation, using the National Semiconductor's LM380. The...
April 2017 - The new Alps UGMZ2AA Bluetooth communication modules can be found on Mouser...
This configuration triggers an external circuit or simply an LED for time given by R1 and C1 (T =...