How to Check a Transistor by Multimeter (DMM+AVO) – NPN & PNP – 4 Ways
Aug 15, · Steps to identify the PNP type transistor: Keep the Multimeter in the Diode mode. Keep the positive probe to the pin-1 (Emitter) of the transistor. Touch the negative probe to the center pin (Base). You will see some voltage in the multimeter. Similarly touch the negative probe to . Mar 23, · Connect the test leads to the transistor terminals. Keep test leads connected for a few seconds at like this (H) connection. Read the measurement displayed. If the transistor value is within the measurement range, the multimeter will display the transistor value.
Click image to enlarge. To do so, follow the instructions given below. Out of 6 tests, we got data and results only on two tests i. Where we got at points 2 to 1 is 0. Now, we can pnl find the type of transistor as well as their collector, base chcek emitter.
As mentioned in the above tutorial, the common number found in the tests above is base. In our case, 2 nd terminal is Base and 2 is common out of 1 -2 and 2- 3. P and yes, the cyeck two leads are Hkw which is base.
BC NPN. BC PNP. Here is the conclusion. If you do the reverse, i. Black -Ve test lead i. It also can be used to check a transistor and its pin terminal as shown in fig 1. Simply put the three pins of transistor in the multimeter slot one by one in different slots i. Conventional current flow geeks like engineers. Well then reverse it and think backwards.
The arrow points to the negative region. Induction motor? In first picture, Emitter and Collector should be reversed. Let us consider two things, 1. Current flows from positive P to negative N lnp P to N so now, PNP — positive transistoe outside and negative is inside Arrow comes from outside to inside NPN — positive is inside and negative is outside Arrow goes from inside to what is a ruddy complexion. Thanks for sharing such a beautiful article.
Please keep more sharing about PNP transistor. Your email address will not be published. Table of Contents. Remove the transistor from the circuit i. Discharge all the capacitor by shorting the capacitor leads in transistro circuit If any. Test, measure and note the display reading shown in the multimeter in the table below.
We have the following data from the table given below. Emitter or Collector? You have to perform 6 tests by connecting the Black -Ve test lead to 1 to 21 to 32 to 12 to 33 to 13 cueck 2 respectively by just replacing the multimeter test leads or reverse the transistor terminals to connect, test, measure and note the reading in the table shown below.
Note that, the result will be shown only for 2 tests out of 6 as mentioned above. In other words, the common number in tests is Base which is 2 out of 1, 2 and 3.
Electrical Technology 16 6 minutes read. Show More. Related Articles. Electric Bill Calculator with Examples. Step by Step Procedure with Solved Example. Leave a Reply Cancel reply Your email address will not be published. Check How to jailbreak the iphone 3g for free. Basic Electronics. Close Search for. Adblock Transkstor Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by disabling your ad blocker.
We depends on ad revenue to tranzistor creating quality content for you to learn and enjoy for free. Measuring Points.
Mar 19, · To check a transistor in hFE mode, there are 8 pins slot in the multimeter indicated by PNP and NPN as well as E C B (Emitter, Collector and Base). Simply put the three pins of transistor in the multimeter slot one by one in different slots i.e. ECB or CBE (Rotary knob should on hFE mode).
Almost everyone would have face this problem. Before proceeding further, let us refresh about how to identify the transistor terminals. We know that the Bipolar junction transistor has three terminals namely.
The transistors are available with various packages in the market. Let us discuss about the TO package.
Keep the transistor such that the flat surface facing towards you as shown in the below figure: Now starting from left, mark like 1,2 and 3.
They are respectively. We can not differentiate by seeing them. We need a multimeter to identify the type of BJT. How can we ensure that the transistors are in good condition and failed?.
Please read the post How to test transistor using Multimeter? How fluorescent lamp works? June 28, October 15, April 7, It mean collector is nearest to zero oum than emitter.. Thanks for informing and if possible crystal how to check by multimeter informarion ptovide so we learn.
This Information about transistor is very good. But some have CBE as respect series. This is confusion about pin out. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. This site uses Akismet to reduce spam. Learn how your comment data is processed. Almost everyone would have face this problem In this post, we will discuss about how to find out the NPN and PNP transistor using multimeter In the diode mode, the multimeter will show the voltage when we keep the positive probe of the multimeter to the anode of the diode and negative probe to the cathode.
If the multimeter positive probe is connected to the cathode of the diode and the negative probe to the anode, then it will not give any voltage showing zero. Keep the positive probe to the center pin Base of the transistor. Touch the negative probe to the pin-1 Emitter. You will see some voltage in the multimeter.
Similarly touch the negative probe to the pin-3 collector with respect to the pin It will ensure that it is a NPN transistor. The logic behind this is, in NPN transistor Emitter E - N type material - Equivalent to cathode of the diode Base B - P type material - Equivalent to anode of the diode Collector C - N type material - Equivalent to cathode of the diode If the multimeter positive probe is connected to anode and negative probe is connected to cathode, then it will show voltage.
If the connections are interchanged it will not show any value. Keep the positive probe to the pin-1 Emitter of the transistor. Touch the negative probe to the center pin Base. Similarly touch the negative probe to the center pin Base with respect to the pin-3 collector.
It will ensure that it is a PNP transistor. The logic behind this is, in PNP transistor Emitter E - P type material - Equivalent to anode of the diode Base B - N type material - Equivalent to cathode of the diode Collector C - P type material - Equivalent to anode of the diode If the multimeter positive probe is connected to anode and negative probe is connected to cathode, then it will show voltage.
You may also like to read: How fluorescent lamp works? Voltage Regulation Circuits October 15, Marcville says:. September 26, at am. Moroski says:. December 6, at am. Sean Smith says:. December 9, at pm. Daniel Sferlazzo says:. November 20, at am. December 16, at am. Felisi Buddy says:. January 25, at am. February 4, at am. Akeel says:. February 9, at am. Olivia says:. July 14, at pm. Siva says:. June 6, at pm. Ahmed says:. June 23, at am.
February 28, at am. Shehzad Wasim says:. March 9, at pm. May 20, at am. Jayesh unakar says:. May 31, at pm. Ben Bitok says:. June 13, at am. Eze Chukwuma says:. June 14, at pm. June 16, at am. Emmanuel E. July 8, at am.
August 21, at pm. September 6, at pm. Schadrack says:. September 22, at pm. Ranga Reddy says:. October 20, at pm. Richard says:. November 4, at am.
November 15, at am. Jaydeb says:. Andrew nyagawa says:. March 20, at pm. May 20, at pm. Evansmobela says:. June 25, at am. Qudratullah says:. June 30, at pm. Aman bharti says:. Lekayo Mugezi says:. July 28, at am. September 5, at am. Kaushal says:. December 11, at am. Nitin Patel says:.