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Your cart is empty.The withstand voltage tester widely used to test the maximum voltage capacity of IGBT/MOS tube/transistor/diode/electrolytic capacitor/LED/MOV/one-way thyristor/rectifier bridge,etc.
Works as designed
Reviewed in the United States on March 6, 2025
It accomplishes what you need, but the battery doesn't last. You might get a few uses before having to recharge.
Daniel P Ziemba
Reviewed in the United States on March 11, 2025
10MAR25There's a relatively large AC component riding on the DC. Take a look at the photos. At about 1500 VDC a 47V P-P signal from the converter isn't filtered out. The voltmeter shows the RMS level of the AC ~21.4V. The DC voltmeter checks out OK. It's just good enough as a tester for voltage breakdown, but not so good as a precise voltage source. Especially if you want to use the current limiting, otherwise strapping the output with a capacitor might help, but then there goes your impulse current limiting.
Charles
Reviewed in the United States on February 26, 2025
This is a good little tester where you can test various components like capacitors to see if they can hold a charge; just make sure you discharge the capacitor before you touch it. So I recommend buying the capacitor discharge tweezers if you are playing with capacitors.
David
Reviewed in the United States on September 12, 2024
The tester seems to work good, but the battery drains fast apparently, so I have to leave it charging all the time. If they fix that issue, it would be rated higher.
Roberto Valladares
Reviewed in the United States on August 18, 2024
All good
rpesq
Reviewed in the United States on June 23, 2024
I have no idea why, but I can charge this thing 100%, make sure that it is off, set it aside. Come back like a week later, and the battery is totally dead.There HAS to be defect. Either a bad battery or some kind of internal drain.It works OK otherwise, although it's kind of hard to know exactly how to perform the test (at what voltage and current level, and for how long). There's no hard and fast rules. EG: Test a random lot of chinese monolithic ceramic capacitors of unknown voltage. They seem to withstand around 250v for a minute at full current. Does that mean that they will handle 250v indefinitely? Yeah, it's somewhat voodoo because it all becomes guesswork.Anyway, disappointed about the battery performance and apparent drain while off.
jeremy l.
Reviewed in the United States on June 18, 2024
The tester actually goes up to 3766V. I tested the voltage with my fluke up to 1070Vdc. It was within 1Vdc. It works well on transistors and diodes. I tested a 63v 6800uf capacitor. It took a while to charge such a large cap with only 5mA. Eventually the voltage quit climbing around 72V. Defiantly worth the price.
JHoney
Reviewed in the United States on June 11, 2024
Able to charge from USB C PD (smart) supplies. The device seems to have a high self-discharge, even though it has a physical power switch. I only use this every week or two, and it seems like I always have to recharge it before using.The manual is short, but clear. It provides examples for testing many types of devices.Operation is pretty simple. Set the voltage and current knobs, then press the button to apply that to your device under test. The display shows the voltage reached.I tested a capacitor. It lets you see peak voltage of the capacitor following the method in the manual. For example I used a 50V 10uF cap, and it charged to 85V, but would not go higher. I imagine this could damage the capacitor, but it can be useful for characterizing batches.I measured the output as high as my meter would go (1000V), and the dial seems reasonably accurate.The device is a bit noisy during operation with some high pitch whines.The SMD clip is very heavy duty. It has solid metal jaws and a strong spring. Seems like too much for components with very thin legs.== Internals ==The charge chip is 4056C, possible by Linear Technology. There is a LiPo pack behind the circuit board. It looks about right for the 700mA claim, but I didn't check the label.There is a UTC 2SD1804L, High current NPN transistor, that seems to be controlled by the blue button. It's rated 60V 8A; so not directly controlling the output.GS8554 is a rail-to-rail IO op-amp. I think it is somehow related to the voltage or current control inputs.The high voltage section has a transformer, many diodes, and many resistors as well as two packages under a white compound. It feeds the output, and the voltage display which looks like a standalone voltmeter module.
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