Understanding hFE Option in Multimeters: Transistor Efficiency, N-Channel/P-Channel Detection

Konan Marian wrote:

I know the hFE [...] shows whether they are n-channel or p-channel.

Quote:

In every PDF with the description of the transistor you will find that this parameter is very scattered for the same model, e.g. for BC548 from 110 to 800.

Moderated By trymer01:

Regulations, point 3.1.19 Do not send messages on archival topics if it is another question, in particular other than the questioning person. Out of respect for the questioner, create your own topic. You can only add a solution to the problem.

szyszko wrote:

Hello,

IN PRACTICE I mainly use the beta-meter to pair the so-called complementary pairs of PNP and NPN with low frequency amplifiers (audio power amplifiers). Also, most often, when connecting, for example, 2-3 pieces of transistors in stabilized power supplies (increasing the output current of the stabilizer), because it significantly reduces the amount of heat power lost and causes that all heat up in the same way, because the theoretically calculated value of "equalizing" resistors it is the same for all transistors in the circuit.
Unfortunately, even with the same series / batch of the same transistors, the discrepancy of their parameters can be quite large, so if you have such a possibility, you can sort, for example, from a 100 pack 10 of those that most correspond to the values given in the manufacturer's catalog.
As professional digital beta meters are quite expensive, I personally prefer the old vg. analog (pointer) meters, which are only used to measure transistors, because it is then possible to set the most appropriate measuring range, and moreover, they can be used to measure not only hFE.

greetings

Moderated By Madrik:

3.1.19. Do not send messages on archival topics if this is another question, in particular other than the questioning person. Out of respect for the questioner, create your own topic. You can only add a solution to the problem.