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Delay Timer – Circuit Schematic
Delay Timer
150 - 210 secs analog delay timer project for control of devices that need to have a minimum off timer before power can resume to prevent damage to the devices ...
Relay Sequencer Board – Circuit Schematic
Relay Sequencer Board
A relay sequencer is used in a radio transverter and is use to activate particular stages in order after short delay. This project describes how to build this s...
Darkroom Timer v2.0A for PCB Exposure Box – Circuit Schematic
Darkroom Timer v2.0A for PCB Exposure Box
This is an improved version of the Darkroom Timer originally created by Stan Ockers (1999). Some extra features were added and the PIC code was modified accordi...
CD4060 Timer Circuit 1 minute to 2 hours – Circuit Schematic
CD4060 Timer Circuit 1 minute to 2 hours
CD4060 Timer Circuit 1 minute to 2 hours This is a 1 minute to two-hour timer switch. The 14-stage binary ripple counter Type 4060, IC1, has an.....
555 Timer Time Delay Circuit – Circuit Schematic
555 Timer Time Delay Circuit
555 Timer Time Delay Circuit LEDs indicate at a glance what the status of the circuit is at any given moment. Once the reset switch, SW2, makes.....
Timer Countdown – Circuit Schematic
Timer Countdown
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555 timer motion led circuit – Circuit Schematic
555 timer motion led circuit
The objective is to make a small light that is activated by motion and will remain on for 20 seconds and then deactivate. i. e. you pick up the light it illumin...
timer control 1 15 minutes by triac 2n6075 and lm555 lm358 – Circuit Schematic
timer control 1 15 minutes by triac 2n6075 and lm555 lm358
Most timer circuits. Often used with electrical transformers containing low as 9V and 12V, and use of electrical control relays.but the 1-15 minute timer.....
Switch off delay circuit by 2N4871 – Circuit Schematic
Switch off delay circuit by 2N4871
This circuit prevents surges. From the opening is switched off or power failure. The damage to electrical appliances. The circuit will switch to use a short.....
Simple Timer by CA3140 + NE555 – Circuit Schematic
Simple Timer by CA3140 + NE555
This be the circuit sets the time to model is simple,at can fix the time had long ago and have tall good accuracy. By use pillar equipment be IC CA3140 for.....
On After Delay with Mosfet – Circuit Schematic
On After Delay with Mosfet
That be On After Delay Circuit. I uses mosfet in the circuit for delay easy more than the transistor. By have the work of the circuit be when press , S1 ,.....
5 Minutes Time Delay using CD4093 – Circuit Schematic
5 Minutes Time Delay using CD4093
This be delay timer circuit model to be simple. It be the character delays to close electric all appliances. By fix the time about 5 minute. It can fine.....
10 minute time delay by fet 2n3819 – Circuit Schematic
10 minute time delay by fet 2n3819
This circuit is a basic function of the FET 2N3819, which acts as a switch. In the conduction and not conduction. It runs contrary to the transistor. The.....
Delay Circuit – Circuit Schematic
Delay Circuit
I need to make a small 4-10 second (changeable) delay circuit that pulses a cell phone vibrational motor every 0.75 seconds. I`m using a 9 volt battery. Could a...
Safety Guard – Circuit Schematic
Safety Guard
Protect your home appliances from voltage spikes with this simple time delay circuit. Whenever power to the appliances is switched on or resumes after mai.....
Long Delay TimerCircuit – Circuit Schematic
Long Delay TimerCircuit
This timer was designed mainly to switch off a portable radio after some time: in this way, one can fall asleep on the sand or on a hammock, resting assured tha...
Jogging TimerCircuit – Circuit Schematic
Jogging TimerCircuit
3V Battery powered, Beeps after a fixed minutes delay This circuit was developed since a number of visitors of this website requested a timer capable of e.....
Handy Time Delay With Relay Output – Circuit Schematic
Handy Time Delay With Relay Output
This circuit is designed to provide delayed relay switching action at power on. The delay is a function of the time constant produced by the combination o.....
Amplifier Timer Circuit Schematic – Circuit Schematic
Amplifier Timer Circuit Schematic
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 a.....
A Very Useful Timed Beeper Circuit Schematic – Circuit Schematic
A Very Useful Timed Beeper Circuit Schematic
This circuit is intended for alerting purposes after a certain time is elapsed. It is suitable for table games requiring a fixed time to answer a question, or t...