Simple delay circuit Diagram

This is simple delay circuit.When you change the value of cap the time delay will be changed.I suppose beginners can learn a lot from this circuit and this circuit gives you to build or fix new circuits
Note

# This circuit can be operated with 4.5V power supply

Quad 2 Input CMOS IC 4011 Timer Circuit

Timer circuit can be used to switch OFF a particular device after around 35 minutes. The circuit can be used to switch OFF devices like radio, TV, fan, pump etc after a preset time of 35 minutes. Such a circuit can surely save a lot of power.

The circuit is based on quad 2 input CMOS IC 4011 (U1).The resistor R1 and capacitor C1 produces the required long time delay. When pushbutton switch S2 is pressed, capacitor C1 discharges and input of the four NAND gates are pulled to zero. The four shorted outputs of U1 go high and activate the transistor Q1 to drive the relay. The appliance connected via the relay is switched ON. When S2 is released the C1 starts charging and when the voltage at its positive pin becomes equal to ½ the supply voltage the outputs of U1 becomes zero and the transistor is switched OFF. This makes the relay deactivated and the appliance connected via the relay is turned OFF. The timer can be made to stop when required by pressing switch S1

Time Delay Relay II by IC 4011

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 resistor and/or capacitor. The current capacity of the circuit is only limited by what kind of relay you decide to use.

Time Delay Relay by 555

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 relay. The time is adjustable from 0 to about 20 seconds with the parts specified. The current capacity of the circuit is only limited by what kind

of relay you decide to use

Basic Timer Control with NE555

As friends many take an interest the circuit about IC 555 which be integrated highly popular that circuit. I then lead the circuit sets the time be Basic Timer Control with NE555 come to present again. By it basically the base of the circuit sets the time work instruction easily initial. Press S1 for a already moment liberate for initial setting the time (Timing Cycle) Relay encouraged work (Pulled in). Until anniversary completed work. The R1 and C1 control length of while delaied keep. If use the value C1 very the time long ago go up This circuit meets to wasp Logic pulse with sir. Request have fun the circuit sets the time this easily

Basic Timer using FET 2N3819

This circuit be Basic Timer Circuit by use important equipment is FET 2N3819. By this circuit can can delay long ago arrive at 1.5 minute. Stand S1 at a position Reset an electric bell will loud. Totter S1 come back at time an electric bell will silent until time drag will stop electric bell talk at one time again. If friends enhance the value C1 or R1 for delay long ago go up. devalue R2 while stay in a position Reset for Reset fast go up. Request friends have fun Basic Timer Circuit ,

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 , an electric bell will not loud suddenly , must wait for follow the period of time that note. The Q2 will get back to the position or Status of Q1. Thus electronics bell will loud immediately after. The time haded delaied until finish already. If enhance the value C1 while delaied long go up. Note: Rs add keep for decrease the popularity of an electric bell , R1 add keep for decrease the time down and decrease the noise give Mosfet. The Q2 use 2N2222 or BC549 or C1815. .

OFF After Delay Switch by Mosfet

This is OFF After Delay Switch Circuit. It is use Mosfet control the work of LOAD get. By have the work is simple be press Switch (Close) and liberate (Open) S1 an electric bell will loud. After C1 is charger within or change R1 ( the accessory is ) The Q1 is stop work. An electric bell is soundless while delay long follow want. By the change value C1. If be valuable about 1uF delay about minute , but if become 100uF values be hour.
Note: Load that use be Piezo Buzzer or handbag radio or light bulb etc. Be careful don’t use exceed one’s power of Q1. you use a resister builds serial at the dot X for decrease the trend that flow through Q1 go to still Load less. This circuit may in rows think to is simple about , Delay Switch Circuit again interesting circuit please sir

10 Second Fan ON delay time by transistor

A friend of me wants the circuit at can turn ON Fan 12V at use in an automobile. By fix the period of time about 10 second. He sets conditions that must use electronic part economize and seek easy with. I then choose transistors and relay be control electric fan equipment follow the circuit in a picture. The value delays can fix with R1 and C1 which there is a formula calculates 0.5 x R1 x C1 . When press S1 wait for about 10 second relay then work turn on give the electric fan works. .

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 decorate the time. When see the circuit uses digital IC number CD4093 make good easy. And use transistor driver relay. It performs to edit the electricity gives with load or the electric appliances is all. When see our circuit uses electronic part that seek easy. May have no the problem about part. For LED1 use for display when feed power supply reach the circuit. It usability easily just press S1 for begin be usable.

Electronic Time Constant Control

These circuits show methods of changing the operating frequency of astable LM555 timers electronically. Any source that can drive the base of transistor Q1 can control these circuits.
The advantage of using this type of frequency control is that the duty cycle of the timer is not affected when the frequency is changed. [...]