What are the different ways to check LED light/bulb?
Answers were Sorted based on User's Feedback
Answer / aziz
1. By using multimeter.
2. By Continuity tester.
3. Battery.
4. DC adapter.
5. By AC current with resistor.
| Is This Answer Correct ? | 16 Yes | 1 No |
Answer / chary
1. LED polarity can be checked by observing the terminals
usually longer lead is positive.
2. LED can be tested by Multimeter (digital or Analogue)
DMM should be kept in diode test mode by observing the
polarity .
meter indicates the drop ( !V to 2.7 V) depending on LED
colour . whem terminals are reversed should not indicate.
this confrms LED is good
3.When using analog multimeter keep range selector in
lowest Resistance range . in analog multimeters in
resistance mode the -ve or black wire should be treated as
+ve lead
4. LED can also be tested by connecting it to a 3v Battery /
AC adapter with a resistor(1K to 10K )connected in series
| Is This Answer Correct ? | 1 Yes | 1 No |
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Alok and Bhanu play the following min-max game. Given the expression N = 9 + X + Y - Z Where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be 27 0.0 20 18
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