Musical Doorbell Circuit Diagram

08 Sep, 2021

Instead of having a common buzz sound for doorbell a musical sound will be produce which is more pleasing to hear. In many cases a doorbell that sounds off a musical tone is preferable over the common buzz sound.

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The diagram above depicts the proposed musical door bell circuit the various stages may be understood with the following explanation.

Musical doorbell circuit diagram. The bt66t is an easy to use little melody generator ic mainly used in circuits where a melody has to be played as a notification for the user. Connect the input wires on the transformer to the source circuit using the black to black white to white and ground to green method. Listening same door bell tune at always may be boring this melody generator doorbell circuit may help us to avoid this dull situation because this circuit provides 12 tones this multi tone door bell circuit produces 12 types of musical tone you get twelve popular tones in sequences that gives a new dimension to musical door bells.

A short melody is played after button s1 is pressed and when it is pressed many times in rapid succession or pressed longer a different melody is generated and it plays loger. The bc547 transistor along with the associated preset and the 100uf capacitor form a simple delay off timer circuit where the preset and the capacitor determines the delay for which the sound output may be sustained once the indicated push button is pressed momentarily. Wiring diagram for a two chime doorbell wiring for two doors is the same as for one with the transformer hardwired to the 120 volt source from a house circuit.

When i got it working it sounded terrible distorted like an amp cranked up to 11. Wiring instructions we re so so relying on picture diagrams. It is intended for applications such as toys door bells music boxes melody clock timers and telephones.

The schematic diagram alongside shows a straightforward design of an electronic musical doorbell basically comprising three important stages. The design is a modified type of doorbell. Musical doorbell circuit diagram when s1 is released opened the register runs until the capacitor c1 gets discharged through r2.

This featured circuit is a musical doorbell. As the name suggests the function of this stage is to produce a certain time delay for keeping the music or the output audible even after the call bell button is released and the power to the. This featured circuit is a musical doorbell.

I had to look at it multiple times to understand it and made a couple errors. The circuit for the musical doorbell can be seen below and is relatively simple. When s1 is again pressed closed the capacitor c1 stays charged causing the musical bell to play continously.

Rewire a few times was simple and these went quickly. Musical doorbell circuit diagram this musical doorbell circuit uses um3481 a series ic. This is a nice sounding door bell with a variety of tunes.

As pointed above at the heart of the circuit is a very old melody generator chip the bt66t ic2.

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