This circuit was found in a 1964 Electronic Design. It generates opposite phase signals from an input signal. Modern equivalent transistors can be used in the same configuration.
Radio Electronics magazine published in a 90's issue this simple alarm that can use any general...
The passage of an object in front of the LDR in order to cause a momentary shadow triggers the...
September 2016 - can already be found at Mouser Electronics new integrated circuit from Texas...