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How to build Music Generator Schematic Using UM66

2018-11-15 21:29  
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UM66 is a pleasing music generator IC which works on a supply voltage of 3V. the required 3V supply is given through a zener regulator. its out put is taken from the pin no1 and is given to a push pull amplifier to drive the low impedance loud speaker. A class A amplifier before push pull amplifier can be used to decrees the noise and improve out put. UM66 is a 3 pin IC package just looks like a BC 547 transistor.

Circuit diagram:

Music Generator Schematic Using UM66-Circuit diagram


R1 = 4.7KC1 = 10uF-25vD1 = 3.3v ZenerQ1 = SK100Q2 = SL100IC = UM66SP = 8 ohm

Pin out of UM66 IC:

Output----Melody OutputVdd-----Positive power supply-Vss------Negative Power supply

Features of UM66T series:

62 Note ROM MemoryVoltage rating: 1.3V to 3.3 VPower on reset

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