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Musical Calling Bell
By Kalyan Prodhan www.
kalyan-prodhan.
tk
Connection Diagram Component List with cost (Approximate) Component Description (IC and
Transistor) Precaution Modification for adaptation
This is the simplest ever musical calling bell that can be easily built.
It uses the musical 3 pin IC UM66 and a popularly known
Transistor BC548b.
The circuit can be made even without soldering and the ideal for the first electronic project for newbies.
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 BC548b.
Description:
UM 66
Fig-1 : Connection Diagram The connection di...