Electrolytic Capacitor Transistor Tester

Gunawathy, Muthusamy (2005) Electrolytic Capacitor Transistor Tester. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Normally student or users will use multimeter to find out about capacitor whether it is in good condition, its value, its polarity and any faulty current leakage if occurs. As with transistor, multimeter is used to check for the transistor type, PNP or NPN, and to determine its condition for any current leakage. However, the reading from multimeter might 111ot be accurate because of some error might exist such as reading error, parallax error and so on. The purpose of this project is to simplify any laboratory work. This circuit combined because this particular method can reduce component to create power supply, reduce cost and space in laboratory station. It is more convenient to make combine circuit then separate because multitester capacitor and transistor tester can reduce the power dissipation on voltage regulator. When the capacitor is inserted to the capacitor tester,. the display, which is seven segments, will show the value, any faulty current leakage and the polarity. The transistor circuit tester is used to ensure either the transistors PNP or NPN type and check the condition. The LED indicator can observe the result. There is six LED available to show the particular transistor is PNP or NPN. If particular transistor is NPN only a pair of green LED lights up. If it is PNP type, only a pair of red LED lights up. There will be two separate circuits consists of transistor checker and capacitor tester. These two circuits will be combined together is one single board. This will finally simplify testing method and minimized equipment needed in laboratory station.

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