Melody Generator using IC UM66
Description
Here is the simplest melody generator circuit you can make using an IC.The UM66 series are CMOS IC’s designed for using in calling bell, phone and toys. It has a built in ROM programmed for playing music. The device has very low power consumption.Thanks for the CMOS technology.The melody will be available at pin3 of UM66 and here it is amplified by using Q1 to drive the speaker.Resistor R1 limits the base current of Q1 within the safe values.Capacitor C1 is meant for noise suppression.
Notes
- Power supply must be between 1.5V & 4.5V .Do not exceed 4.5 V.
- Speaker can be driven with external NPN transistor.
- Melody begins from the first note if power is reseted.
- Assemble the circuit on a good quality common board.
- If transistor HE8050S is not available use any NPN transistor like BC548 or 2N2222.
Circuit Diagram.Click to Enlarge . UM66 Necessary Data.
pls
hi
Where can I find the UM66 IC to purchase?
Dear sir,
could you forward me a 30second sound circuit that activated by another speaker out(alarm clock)
Thanks
shyaman
by slightly modifying this circuit you can get the one you need.
http://www.circuitstoday.com/whistle-to-beep-circuit
(tips: modify the band pass filter, vary the mosostable’s delay to 30S)
If you cant do it yourself, comment here . i will give you the modified circuit.
i want the electronic copy (write up document) of this circuit by friday to complete my project work. it will help if you guys will sent every thing about this circuit
I think the explanation i gave is enough to understand the circuit.
The details about the IC can be found here http://www.circuitstoday.com/wp-content/uploads/2009/03/um66.pdf
Still not satisfied?????
then comment here.
I will help you.
i want data sheet about the working of um66?
Data sheet of UM66 is there in the datasheet section of the site.
http://www.circuitstoday.com/wp-content/uploads/2009/03/um66.pdf
UM66 is a 3 pin melody device. once the supply is given to pin 1 & 2 it will give continuous audio out put at pin3, which is not sufficient to drive a loud speaker, hence an additional direct coupled amplifier is added to drive a small speaker.
is it possible to store our own created music into um 66 if yes , how to store it… what circuit can be used. if not can any one tell me a nice way to “Design a circuit to create, play and save ringtones”
It is not possible to store our own music in UM66.
I will add a voice recorder circuit soon.
is it possible to store our own created music into um 66 if yes , how to store it… what circuit can be used. if not can any one tell me a nice way to “Design a circuit to create, play and save ringtones”
Vignesh
Like Admin has stated, UM66 is designed and manufactured with those melodies. You can not reprogramme it. You need a voice recorder circuit interfaced with a amplifier circuit.
sir, i’m b.tech student i would like know working and storing own music by using UM 66