Astable 555 (CB21101E)

This 50% duty cycle configuration was found in a Popular Electronics from the 1990s. The operating frequency is given by C1.

Lock Timer (CB5980E)
It is like to the previous circuit with a lock that keeps the LED on at the end of the timer. The...
Ladder Generator (CB15660E)
The presented circuit generates a signal in the form of a ladder that can be useful for surveying the...
Charge and Discharge Current Sensor (CB5256E)
This 2005 Linear Technology circuit has separate outputs for monitoring the charge and discharge...