Um66 Ic Circuit Diagram. When the power supply circuit is currents flowing through led1 led1 light and the electricity flowing into pin 2 of ic1 ic1 make music production work. This ic with its three legs looks like a transistor.
The ic works on a supply voltage range of 1 5 4 5 volts. Here is a project of a 555 touch alarm circuit with um66 melody ic. So you ve to take care of the voltage across the pin 2 and pin 3 of um66t and the rest is easy.
You need very few components to make this circuit.
All you have to do is reset the ic using switch s1. Um66 has an inbuilt beat and tone generator. There are up to 14 versions of this ic each version contains a. The circuit will produce a melodious alarm sound for a set time period when someone touches the metal plate touch plate shown in the schematic and after the set time period is over the circuit will goes off automatically.
