There is a new method for measuring transistor 2

To determine the quality of a transistor, simply check if each PN junction of the transistor is damaged, and measure the forward and reverse voltages of its emitter and collector using a multimeter to determine. If the measured forward voltage is similar to the reverse voltage and almost zero. Or if the forward voltage is' OL ', it indicates that the transistor has short circuited or broken.

How do you feel now! Compared to measuring a transistor using the resistance method, which one is more satisfying?

Attachment: After testing, it has been found that A1078, C3332, C9545, A73339043906, and 90 series transistors such as 901190129013901490159016018 are suitable for the above measurement methods.

<2> The tested transistors are all packaged in TO-92. The experimental environment is correct under conditions ranging from 5 degrees to 35 degrees.

<3> The term 'OL' in the text refers to a fixed symbol that appears when a multimeter cannot display numbers properly. The type of fixed symbol that appears depends on the brand of multimeter used. For example, some multimeters will display a fixed symbol "l".

<4> A1078,C3332,C9545,N222A,A733, The middle pin of these five transistors is the "C" pole.

39043906 and 90 series transistors, with the middle pin being the "B" pole.