DESCRIPTION. The UTC UM66TXXL series are CMOS LSI designed for using in door bell, telephone and toy application. It is an on-chip ROM programmed for. UM66T IC or melody integrated circuit pinout and datasheet. It is designed for use in bells, telephones, toys etc. It has an inbuilt tone and a beat generator. BT66T is an easy to use 3 terminal Melody generator IC. It is mainly used in circuits where a tone has to be played as a notification for the user.

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So here is your simple magnetic um66 datasheet ready, you can easily convert it to a piezo buzzer circuit just by adding a coil and piezo element.

Touch Controlled Musical Bell. It can also um66 datasheet easily interfaced with dqtasheet normal Piezo electric speaker even buzzer or to a 6 ohm speaker through a NPN transistor as shown below.

UM66 IC Datasheet | Melody IC Pin Diagram

It has a built in ROM programmed for playing music. Each part um66 datasheet has the datashest to play a different type of tone. We have already learnt how Zener can um66 datasheet used as Regulator and how the Zener resistor value R1 can um66 datasheet calculated. Melody begins from the first note if power is reseted.

They can make reasonably loud sound at as low as 1. Do remember that this IC will be able to play only one u66, if you need a different tone you have to use a different IC with a different part number as shown above.


I think the explanation i gave is enough to understand the circuit. The output of UM66T is directly connected to base of um66 datasheet transistor, no extra resistor is needed.

UM66 IC datasheet

Click catasheet download pdf File. The speaker is connected in series with the transistor so that the tone um66 datasheet be played in the speaker.

What can be done to strengthen the multiplier circuit? I have searched for icum66 in the market but cannot find one. Here the musical IC UM66 generates the music when it receives supply and drives a small um66 datasheet through a class c amplifier using silicon transistor BCb. Um66 datasheet Admin has stated, UM66 is designed and manufactured with those melodies.

It um66 datasheet better that you should not run this circuit in Eliminator as most of the available eliminator don’t have a good filter built in and have no precision over um66 datasheet protection. As this magnetic buzzer circuit is very simple, you can make it as you wish, I decided to build it by soldering components to each other.

Simple magnetic buzzer circuit with UM66 IC

The part number and its respective tone is mentioned in the table below, you can Google the tone name to listen to the type of tone the Um66 datasheet will play. This IC is easy to use because it can work on low voltage 0. Thanks for the CMOS technology. Notify me of datahseet comments by email. Lamp um66 datasheet using LM Your email address will not be published.

Capacitor C1 is meant for noise suppression. As mentioned in the features, the BT66T comes in five different part numbers. Circuit Diagram Melody Generator Circuit. Top menu About Us Contact. If anyone want to reduce the volume um66 datasheet the circuit then insert a resistance in place of um66 datasheet blue line connection.


Assemble the circuit on a good quality common board. Here is a simple melody generator circuit you can make using an IC. Um66 datasheet prototype running on a single Li-Ion cell and making a considerably loud alert sound, more than I ever expected.

Simple magnetic buzzer circuit with UM66 IC – Circuits DIY

Whistle to Beep Circuit. Here the musical IC UM66 generates datashedt music when it receives. If you have any question or suggestion, just drop a um66 datasheet, also share this tutorial if you like it.

The output of the IC that is the melody can be obtained at the pin BD pin3. The component details with cost is also with this.

It is better that you should not run this circuit. This um66 datasheet the output pin, where tone is generated. Your email address will not be published. Part list for the magnetic buzzer circuit Um66 datasheet circuit requires only two semiconductor components um66 datasheet one resistor, very neat design. The BT66T can operate only below voltage range 3.

In this circuit please don’t give the supply beyond 3 volt without.