Multimeter use how to test TRANSISTOR and how to test electronic components

Multimeter use how to test TRANSISTOR with Digital Multimeter

TRANSISTOR TESTING Transistor has 3 legs , namely , base collector and emitter , construction of transistor has 2 PN junction. This article will use diode concept to conduct transistor testing. NPN transistor use 2 diode concept to make it easily to understand the testing and these diode is common anode connected ( note it is not the actual equivalent circuit just for testing concept purpose)

HOW TO TEST TRANSISTOR

NPN transistor use 2 diode to explain testing concept .

NPN transistor use 2 diode , common anode , to explain testing concept

NPN Transistor Symbol

PNP transistor use 2 diode to explain testing concept .

PNP transistor use 2 diode , common cathode , to explain testing concept .

PNP transistor symbol

Step to test transistor using digital Multimeter
( use Diode Function )
1. Find transistor leg function from its datasheet.
2. Set digital multimeter to diode test function.

Resistor color code and its reading example set 2

Read resistor color code from R label

These are example of resistor color code 5 band , 330 Ohm 27 Ohm 33 Ohm 150 Ohm 270 Ohm and more. For reference and double check the value of resistor including learning how to read resistor color code 5 band from real resistor photo. It has label from factory to ensure the right value.

1) 27 Ohm resistor color code metal film 1W ± 1%.
Red violet black gold brown
2 7 0 x 0.1 ± 1% = 27 Ohm ± 1%

2) 33 Ohm resistor color code metal film 1W ± 1%.

Oragne orange black gold brown

3 3 0 x 0.1 ± 1% = 33 Ohm ± 1%

3) 39 Ohm resistor color code metal film 1W ± 1%.

Oragne white black gold brown

3 9 0 x 0.1 ± 1% = 39 Ohm ± 1%

4) 56 Ohm resistor color code metal film 1W ± 1%.

Green blue black gold brown

5 6 0 x 0.1 ± 1% = 56 Ohm ± 1%

5) 75 Ohm resistor color code metal film 1W ± 1%.

Violet green black gold brown

7 5 0 x 0.1 ± 1% = 75 Ohm ± 1%

Test multimeter read resistor color code

6) 150 Ohm resistor color code metal film 1W ± 1%.

Brown green black black brown

1 5 0 x 1 ± 1% = 150 Ohm ± 1%

7) 200 Ohm resistor color code metal film 1W ± 1%.

Red black black black brown

2 0 0 x 1 ± 1% = 200 Ohm ± 1%

8) 270 Ohm resistor color code metal film 1W ± 1%.

Red violet black black brown

2 7 0 x 1 ± 1% = 270 Ohm ± 1%

9) 330 Ohm resistor color code metal film 1W ± 1%.

Oragne Orange black black brown

3 3 0 x 1 ± 1% = 330 Ohm ± 1%

10) 390 Ohm resistor color code metal film 1W ± 1%.

Oragne white black black brown

3 9 0 x 1 ± 1% = 390 Ohm ± 1%

11) 470 Ohm resistor color code metal film 1W ± 1%.

Yellow violet black black brown

4 7 0 x 1 ± 1% = 470 Ohm ± 1%

12) 560 Ohm resistor color code metal film 1W ± 1%.

Green blue black black brown

5 6 0 x 1 ± 1% = 560 Ohm ± 1%

13) 750 Ohm resistor color code metal film 1W ± 1%.

Violet green black black brown

7 5 0 x 1 ± 1% = 750 Ohm ± 1%

14) 2K Ohm resistor color code metal film 0.5W ± 1%.

Red black black brown brown

2 0 0 x 10 ± 1% = 2000 Ohm ± 1% = 2K Ohm ± 1%

15) 3.6K Ohm resistor color code metal film 0.5W ± 1%.

Orange blue black brown brown

3 6 0 x 10 ± 1% = 3600 Ohm ± 1% = 3.6K Ohm ± 1%

16) 47K Ohm resistor color code metal film 0.5W ± 1%.

Yellow violet black red brown

4 7 0 x 100 ± 1% = 47000 Ohm ± 1% = 47K Ohm ± 1%

17) 1.5M Ohm resistor color code metal film 0.5W ± 1%.

Brown green black green brown

1 5 0 x 100000 ± 1% = 15000000 Ohm ± 1% = 1.5M Ohm ± 1%

18) 2.2M Ohm resistor color code metal film 0.5W ± 1%.

Red red black green brown

2 2 0 x 100000 ± 1% = 22000000 Ohm ± 1% = 2.2M Ohm ± 1%

19 ) 10M Ohm resistor color code metal film 0.5W ± 1%.

Brown black black green brown

1 0 0 x 100000 ± 1% = 10000000 Ohm ± 1% = 10M Ohm ± 1%

Topics to read more.

How to test SCR with multimeter

https://www.testmultimeter.com/2021/11/multimeter-use-how-to-test-scr.html

How to test TRIAC

https://www.testmultimeter.com/2021/11/multimeter-use-how-to-test-triac.html

How to test Mosfet

https://www.testmultimeter.com/2021/11/multimeter-use-how-to-test-mosfet.html

Test IGBT Part 1

https://www.testmultimeter.com/2021/11/multimeter-use-how-to-test-igbt.html

Test IGBT Part 2

https://www.testmultimeter.com/2020/12/test-igbt-with-multimeter-bad-or-good.html

Test SCR Module

https://www.testmultimeter.com/2020/12/test-scr-thyristor-module-with.html

Test IGBT Module

https://www.testmultimeter.com/2020/12/how-to-to-test-igbt-module-with.html

1 Ohm 10 Ohm 100 Ohm 1000 Ohm 1K 10K 47K resistor color code and more example

Resistor color code and its reading example set 1

These are resistor color code of 1 Ohm 2 Ohm 10 Ohm 100 Ohm 1000 Ohm 1K Ohm 10K Ohm 100K 47K Ohm 1M and more. Some resistor on PCB damaged and we need the right information to compare and find the replacement. You can use this photo to double check value of the damage resistor , the photo is big and with label for reference.

1) 1 Ohm resistor color code metal film 1W ± 1%.
brown black black silver brown
1 0 0 x 0.01 ± 1% = 1 Ohm ± 1%

2) 2 Ohm resistor color code metal film 1W ± 1%.

Red black black silver brown

2 0 0 x 0.01 ± 1% = 2 Ohm ± 1%

3) 10 Ohm resistor color code metal film 1W ± 1%.

Brown black black gold brown

1 0 0 x 0.1 ± 1% = 10 Ohm ± 1%

4) 100 Ohm resistor color code metal film 1W ± 1%.

Brown black black black brown

1 0 0 x 1 ± 1% = 100 Ohm ± 1%

5) 1K Ohm resistor color code , 1K or 1000 Ohm metal film 0.5W ± 1%.

Brown black black blown brown

1 0 0 x 10 ± 1% = 1000 Ohm ± 1% = 1K Ohm ± 1%

6) 10K Ohm resistor color code , metal film 0.5W ± 1%.

Brown black black red brown

1 0 0 x 100 ± 1% = 10000 Ohm ± 1% = 10K Ohm ± 1%

7) 100K Ohm resistor color code , metal film 0.5W ± 1%.

Brown black black orange brown

1 0 0 x 1000 ± 1% = 100000 Ohm ± 1% = 100K Ohm ± 1%

8) 47K Ohm resistor color code , metal film 0.5W ± 1%.

Yellow violet black red brown

4 7 0 x 100 ± 1% = 47000 Ohm ± 1% = 47K Ohm ± 1%

9) 1M Ohm resistor color code , metal film 0.5W ± 1%.

Brown black black yellow brown

1 0 0 x 10000 ± 1% = 1000000 Ohm ± 1% = 1M Ohm ± 1%

10) 0.1 Ohm resistor color code , metal film 1W ± 1%.

Black brown black silver brown

0 1 0 x 0.01 ± 1% = 0.1 Ohm ± 1%

11) 0.5 Ohm resistor color code , metal film 1W ± 1%.

Black green black silver brown

0 5 0 x 0.01 ± 1% = 0.5 Ohm ± 1%

12) 0.33 Ohm resistor color code , metal film 1W ± 1%.

Black orange orange silver brown

0 3 3 x 0.01 ± 1% = 0.33 Ohm ± 1%

13) 2.7 Ohm resistor color code , metal film 1W ± 1%.

Red violet black silver brown

2 7 0 x 0.01 ± 1% = 2.7 Ohm ± 1%

14) 3.3 Ohm resistor color code , metal film 1W ± 1%.

Orange orange black silver brown

3 3 0 x 0.01 ± 1% = 3.3 Ohm ± 1%

15) 3.9 Ohm resistor color code , metal film 1W ± 1%.

Orange white black silver brown

3 9 0 x 0.01 ± 1% = 3.9 Ohm ± 1%

16) 4.7 Ohm resistor color code , metal film 1W ± 1%.

Yellow violet black silver brown

4 7 0 x 0.01 ± 1% = 4.7 Ohm ± 1%

17) 5.6 Ohm resistor color code , metal film 1W ± 1%.

Green blue black silver brown

5 6 0 x 0.01 ± 1% = 5.6 Ohm ± 1%

18) 7.5 Ohm resistor color code , metal film 1W ± 1%.

Violet green black silver brown

7 5 0 x 0.01 ± 1% = 5.6 Ohm ± 1%

19) 15 Ohm resistor color code , metal film 1W ± 1%.

Brown green black gold brown

1 5 0 x 0.1 ± 1% = 15 Ohm ± 1%

20) 20 Ohm resistor color code , metal film 1W ± 1%.

Red black black gold brown

2 0 0 x 0.1 ± 1% = 20 Ohm ± 1%

Read more topics of testing , from here.

30 testing of electronic devices

Multimeter use how to test SCR electronic components testing

Multimeter use how to test SCR Digital multimeter or Analog Multimeter

SCR TESTING SCR has 3 legs , namely , Anode Cathode and Gate , we can use both Digital multimeter and Analog Multimeter to test SCR. This article will present the step to test. The sample SCR to test on this article has pin function K A G ( terminal 1 2 3 respectively ) , the SCR part number is TYN610.

HOW TO TEST SCR

Sample SCR has K A G ( pin 1 2 3 respectively )

Step to test SCR with Digital multimeter.
1. Take part number to find leg function from datasheet.
2. Set digital multimeter to resistance test function.
3. Connect test lead to A and K leg.
4. Test A and K leg then switch the test leads and do testing again.

Multimeter use how to test TRIAC with Digital multimeter Analog multimeter

TRIAC TESTING Triac has 3 legs , T1 T2 G and some datasheet named as A1 A2 G and some datasheet named as MT1 MT2 G. You can use analog multimeter or digital multimeter to test good Triac or bad Triac. This article will explain the step to test.

testing electronic components with multimeter

HOW TO TEST TRIAC

Step to test Triac with Digital multimeter.
1. Take triac part number to check with datasheet and find pin function.
2. Set digital multimeter to resistanc test function.
3. Test T1 and T2 leg then switch test leads and do testing again.

How to test MOSFET with multimeter

Multimeter use how to test MOSFET with Digital Multimeter and Analog Multimeter

MOSFET TESTING Mosfet working principle is input voltage control output current , we can use basic bias to test whether it is a bad or good mosfet . Mosfet has Gate Drain and source legs , take part number to find leg function from datasheet then connect test leads as photo. Note analog multimeter on this testing when set to resistor test function or Ohmmeter , the black test lead supply V+ and the red test lead supply V- ; the reason is the black test lead is connected with positive polarity of internal battery and the red test lead is connected with negative polarity of internal battery. If you are unsure about polarity of your multimeter test leads , you can check it with multimer manual or ask the multimeter expert.

HOW TO TEST MOSFET

Connection diagram to test MOSFET with Analog Multimeter.

Step to check MOSFET with Analog Multimeter.

1. Set analog multimeter to Rx10K as this range the multimeter will supply 9VDC from internal battery. 9VDC is high enough to bias gate leg so mosfet is working as ON state.
2. Discharge mosfet by shorting or connecting 3 leg together by using resistor's leg. then do not touch the legs.
3. Connect test leads with mosfet leg as photo above
4. Use resistor's leg to temporarily connect between G leg and D leg ; the pointer of multimeter move to indicate some resistance on ohm's scale as photo.
5. After removing resistor's leg from mosfet's leg the pointer can hold the same position.

Test electronic components with multimeter.. 50 test