Hi I recently bought my first meter, the cheapest one for PLN 20 and I don't understand only one function. At the bottom left there is a function called hFE and there is a socket for it marked BC E. I know it has something to do with transistors, but what? This is my first post on this forum...

HFE is a measurement of transistor gain. The meter applies a constant voltage to the base, say 10mV, and to the emitter a higher voltage, say 10V, and measures the collector voltage. HFE is the gain, i.e. the number of times the collector voltage is greater than the control voltage at the base. I hope you understood

If I'm not mistaken, hFE is the gain factor (beta) of the transistor (sounds scary, doesn't it?). At least that's what I was told, a long, long time ago, and then I wasn't interested in it and never used it, so I'm not sure. This is probably used to pair transistors. Regards Luke. PS: I've been in this for so long and I don't know 100% what it is... Shame Mr. dee jay G, shame.

This is the current gain of the transistor. It is the ratio of the collector current to the base current and determines the current gain of the transistor. If, for example, 1mA flows through the base to the emitter and 1A through the collector, the hFE is 1000. Do not mix this voltage! A bipolar transistor is an amplifying element current controlled! unlike lamps and field effect transistors which are voltage controlled.

So if it is 10mV base and 10V emitter then this gain will be 1000?

Thank you very much, now everything is clear (I think I just need to read up on the theory now. This forum is just great, a few minutes and I got help Too bad I got here so late.

Sorry about the tension but i got it

What is the transistor hFE parameter?

banem 26307 6

Treść została przetłumaczona

Zobacz oryginalną wersję tematu

| New topic

#1 2050796 03 Dec 2005 21:07

banem banem

Level 2

» |

Post #1
2050796 03 Dec 2005 21:07

Hi

I recently bought my first meter, the cheapest one for PLN 20 and I don't understand only one function. At the bottom left there is a function called hFE and there is a socket for it marked BC E. I know it has something to do with transistors, but what? This is my first post on this forum so please be patient.
ADVERTISEMENT
Helpful post

#2 2050817 03 Dec 2005 21:12

xHaKeReK xHaKeReK

Level 20

» | Helpful post? (+3)

Helpful post
Post #2
2050817 03 Dec 2005 21:12

HFE is a measurement of transistor gain. The meter applies a constant voltage to the base, say 10mV, and to the emitter a higher voltage, say 10V, and measures the collector voltage. HFE is the gain, i.e. the number of times the collector voltage is greater than the control voltage at the base. I hope you understood
ADVERTISEMENT
Helpful post

#3 2050827 03 Dec 2005 21:14

dee jay G dee jay G

Level 26

» | Helpful post? (+1)

Helpful post
Post #3
2050827 03 Dec 2005 21:14

If I'm not mistaken, hFE is the gain factor (beta) of the transistor (sounds scary, doesn't it?).
At least that's what I was told, a long, long time ago, and then I wasn't interested in it and never used it, so I'm not sure. This is probably used to "pair" transistors.

Regards
Luke.

PS: I've been in this for so long and I don't know 100% what it is... Shame Mr. dee jay G, shame.
ADVERTISEMENT
#4 2050836 03 Dec 2005 21:17

banem banem

Level 2

» | Topic author Helpful post? (+1)

Post #4
2050836 03 Dec 2005 21:17

So if it is 10mV base and 10V emitter then this gain will be 1000?
ADVERTISEMENT
Helpful post

#5 2050845 03 Dec 2005 21:21

Pi-Vo Pi-Vo

Level 37

» | Positive voted Helpful post? (+8)

Helpful post
Post #5
2050845 03 Dec 2005 21:21

This is the current gain of the transistor. It is the ratio of the collector current to the base current and determines the current gain of the transistor. If, for example, 1mA flows through the base to the emitter and 1A through the collector, the hFE is 1000. Do not mix this voltage! A bipolar transistor is an amplifying element current controlled! unlike lamps and field effect transistors which are voltage controlled.
#6 2050877 03 Dec 2005 21:30

banem banem

Level 2

» | Topic author Helpful post? (+1)

Post #6
2050877 03 Dec 2005 21:30

Thank you very much, now everything is clear (I think I just need to read up on the theory now. This forum is just great, a few minutes and I got help Too bad I got here so late.
#7 2050954 03 Dec 2005 21:55

xHaKeReK xHaKeReK

Level 20

» | Helpful post? (+2)

Post #7
2050954 03 Dec 2005 21:55

Sorry about the tension but i got it
Create an account, log in and become active in a forum and ads will not appear. You will receive points by participating in discussions.
Join this discussion.

Install the application

Didn't find an answer? Ask Artificial Intelligence

*I agree to send the question to OpenAI, Anthropic PBC, Perplexity AI, Inc., Kagi Inc., Google LLC - owners of language models in order to prepare the best response. The companies may monitor and log information entered into the form.

*I agree to publicly display my question and answer. The question and answer will be publicly available to everyone. The process may take a few minutes. Upon completion, you will be redirected to the page with the answer.

Wait...(2min)

| New topic

Report a violation of the law

Topic summary

The hFE parameter, also known as the current gain or beta of a transistor, measures the ratio of collector current to base current. It indicates how much the transistor amplifies the input signal. For example, if 1mA flows through the base and 1A through the collector, the hFE would be 1000. The measurement is performed using a multimeter that applies a constant voltage to the base and emitter, allowing users to determine the transistor's gain. Understanding hFE is essential for pairing transistors in electronic circuits.
Summary generated by the language model.

What is the transistor hFE parameter?

Didn't find an answer? Ask Artificial Intelligence

Topic summary