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Timer circuit diagrams
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]
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]
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]
December 8, 2010
A switched timer with equal make and equal space periods timing adjustable from over 6 minutes to 38 minutes. [more]
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]
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]
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]
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]
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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