on delay timer circuit

Switch ON Delay Timer circuit

Share this

Switch ON Delay Timer Circuit Diagram

Power ON Delay Timer 

If You Want to switch on any Load After Some Moment Or Some Duration Then You Can Use this Timer Circuit. This is Tested.  Timing Can be Adjusted By Adjustment of Preset. 

This circuit is very useful in the Protection of Any Load. A Device Can be Damaged By the Sudden Unstabilized Current or Voltage flow Through Whole Circuit. Sometimes Mains Voltage Take Some Moments to Stabilization. 

So If You Connect a Delay Timer, the Timer Stops The Current Flow For A Fix Duration, and After That, It Allow To Pass The Current.

2N2222 is more suitable At the place of Q2

Circuit -1

Power ON Time Delay Timer Circuit Diagram For Switch ON Any Load After Some Duration

Parts

IC 555 – 1

Preset 1M- 1

capacitor 2.2uf 63v – 1

0.1uf – 2 or 0.22uf -1

Resistor –

560k- 1

1k-1

2.2k -3

3.3k-1

Diode 1N4007 -1

Relay 12v -1 

transistor- BC548 or 2N2222A – 2

12v DC supply-1

 

Circuit 2

This is a great circuit

ON time delay timer circuit

on delay timer circuit

Parts

IC 555 -1

Bridge rectifier -1

capacitor

1000uf 25v -1

100uf 25v -1

Resistor 1k- 1,   56k -1

transistor 2N2222A- 1

Relay 12v -1

Diode 1N4007 -1

12-0-12v step-down transformer (500ma or 1A)-1

power on delay timer

Both circuits are tested with the 12v supply

Applications/ uses of switch ON delay timer circuit

  1. Motor Control: In motor control applications, a switch ON delay timer can be used to delay the activation of a motor after power is applied. This delay allows time for the motor to stabilize and reach its optimal operating conditions before it starts running.
  2. Power Sequencing: Switch ON delay timers are commonly used in power sequencing circuits. They ensure that certain devices or subsystems power up in a specific order, preventing issues such as voltage spikes or excessive inrush currents that can occur when multiple devices turn on simultaneously.
  3. Equipment Protection: In some cases, it is necessary to introduce a delay before certain equipment or loads are energized to protect them from potential damage. For example, in audio amplifiers, a switch ON delay timer can be used to delay the activation of speakers, preventing any potential speaker-damaging transients or thumps during power-up.
  4. Power Supply Stabilization: Switch ON delay timers can be used in power supply circuits to allow sufficient time for the power supply to stabilize before connecting it to the load. This helps prevent voltage fluctuations or surges from affecting the connected equipment.
  5. Safety Applications: In certain safety-related applications, such as industrial equipment or high-power systems, a switch ON delay timer can be used to ensure that critical systems, alarms, or safety interlocks are activated after a specified delay, allowing time for pre-start checks or system initialization.

Pinout of BC548 and BC547 is same.

BC 547 transistor. Transistor BC547 Pin configuration Diagram2n2222 transistor pinout

Testing Video

Also Read

Share this

10 thoughts on “Switch ON Delay Timer circuit”

  1. My family members always say that I am killing my time here at web, except I know I am getting experience all
    the time by reading such nice posts.

  2. About cooperation

    Become a byweb partner and receive payments of up to 30% from each payment of the attracted client to create the site.

    If you have attracted a client to create a site for us, then please provide the name of the client to our feedback

    How to find us?

    It is very easy to find a search query in Google:

    “website development USA “Byweb””

    Below the contextual advertising will be our site best-website-deve….

    Respectfully,
    Web agency ByWeb – best-website-development.com
    Creation and promotion of sites in USA

  3. Use electrical appliances as before
    AND PAY IN 2 TIMES LESS!
    http://bit.ly/2EbTVvc «Electricity saving box» — substantial savings!
    Reduces the current consumption of electrical appliances, due to this, the meter is “spinning” less and, as a result, monthly electricity bills are reduced!
    With the ENERGY ECONOMY ELECTRICITY SAVING BOX you will be able to pay for the light by 30-50% * less depending on what kind of electrical appliances you use.

  4. Good day and welcome to my website . I’m Amaya.
    I have always dreamed of being a novelist but never dreamed I’d make a career of it. In college, though, I aided a fellow student who needed help. She could not stop telling me how well I had done. Word got around and someone asked me for writing help just a week later. This time they would compensate me for my work.
    During the summer, I started doing academic writing for students at the local college. It helped me have fun that summer and even funded some of my college tuition. Today, I still offer my writing skills to students.

    Academic Writer – Amaya Landry – translating-cultures-networking-development.com Team

  5. My name is Karla Fuentes. And I am a professional Content writer with many years of experience in writing.

    My interest is to solve problems related to writing. And I have been doing it for many years. I have been with several organizations as a volunteer and have assisted clients in many ways.
    My love for writing has no end. It is like the air we breathe, something I cherish with all my being. I am a passionate writer who started at an early age.
    I’m happy that I`ve already sold several copies of my poems in different countries like USA, Russia and others too numerous to mention.
    I also work in an organization that provides assistance to many people from different parts of the world. Students always come to me because I work no matter how difficult their projects are. I help them to save energy, because I feel happy when people come to me for writing help.

    Academic Writer – Karla – capitalcollege.us Corp

  6. There is so much in this article that I would never have thought of on my own. Your content gives readers things to think about in an interesting way.

  7. я гадюка. я жив в україні в маріополі зараз живу в польщі. де знайти роботу??? гадюка

Leave a Comment

Your email address will not be published. Required fields are marked *