Equipments - eTechnophiles Forum

SSD Solution Available

laborasphere — Mon, 22 Sep 2025 21:52:46 +0000

SSD Solution Available

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testduolingo6 — Thu, 04 Sep 2025 14:08:45 +0000

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How to Test a Potentiometer with a Multimeter?

electronic_God — Mon, 11 Aug 2025 06:26:34 +0000

In my college lab, there are a lot of potentiometers, and I want to check which ones are still in good condition before using them in circuits. I have access to a standard digital multimeter but i dont know whats the correct procedure for testing them. Also, how can I tell if the potentiometer is faulty or worn out?

Suggestions for a Handheld or Compact Oscilloscope?

PCBChronicles — Tue, 05 Aug 2025 04:38:57 +0000

I’ve mostly used benchtop oscilloscopes available in my college lab, but now I’m looking to buy a portable oscilloscope that I can easily carry around for on-site testing and general electronics work. Portability is important to me, but I don’t want to compromise too much on performance or usability.

Can anyone recommend a good portable oscilloscope—either handheld or tablet-style—that offers a decent balance of features, screen quality, and reliability? I’d prefer something with at least 2 channels, good battery life, and support for basic measurements like voltage, frequency, and waveform capture. Budget is flexible, but I’d like to hear about both affordable and mid-range options.

Would love to know what models you’ve used, what you liked or didn’t like, and any tips for choosing the right one.

Measuring a transformer with an oscilloscope

lukeluke — Wed, 30 Jul 2025 23:33:28 +0000

Is there any problem to measure a transformer with an oscilloscope? I’ve heard that one should take care with short circuits or ground short circuits otherwise the oscilloscope would burn out.

Multimeter continuity beeps with no contact — false positives?

CircuitFlow — Tue, 15 Jul 2025 05:37:58 +0000

Hi everyone,

While checking continuity with my multimeter, I sometimes get beeping sounds even when the probes aren’t actually touching the wires.
It seems like a false reading.
Could this be due to stray capacitance, interference, or a faulty meter?

Is it safe to use the multimeter’s amp setting on live circuits?

techy ishan — Sat, 12 Jul 2025 07:04:07 +0000

I’ve seen warnings about using the current (amp) setting on a multimeter, and I want to be cautious. I understand that to measure current, the meter has to be placed in series with the load. But I’m unsure about the risks involved when doing this on a live circuit, especially with higher voltages like AC mains or even 12V DC systems with decent current. Is it safe to switch to the amp mode while the circuit is powered?

How to Measure Capacitance with a Multimeter?

Techyguy — Tue, 24 Jun 2025 05:59:10 +0000

I have a digital multimeter that includes a capacitance measuring mode, but I'm not exactly sure how to use it properly. Do I need to discharge the capacitor first? Also, are there any tips for getting accurate readings or avoiding mistakes when measuring capacitors with a multimeter?

What does it mean to “set the trigger” on an oscilloscope?

Nitin arora — Fri, 20 Jun 2025 08:47:13 +0000

I'm troubleshooting a communication circuit and often hear people say to “set the trigger” on the oscilloscope. I’m confused—what’s the difference between just connecting the scope and actually setting the trigger? What does the trigger do, and how does it help in viewing signals properly?

Can measuring current the wrong way damage my multimeter?

Bhavish — Thu, 19 Jun 2025 05:29:11 +0000

If I accidentally measure current like voltage (i.e., in parallel), can it damage my multimeter? Also, what happens if I leave the probe in the current port and try to measure voltage? Just want to avoid any common mistakes.