UM66 is a type of circuit used in electronics. It can be replaced with BT66 if a replacement is needed.
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what is the function of ic UM66.plz tel me
ic um66 is a melody generator with 3 terminals (1-o/p, 2-vcc,3-grnd)
The UM66 is an electronic doorbell. It requires a button for the door, a single transistor, a battery and a speaker.
use two of them for 8 bits.
A: The gain of a transistor is not linear and even that varies from component to component. The gain can vary greatly depending on the Ic current and the load. Manufactures only give out a typical gain for a particular current. As a rule the lower the Ic current the higher the gain. To really find out what a particular transistor characteristics are a tektronik curve tracer is used.