This circuit of an EDN divides the input pulse frequency by even values. The circuit is TTL and can be used as a shield for microcontrollers.
This circuit is from a 90s Popular Electronics. It consists of a power source for bass amplifiers...
This sophisticated moving bar indicator circuit with the LM3915 is from a Radio Electronics...
This simulation shows how can we test a capacitor using a function generator and oscilloscope. The...