Water Level Indicator Using Transistor BC547
Component:
1.Transistor BC 547
2.4* Led
3.5 Volt Battery
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Sir,
Mujhe automatic motor starter on and off
Ka circuit diagram batao.
Plz.
Water level indicator circuit using transistor bc547 and 220 ohm resistors. I want the calculation details of selection of 220 ohm resistors and 9v power supply