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Timer circuit diagrams

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Bedside Lamp Timer
Bedside Lamp Timer
December 12, 2010

he purpose of this circuit is that of power a lamp or other apparatus for a given time (30 minutes in this case), and then to turn it off. [more]

NE555 Basic Monostable
NE555 Basic Monostable
December 10, 2010

Here the popular 555 timing IC, is wired as a monostable. The timing period is precise and equivalent to: 1.1 x R1 x C1 [more]

Repeating Interval Timer
Repeating Interval Timer
December 9, 2010

This circuit has an adjustable output timer that will re-trigger at regular intervals. The output period can be anything from a fraction of a second to half-an-hour or more - and it can be made... [more]

Periodic Timer
Periodic Timer
December 8, 2010

A switched timer with equal make and equal space periods timing adjustable from over 6 minutes to 38 minutes. [more]

Amplifier Timer
Amplifier Timer
December 2, 2010

Turns-off your amplifier when idle for 15 minutes [more]

Photo Timer Circuit
Photo Timer Circuit
November 18, 2010

Time is set by potentiometer R2 which provides a range or 1 sec. To 100 seconds with timing capacitor C1 of 100uF. The output at pin 3 is normally low and the relay is held... [more]

Tan Timer
Tan Timer
November 9, 2010

This timer was deliberately designed for people wanting to get tanned but at the same time wishing to avoid an excessive exposure to sunlight. [more]

Jogging Timer
Jogging Timer
November 8, 2010

This circuit was developed since a number of visitors of this website requested a timer capable of emitting a beep after one, two, three minutes and so on, for jogging purposes. [more]

Time Delay Relay II
Time Delay Relay II
October 17, 2010

When activated by pressing a button, this time delay relay will activate a load after a specified amount of time. This time is adjustable to whatever you want simply by changing the value of a... [more]

Time Delay Relay
Time Delay Relay
October 17, 2010

A time delay relay is a relay that stays on for a certain amount of time once activated. This time delay relay is made up of a simple adjustable timer circuit which controls the actual... [more]



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