Adjustable Timer

Posted on May 21, 2012

LEDs indicate at a glance what the status of the circuit is at any given moment. Once the reset switch, SI, makes contact,

Adjustable Timer
Click here to download the full size of the above Circuit.

the timer remains in that state until the start switch, S2, is pressed. When either switch is activated, LED1 (ready) and the time indicator, LED2, keep track of the situation. Although not necessary, the two LEDs should be of different colors (for example, red for "ready" and green for "time").

Leave Comment

characters left:

New Circuits



Popular Circuits

Dc motor speed control 2
Simple Curve Tracer Circuit
Arduino multi-mode lamp with soft touch switch
SEM/STEM detectors and CRTs
70 MHz Transverter
commodore 64c
room noise detector
what relay should i use parallel port
Power LED Driver
Single flashing light string circuit 1