Timer Circuits and Projects (14)

Browse through a total of 14 Timer Circuits and Projects.

arduino timer diagram

Arduino Self Timer

T.K. Hareendran - 12/11/2013

“Arduino Self-Timer” project presented here is a low-component count 60 seconds countdown timer. It can be powered from [...]
long duration timer circuit

Long Duration Timer

P. Marian - 07/31/2013

In order to create a long duration timer the 556 IC teamed up with a binary divider can [...]

0.3 Second to 10 Hours Timer Relay with 4541 IC

P. Marian - 04/15/2013

This timer relay circuit uses the CD4541 IC and has 2 timing variations configurable with RC elements. The [...]
automatic turn off power schematic

Delayed Automatic Power OFF

P. Marian - 02/28/2013

This circuit is build with the 555 IC and will automatically turn off the power after 20 minutes. [...]

Quirky 555 Timer Reset Function

Jim Keith - 12/02/2012

How many have had legitimate problems with the 555 timer? Let me guess…it involved the reset line, did [...]

Inverted 555 Timer Circuit

Jim Keith - 11/18/2012

Whenever I use the 555 timer, it seems that the output polarity is invariably incorrect, and the way [...]
555 timer positive trigger circuit

Positive Trigger Timer Circuit

D Mohankumar - 11/19/2010

This 555 timer is designed unusually to give a positive output through a control over its reset pin. [...]
time delay relay circuit schematic

555 Time Delay Relay Circuit

P. Marian - 11/08/2010

This time delay relay circuit is built with IC NE/SE555, produced by Intersil which contains a precision timer. [...]
door timer

Door Timer Circuit with Alarm

T.K. Hareendran - 08/13/2010

We are in a digital era! Now we can add some intelligence to our doors and gates without [...]
adjustable timer schematic

Adjustable Timer Circuit with 555 IC

P. Marian - 08/08/2010

The 555 adjustable timer circuit starts timing when switched on. The green LED lights to show that timing [...]
alarm timer circuit schematic

Timer with Alarm Circuit

P. Marian - 06/07/2010

This simple alarm timer circuit is made with 4060 which has an integrated oscillator with a good stability [...]
cd4538 monostable multivibrator circuit

Precision Monostable Circuit

D Mohankumar - 04/15/2010

Here is a monostable multivibrator using IC CD4538. It is a precision monostable/astable multivibrator IC free from false [...]
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