Products > Test Equipment

LCR Meter Recommendation

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BillyO:

--- Quote from: KungFuJosh on November 04, 2024, 01:34:45 am ---Would they sell it for $200? 😉

--- End quote ---
No. :(  The $350 was negotiated down from $425.


--- Quote from: KungFuJosh on November 04, 2024, 01:34:45 am ---Can you run some tests before you buy it?

--- End quote ---
Probably some minor stuff, but they do offer a return policy, so I can test all I like once I get it home.  They are good guys.  I've bought a ton of stuff off them over time.

KungFuJosh:

--- Quote from: BillyO on November 04, 2024, 01:39:28 am ---
--- Quote from: KungFuJosh on November 04, 2024, 01:34:45 am ---Would they sell it for $200? 😉

--- End quote ---
No. :(  The $350 was negotiated down from $425.


--- Quote from: KungFuJosh on November 04, 2024, 01:34:45 am ---Can you run some tests before you buy it?

--- End quote ---
Probably some minor stuff, but they do offer a return policy, so I can test all I like once I get it home.  They are good guys.  I've bought a ton of stuff off them over time.

--- End quote ---

PM if you want to borrow my LCR Cal Test Board, or if you want your own.

Smokey:

--- Quote from: BillyO on November 03, 2024, 11:23:47 pm ---
--- Quote from: Smokey on November 03, 2024, 11:21:41 pm ---Having DC bias capabilities for capacitors was something I was always missing from the handheld and cheap bench LCRs.  You don't realize how much capacitance drops off until you can measure with the actual DC bias.  That's a must have on my LCR feature list now.

--- End quote ---
The Protek Z9218 has that ability.

--- End quote ---

Cool.  Up to 60v too.  No gpib.  Pretty inexpensive on eBay right now.

mawyatt:

--- Quote from: Smokey on November 03, 2024, 11:21:41 pm ---Having DC bias capabilities for capacitors was something I was always missing from the handheld and cheap bench LCRs.  You don't realize how much capacitance drops off until you can measure with the actual DC bias.  That's a must have on my LCR feature list now.

--- End quote ---

This is an important aspect of LCR DUT evaluation, some capacitors have significant capacitance change with DC bias voltage, ceramic X7R types are an example, also interesting to see how PN Junctions vary with DC Bias.

When we acquired our TH2830 a few years ago we wanted to investigate DC bias effects on various DUT, this lead us to develop the LCR Meter DC Bias adapter, details here:

https://www.eevblog.com/forum/projects/bias-network-for-lcr-meter

This should work well for LCR Meters that allow a Short/Zero Ω that bypasses DC, it doesn't work with the DE-5000 for that reason.

The Protek looks interesting, altho the specs claiming a Capacitance range of 0.00001pF to 99,999uF seems questionable. 0.00001pF has an impedance at the highest frequency measurement of 100KHz of ~160GΩ!! Don't think this is quite measurable with this instrument :o

Best

BillyO:

--- Quote from: mawyatt on November 04, 2024, 01:41:07 pm ---The Protek looks interesting, altho the specs claiming a Capacitance range of 0.00001pF to 99,999uF seems questionable. 0.00001pF has an impedance at the highest frequency measurement of 100KHz of ~160GΩ!! Don't think this is quite measurable with this instrument :o

--- End quote ---
I think it means display range rather than actual measurable value range.

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