Fnirsi

Fnirsi Welcome to FNIRSI. Break the Norm, Technology Within Reach. Discover more: www.fnirsi.com

We craft innovative tools for testing, measuring, and understanding electronics
— empowering engineers, technicians, and makers around the world.

07/09/2026

It was punctured, folded, and cut… but the meter still showed voltage.

The FNIRSI HRM-10 recorded each stage of this solid-state lithium battery test, with readings staying near 3.9–3.99 V and roughly 5.6–7.0 mΩ.
No immediate smoke or fire doesn’t mean the damaged battery is automatically safe. That contrast is why voltage alone never tells the whole story.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4ilAog1
$7.81 OFF! 🔥 code: HRM10781
🛒 Amazon: https://fnirsi.top/4gJO9Sy

Which surprised you more—the voltage or the internal-resistance reading?
Destructive test footage. Do not attempt.

05/09/2026

Why do electronics repair technicians still need an oscilloscope if they already have a multimeter?

A multimeter is useful for checking basic DC or AC voltage, but it gives you a reading rather than the actual shape of a changing signal.

The FNIRSI 2C53T features a dual-channel 50MHz oscilloscope and 250MS/s sampling rate, allowing you to observe fast circuit signals as waveforms and analyze changes in real time.

You can also save a waveform screenshot and review it later when the signal is difficult to interpret on the spot.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/3UTwTU7
$18.24 OFF! 🔥 code: 53T18
🛒 Amazon: https://fnirsi.top/49c4pbC

How do you usually decide when a multimeter isn't enough?

04/09/2026

Ever stared at a power supply board and had no idea what half the parts do?

Every switching PSU follows the same four stages — rectify and filter the input, switch it with PWM control, step it down through a transformer, filter the output. This one traces a real 60V 5A board through all of it.

Great for repair techs, EE students, or anyone learning to read a board.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/3UApDMM
$15 OFF! 🔥 code: DPS1515
🛒 Amazon: https://fnirsi.top/4737f2U

Save this for your next circuit study session 🔧

03/09/2026

Not every clamp meter needs the same feature set. ⚡

For mostly AC work, MC40 is a practical choice. If DC current is part of the job—like automotive repair—DMC100 adds AC/DC current, live power, trend graphs, capacitance, temperature, and frequency.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4xbTPMO
$15 OFF! 🔥 code: DMC11
🛒 Amazon: https://fnirsi.top/43H70bO

Save this comparison, then tell us: MC40 or DMC100?

02/09/2026

Want a clearer view of what your power supply is doing? ⚡

The FNIRSI-DPS150 shows voltage and current curves in real time, while the PC software keeps settings and test data in one place.

Export your results as an Excel report when you need a record.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4zJse79
$15 OFF! 🔥 code: DPS1515
🛒 Amazon: https://fnirsi.top/4737f2U

Save this workflow for your electronics bench.

01/09/2026

Battery testing is easier when the result is visible. 🔋

Set your Sorting Mode limits, test 18650 cells or battery packs, and get a green pass or red check.

The HRM-10 also keeps history records, with 8 readings shown per page.

Save this workflow for your next electronics repair or battery build.

31/08/2026

Ever read “01B” and assume it means 1Ω?

That’s the trap.

For EIA-96 SMD resistor codes:
01 → base value 100
B → ×10
So 01B = 1kΩ.

30C follows the same logic:
30 → 200
C → ×100
So 30C = 20kΩ.

Power off the board, isolate the resistor, and verify the result with the FNIRSI TMP-600.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4gC5QnB
10% OFF! 🔥 code: TMP10

Save this guide and comment the next code you want decoded.

27/08/2026

Your charger says “fast”—but which protocol is actually active?

The FNIRSI FNB58 automatically checks supported charging protocols, then displays live voltage, current and power while your device charges.

Switch interfaces, test compatible protocol profiles, and inspect charging curves or power ripple from one screen.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4qCNhUI
$8.99 OFF! 🔥 code: FNB899
🛒 Amazon: https://fnirsi.top/46duyXC

Save this for your next charger or power-bank test. Which protocol do you use most?

26/08/2026

Does 29.5 µF mean a 33 µF capacitor is still good?

We checked the same electrolytic capacitor with a component tester and a multimeter, then compared both readings with its marked tolerance.

Capacitance is only one clue—loss, ESR, leakage, and circuit behavior may still reveal a problem.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4z09xvH
$17 OFF! 🔥 code: DTC417
🛒 Amazon: https://fnirsi.top/46SXxju

Power off, discharge safely, and verify before testing. Save this for your next repair.

25/08/2026

One device. Three bench tools.

The FNIRSI TMP-610S combines a True RMS multimeter, oscilloscope, and DDS signal generator for electronics troubleshooting.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4gh83G3
10% OFF! 🔥 code: TMP10

A practical setup for makers, repair techs, and students. Save this for your next bench test—and share it with someone who still carries three separate tools.

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