This circuit was found in the March 1997 Electronics Now magazine. It uses a common analog indicator and the transistor is a general purpose one.
Found in a 1967 Electronic Design, this circuit can detect pulses as narrow as 0.2 us. Active...
This circuit has a monostable action with time given by the capacitor. The bipolar transistor can...
September 2017 - Texas Instruments TPS543C20 Step-Down Converters can be found on Mouser...