Melody Generator Circuit using IC UM66

In this easy challenge, we are going to make a Melody Generator Circuit using IC UM66. This ic (um66) has an built in beat and tone generator. It has 3 legs like a transistor. This ic (um66) has many variations with specific sounds. This circuit may be very beneficial for primary interest college students. Melody generator circuit

melody generator circuit description

the um….. Series are designed for using in calling bell, mobile phones, and toys. It has built-in rom applications for track. This tool has very low electricity intake. The melody is generated at pin 3 of um66 ic and right here it’s far amplified via the use of a transistor (t1) to force the speaker. This will generate music with out transistors but the voice will b very low. Resistor r1 limits the bottom modern of t1 in the safe values. Capacitor (c1) is meant for noise suppression.

Um66 melody genrator ic

while the usage of this simple melody generator circuit following things ought to be in mind. Do no longer exceed four. 5 v. Power supply should be between 1. 5v & four. 5v. For loud melody, speaker can be driven with an external npn transistor. The melody starts from the first if energy is reset. For higher result circuit must be on a good best not unusual board. Melody may be generated without a transistor.


capacitor 1uf 16v
um66 ic
speaker /buzzer
resistor four. 7k
electricity supply – 1. 5-four. 5v dc
bc 547 or any npn transistor

Melody Generator Circuit using IC UM66

circuit diagram without transistor

the circuit may be used without any greater transistor. Music may be generated the use of the ic. Anyways, the transistor is used to make melody in loud voice. The circuit diagram with none transistor is given under. Melody generator without transistor

circuit diagram of melody generator circuit

on this circuit, we’ve got used an extra transistor and a commonly used transistor. Melody generator the usage of ic and transistor

running of melody generator circuit

the running of the circuit is quite simple. We’ve used um66 a happy birthday tone generator ic in the circuit and you can trade with another ics in the given under list. The working voltage of the circuit is round 1. Five to 4. 5v dc, so we’ve used a 3v battery to strength the circuit given above. The output of this ic changed into then fed into the base of the transistor bc547 to drive the speaker linked to the collector of the transistort1. Here a transistor bc547 works best and a r1 four. 7k resistor is used to limit the current to the base of the transistor t1.

Ic um66txx collection:

the um66txx series is designed mainly for generate melody, tone era circuits. It consists of a chip rom programmed with a particular or tone. The ic um66txx consumes low electricity because it changed into produced by way of cmos technology. Last two digits of ic designated tone/ melody. The list of some common tone generator ic and their equivalent numbers. Um66t01 – jingle bells, santa is coming to town, and we want you a merry yuletide
um66t02 – jingle bells
um66t04 – jingle bells, rudolph the crimson-nosed reindeer, and pleasure to the arena
um66t05 – domestic candy domestic (a pleasing melody)
um66t06 – allow me name you sweetheart
um66t08 – glad birthday 2 you
um66t09 – wedding march
um66t11 – love me tender and love me actual
um66t13 – easter paradise
um66t19 – for elise
um66t32 – waltz
um66t33 – mary had a touch lamb
um66t34 – the educate is going for walks rapid
um66t68 – it’s miles a small global