| Products > Test Equipment |
| LCR meter reccomendations, mostly for measuring ESR on e-caps |
| << < (3/8) > >> |
| Martin72:
--- Quote from: RiRaRi on July 28, 2023, 01:17:26 am ---Hello. I am looking for good quality LCR which can measure at different freq. I need it mostly for measuring caps. I was looking at popular DE DER5000 and more expensive BK 880. Which LCR do you use for this and which one is good quality option for this purpose? --- End quote --- For general purposes I do not know a better meter than the DE5000 in it´s pricerange. But for --- Quote ---mostly for measuring ESR on e-caps --- End quote --- it is not uninteresting to know what frequencies you have in mind for ESR measuring. Because like almost all "cheap" LCR-Meters the DE5000 have no problems with measuring the main parameters LCR, but the secondary parameters could and will depend on the testfrequency how trustworthy they are. |
| RiRaRi:
Isnt that the thing for all LCR meter? That you have to select needed freq in order to accuratly test cap? Or more expensive meters like BK880 can do it on all freq? |
| TimFox:
The ESR itself is a function of frequency, in general. The DE-5000 has 100 and 120 Hz (for normal rectifiers), 1000, 10k, and 100 kHz setrtings. |
| pdenisowski:
--- Quote from: RiRaRi on August 07, 2023, 11:21:34 pm ---Isnt that the thing for all LCR meter? That you have to select needed freq in order to accuratly test cap? Or more expensive meters like BK880 can do it on all freq? --- End quote --- Once you move to benchtop LCR meters you can usually specify a precise frequency (rather than select from a set of discrete frequencies) and/or sweep across a range of frequencies. This is also true for more advanced impedance analyzers as well. Always best to test your components at the frequency (or range of frequencies) of intended operation. |
| mawyatt:
The specification capacitor measurement frequency is usually associated with the intended usage. For example, electrolytic types are usually specified at 100 or 120Hz as this is the dominant frequency of the charge current is a typical "linear" type mains power supply, whereas a film type might be specified at 1KHz, caps intended for SMPS use are often specified at higher frequencies (10KHz, 100KHz). Some caps intended for RF use are specified at 1MHz or higher. Anyway, for serious considerations one really needs the ability to measure over a broad frequency range and why bench type LCR meters are valuable, ones extending into the MHz range more so, and why we have the DE-5000, supplemented by the TH2830 and IM3536. Expensive yes, but necessary for our work, as capacitors are the most widely utilized and least understood passive component, and Murphy is always hiding within :o Best, |
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