DataSheet: PDF icon UMpdf. UM66T is a melody integrated circuit. It is designed for use in bells, telephones, toys etc. It has an inbuilt tone and a beat. 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. 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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Melody begins from the first note if power is reseted. Whistle to Beep Circuit.
We have already learnt how Zener can be used as Regulator and how the Zener resistor value R1 can be calculated.
If anyone want to reduce the volume of the circuit then insert a resistance in place of the blue line connection. Do not exceed 4. Hello I cant get that circuit in digikey.
We connect this output to the Base of BC which will also switch on and off in the same tone. The circuit should not be run in Rechargeable battery also if the Speaker resistance is less than datawheet Ohm and may burn the Transistor. These frequencies are a factor of the oscillator frequency. This is the simplest ever musical calling bell that can be easily built.
Melody Generator using IC UM66
I will help you. This project is suitable for beginners as its circuit is very simple. UM66T is a melody integrated circuit. I will add a voice recorder circuit soon. It is 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 voltage protection.
UM66 Datasheet PDF
It has a 62 notes ROM to play music. You can not reprogramme it.
The circuit can be made even without soldering and the ideal for the first electronic project for newbies. Datassheet Technical Details can be found at the datasheet given at the end of this page.
(PDF) UM66 Datasheet download
The BT66T can operate only below voltage range 3. The melody will be available at pin 3 of UM66 and here it is amplified by using Q1 to drive the speaker.
It is mainly used in circuits where a tone has to be played as a notification for the dattasheet. Here the musical IC UM66 generates the music when it receives supply and drives a small speaker through a class c amplifier using silicon transistor BCb.
C1 is used to decouple power supply to avoid inter-modulation between output and IC. It is designed for use in bells, telephones, toys etc. The output of the IC that datassheet the melody can be obtained at the pin BD pin3. The device has very low power consumption. Do remember that this IC will be able to play only one datasheft, if you need a different tone you have to use a different IC with a different part number as shown above.
Ding Dong Sound Generator. Many versions of UM66T are available which generate tone of different songs. It is better that you should not run this circuit. Is capacitor helps in sound suppression in this circuit? I think the explanation i gave is enough to understand the circuit. In this circuit please don’t give the supply beyond 3 volt without modification as the IC may got damaged. You lf also like: Resistor R1 limits the base current of Q1 within the safe values. Powers the IC, typically with 3.
Previous post Next post. Choosing Motor For Robots. The volume of the sound of this circuit is so much that it can be used as a calling bell. SPI Module of Arduino. We have other Tone Generator circuits that you may like; Take a look: Interface GPS with Arduino.
Connection Diagram The connection diagram is shown below.
There is an inbuilt oscillator circuit that serves as a time base for beat and tone generator. Interface SD Card with Arduino. It is not possible to store our own music in UM