How many ohms resistance shold be put in a electrical tester. Can LED replace the bulb in tester. I?

Question

If yes then is diode reqd. in parallel or series

Answer 1

Not enough info. What kind of tester, what bulb, what circuit is bulb in? Etc. What voltage does bulb need to light? A led can replace most bulbs in many aplications but I need a lot more info before I could answer your question. If all else fails feel free to email me via my profile and I will help as best as I can.

I won't advertise here so I don't post my URL on Y/A.

Answer 2

What do you mean? The LED will glow when theres a "continuity" between two terminals. And if there is a resistance, you can read the value in ohms. My tester don't have that LED continuity indicator but I remembered that even in higher resistance the glow and brightness of the LED does not change. The LED is connected in a transistor switch. So even if you pull out the LED you can still test for continuity and it does not alter the tester's reading...

I'm sorry I just figure out that you are refering to a different tester, not a multitester. I don't know if it is LED since we can also use it in alternating current, and LED don't normally work on AC and if it is LED you will need a diode in series and a dropping resistor depending on the voltage rating of the LED. Use ohms law..