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Adapter to a multimeter for measuring the current transfer coefficient of the base of transistors. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Measuring technology

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Today, inexpensive digital multimeters such as M-830V are very popular. Unfortunately, they are inconvenient to measure the base current transfer coefficient (h21E) of transistors of the KT315, KT361 series. To get rid of this shortcoming, I made a connector (see figure) to the multimeter socket for measuring h21E. It consists of three plugs with extension conductors soldered to them.

Adapter to a multimeter for measuring the current transfer coefficient of the base of transistors

A contact plate is soldered to the other ends of the conductors, cut from an old cartridge of the Dandy prefix; it is unacceptable to make it from a piece of one-sided foil fiberglass. All solder joints should be insulated, the conductors twisted together, and the plugs should be marked with the appropriate letters.

Now, by connecting the adapter to the multimeter and attaching the transistor leads to the corresponding tracks of the contact plate, you can easily recognize its h21E.

Author: A.Antonov, Engels, Saratov region.

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