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DIY Hobby projects, diagram, schematic

Musical Doorbell Circuit Diagram

electronicecircuits, September 18, 2010August 15, 2023
Musical Doorbell Circuit

Musical Doorbell Circuit Diagram

This musical doorbell circuit uses UM3481 A series IC.  It is intended for applications such as toys, door bells, music boxes, melody clock/timers and telephones. The UM3481A is designed to play the melody according to the previously programmed information and is capable of generating 16 songs with 3 instrument effects: piano, organ and mandolin. This door bell circuit can power up using 1.5v battery cell or two 1.5v battery cells.

Musical Doorbell Circuit Diagram

PARTS LIST
R182kΩ
R2180kΩ
C147pF
C22.2µF 16V
Q12SC828
LS14Ω 0.5W Speaker
PB1Push to On Switch
IC1Um3481A, UM3482A or UM3483A

This door bell circuit has very  low stand-by current. C1 and R1 act as the timing components for the built in oscillator. This IC also includes a preamplifier which provides a simple interface to the driver circuit. Q1 is used for driving the speaker.

Um3481A, UM3482A and UM3483A song list
Song List

When you push the PB1 switch, playing one song and it is auto stop.

Please send your ideas, which are very important for our success…

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Comments (12)

  1. Michael says:
    September 20, 2010 at 2:30 pm

    I made something similar few years ago but it broke after two days because I left it where my dog can get it and this is how my doorbell fun ended 🙂

    Reply
  2. zafar abbas says:
    March 12, 2011 at 8:09 pm

    I am a learner and really enjoying your projects.

    Reply
  3. kiran says:
    June 28, 2011 at 8:36 pm

    dear sir,
    please send me a more simple diagram but the sound should be more because i want to make car reverse horn.please send me fast.

    thankyou,
    from kiran

    Reply
  4. APPANNA says:
    August 5, 2011 at 1:54 pm

    HARE KRISHNA
    I WANT TO DESIGN REVERSE HORN WITH ISKCON TUNE CAN YOU HELP ME

    Reply
  5. Angie says:
    May 22, 2012 at 6:03 am

    does it matter if the resistor is a .5 or 1 watts or if the speaker is 8 ohms? if it does, where can i get a 4 ohm speaker and the Um3481A, UM3482A or UM3483A?

    Reply
  6. vidyasagar kalla says:
    June 4, 2012 at 6:09 pm

    I want user music in my doorbell what to do ?????

    Reply
  7. gaurav gothi says:
    August 28, 2012 at 1:22 pm

    Michael :
    I made something similar few years ago but it broke after two days because I left it where my dog can get it and this is how my doorbell fun ended

    hiiiii

    Reply
  8. Sabry says:
    October 8, 2012 at 7:32 pm

    I HAVE TO THANK YOU

    Reply
  9. kavi says:
    February 18, 2013 at 11:28 pm

    can i program any songs/tune of my own choice to play in the bell?????if so could you please help me out
    thanku

    Reply
  10. TRUPTI says:
    March 20, 2014 at 4:56 pm

    can i add my choice of song in IC UM 3481 series?

    Reply
  11. kulwant says:
    August 10, 2014 at 6:51 am

    plz tell m whts the price of this ic.
    where it is available.
    can anybdy snd m a sample of this ic

    Reply
  12. krishna says:
    April 13, 2015 at 9:09 pm

    it not solwed

    Reply

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