Timer switch circuit
A 100 second delayed turn ON relay RL1 switch, if plug power +12V in circuit. In Fig.2 see a two range 6-60 second and 1-10 minute auto turn off relay timer cir...
Mains Delay Switch For Lambs and Motors
A circuit that will find enough applications. Basically the designing became in order to exist delay in quench one or more lamps in a stairwell or in any other ...
Light timer switch with PIC12F629
This is a lamp timer capable of operating two separate relay switches. Outputs can be in three (or restricted to two) states: OFF, delayed ON and constant ON. D...
Count Down Timer Relay with 555
The 555 is configured in the standard astable oscillator circuit designed to give a square wave cycle at a period of around 1 cycle/sec. A potentiometer is incl...
555 LED flasher
This circuit is built around one of the most popular timer integrated circuits, the 555 timer. It will flash the led on and of at regular intervals. From left t...
Garden timer circuit with CD4000
The resulting timer circuit is made from a CD4060, includes an oscillator and a 14 stage binary counter, two CD4040's, which are 12 stage binary counters, a CD4...
Light Switch with 555 Timer
When the phototransistor is stroken by IR light it conducts and the voltage between the 1Mohm resistor(arbitrary) and the phototrans drops from VCC to lower val...
Very simple Delay circuit!
The two circuits di atas illustrate opening a relay contact a short time after the ignition or ligh switch is turned off. The capacitor is charged and the relay...
Delay circuit with NE555 timer
This circuit design was used to switch on device via a LED photocell arrangement (optocoupler) using components R1, C1, D1 and Q1. It produces a delay on power...
0-60sec start-stop timer with 555
This timer is ideal for small aplications. Due to its simple structure, its usage and nevertheless its universal character, this mini timer is usable in the mos...
Electrical Appliance Time Controller
Power Saving Using Time Operated Electrical Appliance Controlling System is a reliable circuit that takes over the task of switch on/off the electrical devices ...
Lamp Timer
The purpose of this circuit is to power a lamp or other appliance for a given time (30 minutes in this case), and then to turn it off. It is useful when reading...
Timer
This timer was designed for people wanting to get tanned but at the same time wishing to avoid an excessive exposure to sunlight.
A Rotary Switch sets the time...
Amplifier Timer
Turns-off your amplifier when idle for 15 minutes
Fed by amplifier tape-output. This circuit turns-off an amplifier or any other device when a low level audio ...
Courtesy Lighting with 7555
This circuit is intended to let the user turn off a lamp by means of a switch placed far from bed, allowing him enough time to lie down before the lamp really s...
Periodic Timer
A switched timer with equal make and equal space periods timing adjustable from over 6 minutes to 38 minutes. This timer circuit is similar to the 5 to 30 minut...
5 to 30 Minute Timer
A switched timer for intervals of 5 to 30 minutes incremented in 5 minute steps. Simple to build, simple to make, nothing too complicated here. However you must...
LM555 LED Blinkers
The circuit uses independent timers to flash two light emitting diodes. Any time that light emitting diode D1 is lit__light emitting diode D2 will be switched o...
Time Delay Relay
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 s...
Time Delay Relay
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 s...