Many Electronic circuit projects in simple ways of learning

Three Simple Door Buzzer Circuits

These are many simple door buzzer circuits, use low voltage so safely.

I fall bored old buzzer. When using the AC line, the danger of leakage power in the heavy rain.

Three Circuits Below can help you!   What is more?

Have you ever had a problem with the front doorbell or not?

When used with directly AC line, the danger of leakage power in the heavy rain.

And the doorbell quality is very expensive.

I think we try to make yourself better, strange sounds are unique. Cheap pieces of equipment. And high performance. Because we have Choose circuit.

I collected many of the circuits as follows.


1. Door buzzer circuit diagram using 555

This is an easy buzzer circuit. It uses IC 555 timer as key, Speaker 25 -80 Ω.

Door buzzer with IC-555

I demolish a store-room, see old loudspeaker, and other equipment a little again. Then born the though builds Door Buzzer by use, IC 555. Perform sound electric bell origin.

When press S1, as a result, have a voice fair loud. This circuit almost must not do anything.

Because divisible Amen! should use 25-80 Ω size loudspeakers. It will make good sound use force against electricity low work or economize the electricity. You will use 9V batteries all right.


2. Door Buzzer circuit using NE555 + LM386

Someday I goes to visit a friend. He begs me helps to seek electric bell front door circuit. In model to be simple, use the a little equipment. I then choose the Door Buzzer circuit this give. Because of use , IC NE555 produce electric bell sound and use IC LM386 for amplify talk at one time. For R1 use fine decorate the sound as you like it. request have fun this circuit.

Door Buzzer circuit using NE555 + LM386

3. Simple Electronic Bell Generator using LM741

This is a basic electronic ell circuit, it is interesting. We use a number of IC-741 Op-amp, it works. When you press S1 will be mimic the bell sound at the output pin 6 of IC1, which we can fine tone sound with three potentiometer are VR1-1M, VR2-1M and VR3-1M to control sound as close as possible. We set form of the audio oscillator generator or sine wave form can be changed with by pressing our S1. But sound is slight required to use power amplifier for boost up its. And this circuit need the dual power supply positive, ground, and negative 9V power supply.

Simple Electronic Bell Generator using LM741

Related Posts

JLCPCB - Only $2 for PCB Protytpe(Any Color)

With 600,000+ Customers Worldwide, 10,000+ PCB Orders Per Day

Up to $20 shipping discount on first order now:

This Post Has 12 Comments

  1. You provide good circuits & some r intresting & easy to assemble.Keep it up./

  2. i am the student of 3rd year electronic and communication branch.i am making the project power generation using speed breaker with the help oh piezoelectric buzzer.please provide me the circuit for this…….i will be highly obliged…..

  3. Please i have been trying build the salt and alkaline tester as well as the door buzzers there are not working properly. I need them for my project. Thanks

  4. Hai sir,iam the student of 3rd year student,sir,i want some electronic mini projects,so,could you please send me that mini projects sir

  5. simplified and straightfoward circuits .

  6. Hello sir, i thank you for the good work that you have been doing. Do keep it up. I am just a beginner in electronic career from Nigeria and your site have been very helpful. Please help me with what ever informaion you can …thanks a lot.

  7. Hello,Emly
    Thanks for your feedback.

  8. sir can u plz tell me what are the applications of buzzer circuit

  9. Dear sir am very grateful for your good works in engineering

  10. Are there any 1 second long buzzers?

  11. my friend was needing GA T-7 earlier today and was made aware of a great service that has lots of fillable forms . If you need to fill out GA T-7 as well , here’s a

  12. Right here is the right web site for anybody who wants to understand this topic.
    You know so much its almost hard to argue with you (not that I really will need to…HaHa).

    You certainly put a new spin on a topic that has been discussed
    for many years. Great stuff, just excellent!

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Close Menu