Above are the picture for the PN 100. This device is designed for general purpose amplifier applications at collector currents to 300 mA. This transistor are working together with the 555 timer to detect the mains fails and also act as the trigger for the 555 timer which is also IC1.We could not find the transistor. There are several number type of transistor suggested by the electronic dealer which is MCR100, BC639 and C9013. We have to do some research before proceeding.
Project Circuit Diagram
Figure above are the circuit diagram for the project. The transistor PN100 was labeled Q1,Q2 and Q3.
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