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High Voltage Probe 40,000 Volts Max DC, 28,000 Volts Max AC (50/60 Hz) Red, Black

High Voltage Probe 40,000 Volts Max DC, 28,000 Volts Max AC (50/60 Hz) Red, Black

Q: Can this be used to test output on microwave Transformers?

Yes. I have used it to check the HV output of a microwave and neon transformers. Be careful. Use one hand to measure and the other hand in your pocket.

Q: Can this be used with oscilloscope to measure ac beside 60hz sinusoidal? what is bandwidth?

I suppose it could, though the signal could potentially be noisy. The leads are not shielded. You would also have to correct the impedance. This probe uses a simple voltage-divider resistor network to do its magic. Good luck!

Q: Could this be use to probe the residual high voltage in a CRT monitor (and to dissipate it)?

Yes, definitely. The probe's input resistance in 1G-ohm (1000 M-ohm). With a typical 500pF filter capacitance in the CRT HV power supply, the discharge rate will be 0.5 seconds to discharge to 37% of the original voltage, 1 second to 37% of that, etc. After 5 seconds there will be only a couple of volts remaining. BE SURE to attach the ground clip to the metal chassis of the CRT device whether or not the probe is connected to a meter. To be completely safe, wait a minute after discharging then repeat the process. The glass in the CRT "absorbs" some charge and can recharge the filter capacitor to a few hundred volts.

Q: can it measure 12 volt vehicle ignition coils?

I could not say for sure. But the probe does indeed measure DC voltage up to 40,000 volts. So you should be able to set your meter that you have the probe plugged into and make the measurement, by setting your meter to read DC volts. (not AC volts) Obviously you're only dealing with 12v on automotive voltage.

Product ID: 170464798

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Details

Brand
EX ELECTRONIX
Special Feature
High Accuracy
Color
Red Black
Age Range (Description)
Adult
Included Components
High Voltage
Outer Material
Plastic

⚡40,000V DC

📏1,000MΩ impedance

🔌28,000V AC

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Description

🔋 Power Up Your Measurements!

HIGH INPUT IMPEDANCE - 1,000MΩ input impedance ensures minimal circuit loading.
PRECISION ENGINEERING - Achieve accuracy of +/- 1% at 20KV and +/- 2% at 40KV.
DIVISION RATIO MASTERY - Experience a division ratio of 1,000:1 for precise measurements.
UNMATCHED VOLTAGE RANGE - Handle up to 40,000V DC and 28,000V AC with ease.
VERSATILE FREQUENCY COMPATIBILITY - Designed for 50/60 Hz applications, perfect for global use.

The EX ELECTRONIX EXPRESS High Voltage Probe is engineered for professionals, offering a maximum of 40,000 volts DC and 28,000 volts AC. With a high input impedance of 1,000MΩ and impressive accuracy, this probe is perfect for precise electrical measurements in various applications.

Have a Question? See What Others Asked

Can this be used to test output on microwave Transformers?

Can this be used with oscilloscope to measure ac beside 60hz sinusoidal? what is bandwidth?

Could this be use to probe the residual high voltage in a CRT monitor (and to dissipate it)?

can it measure 12 volt vehicle ignition coils?

Reviews

S**R

Works fine

Seems to work fine. Can't check calibration exactly, but it reads very close to a 5kV analog meter on my hipot tester.

27.06.2025

H**L

It really is accureate!

Have always needed a high-voltage probe but made do with a 470 Meg resistor from my junkbox and some math. However the reasonable price of this item (compared to the big names) pushed me over the edge and I 'm happy for it! Accuracy of the probe itself is better than 1/2% as confirmed be measuring a moderate voltage directly with my 4-1/2 digit DVM on the Volts scale then measuring it again with this probe on the mVolts scale and the readings agreed perfectly!

20.04.2021

R**D

Design Changes

About right for price, but would be wiling to pay twice the price with a variable user slectable voltage splitter ratio in several increments to less than 1000:1 from 40 kv. Also, with a probe that is a flexible shaft instead of rigid; also, with a slightly larger

5.11.2021

D**R

Measures accuratly and working fine

Used it to diagnose my electrostatic air filter. Found the high voltage transformer not working. Replaced and verified the correct voltage working.

5.11.2024

W**H

15.04.2025

J**.

looks good and works

Arrived and works as expected

12.11.2024

S**M

2 out of 5 is bad

Why did you pick this product vs others?:Works good when it’s working , but most the time it won’t read anything not sure if I go a dud or not but I can’t return now as it’s out of the window. I would say test as soon as you get it

16.07.2025

M**D

Be very careful with high voltage

Works as described 👍

22.07.2024

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