This circuit, which can act as a shield, was found in a 1990 PE Hobbyst Handbook. The circuit generates logic pulses for different types of applications.
This circuit is from the 70s. The integrated circuit used is not common today and the supply is...
This circuit, with 1 A output, was found in a 1975 documentation. The transistors admit...
With this circuit it is possible to control an operational amplifier so that it switches an input...