Step 1: PARTS:
2.Some button cells
3.A transistor (any type for testing)
6.A plastic case
Step 2: PROCESS:
Then insert the button cells into the case.
Now fix the copper wires to the case
...Now it is partially ready...
Red is negative and black is positive
Step 4: CIRCUIT:
Step 5: WORKING:
Step 1 - FINDING THE BASE and determining NPN or PNP Get an unknown transistor and test it with the verifier.Try the 6 combinations and when you have the black probe on a pin and the red probe touches the other pins and the led blinks, you have an NPN transistor. The black probe is BASE If the red probe touches a pin and the black probe produces a blink on the other two pins, you have a PNP transistor. The red probe is BASE
Step 7: Conclusion:
Its working,for better performance you can add a capacitor to it.
......HAVE A NICE VERIFIER......