How to Make a Simple Delay Timer Circuit Using Capacitor and Transistor?

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How to Make a Simple Delay Timer Circuit Using Capacitor and Transistor?

Рет қаралды 63,144

10 ай бұрын

In this video, I will explain the working of the transistor timer circuit, also known as delay timer or turn on circuit, which is an example of a hobby electronic circuit that you can easily make on a breadboard and make using basic circuit elements such as BJT transistors, capacitors, LEDs, resistors and buttons. This example will be extremely useful in terms of better understanding the principle of BJT Transistor and capacitor working together. For a better understanding, I recommend that you consider the video as a whole and watch it until the end. If you watch the video until the end, you will better understand the logic of the capacitor's operation in DC. I will also show a simulation of this circuit with Proteus towards the end of the video.
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Пікірлер: 38

@DesertVox 10 ай бұрын

Simple circuits like this are good for beginners to easily understand where the current is going in the circuit, and what the role of the different resistors and capacitors are.

@larrybud 6 ай бұрын

For the new guys in town: If you're going to replace the transistor with something, such as a 2n2222 or 2n3904, be sure to check the pinouts. BC547 is CBE while 2222/3904 is EBC

@sargismartirosyan9946 10 ай бұрын

I LOVED IT LOVE THE EVERY Single BIT of the video pls PLSSSSS make a video about this. Transistor timer delay OFF circuit This was ON circuit can you show OFF pls 🙏 :) Btw I enjoyed so much the video

@haf-oq3vt 10 ай бұрын

Very clear my friend❤

@rajiWickramanayake-yo5qo 7 ай бұрын

Good explain

@dhrubavideos 3 ай бұрын

Awesome, i am feeling like an engineer

@paramjitsingh137 7 күн бұрын

Good for basic demo but not perfect timing

@uttukruichy4994 6 ай бұрын

thanks bro

@2manyguitarz Ай бұрын

great lesson.... now....can we modify this so the LED is replaced with a enough juice to turn on relay, for 10sec THEN, turn off, and AUTOMATICaLY REPEAT EVERY HOUR?// until power is disonnected?/ my water fall evaporates considerably when its hot i want to filk it ever hr till night ⛲🍺👍

@RichmondNyamalor-yh4ch 3 ай бұрын

Good work

@ioduremetallique 9 ай бұрын

the button will quickly be out of service. (Because of the current peak when charging the capacitor)

@KarlOnSea 7 ай бұрын

Agreed - with a similar set up powered by three AAA batteries, I measured the peak current at over 5A as the capacitor charges. So I've just designed a circuit with a MOSFET to charge the capacitor, and then the BJT to switch on the LED.

@larrybud 6 ай бұрын

@@KarlOnSea Just put a resistor in series between the button an the + on the cap.

@davidbarrett7424 5 ай бұрын

Would a suitable current limiting resistor in series with the switch fix it?

@allanpatterson7653 4 ай бұрын

That first contact the Capacitor will discharge on its contacts max amperage. It is like hammering it.

@Teenagegoogoomuk 8 ай бұрын

Got a vid for a one shot after delay? need to time out then cycle one time after power up cycle? Basically bypassing a switch for one cycle ?

@zoranpetrovski3051 10 ай бұрын

Awesome

@eeapplications 10 ай бұрын

Thank you so much ☺️

@zoranpetrovski3051 10 ай бұрын

@@eeapplications You welcome.

@yasithagayan 5 ай бұрын

Hello. Do you know car start up scan LED strip. It normal function is when start the engine LED strip is turning on then automatic LED stip and stay turn on untill turn off the engine. Can we use this methode turn off LED strip automatically in few seconds after turning on the engine?

@RichmondNyamalor-yh4ch 3 ай бұрын

Can you please teach how a 555 timer ic works

@robertpoynton9923 10 ай бұрын

What if I wanted to charge a capacitor and have it discharge once it gets to 9 volts automatically?

@stark_energy 5 ай бұрын

You can use 555 IC and voltage divider.

@jamsheenav1014 3 ай бұрын

Can you make a circuit diagram of lighting led for 5 second on open circuit Please 🙏🙏🙏

@jumbo999614 10 ай бұрын

Instead of your finger on the push button, can we get output from other circuit as input to this delay circuit?

@DesertVox 10 ай бұрын

I guess using another transistor like the BC547 to replace the push button.

@DigiLab360 9 ай бұрын

Yes, you can use the output of a microcontroller for example.

@sergiotricarico 9 ай бұрын

Perhaps an optocoupler (given that are two circuits), just be sure that it will handle the current

@tommoore4071 2 ай бұрын

An R/C timer with a transistor latch circuit could delay turn on and hold it.

@Redoxifiedguy 4 ай бұрын

which is the software he used for showing circuit demo????????????????????/🤔🤔🤔🤔🤔🤔🤔🤔

@thesidd19 3 ай бұрын

Proteus

@neonblowfish 5 ай бұрын

Shorting the power supply to common through the cap is a bad idea. You need to current limit that cap.

@khaozelectrichead 5 ай бұрын

I didnt know that current flowed through a cap in dc. I guess it could fail with age.

@Dad-ij2qy 4 ай бұрын

Why ? It's a capacitor, not an LED. As long as you don't apply more volts than the capacitor is rated for, it will be okay.

@sargismartirosyan9946 10 ай бұрын

Nice also what's the simulation software name ?

@alnea 10 ай бұрын

Proteus

@Comrade_YG 4 ай бұрын

@@alneais it free

@hkcccc2889 3 ай бұрын