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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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9th Dec 2021, 8:33 pm | #21 |
Dekatron
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,991
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Re: Choosing an LCR meter
I have, and regularly use
Marconi TF1313A HP250B RX meter Greneral Radio 1650A capacitance Bridge HP4275A RCL bridge I also have a GR 1650A orthonull bridge, and whatever the AVO component bridge is called, and various bits of Wayne Kerr gear. So I have most bases covered. Craig
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9th Dec 2021, 9:01 pm | #22 | |
Octode
Join Date: Jul 2009
Location: Cheshire, UK.
Posts: 1,738
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Re: Choosing an LCR meter
Quote:
Some vintage LCR test gear with a zero control I have; The Hickok DP200 capacitance module for DMS, has it labelled as "Picofarad Cancel Control", this is only used on the lower two ranges and can cancel 30pF of stray capacitance. Systron Donner 9400 L/C meter, only has a "C Zero" control as your modern meter does, I can't remember if it was working though, some ranges and the L function are broken. It does give good results on electrolytics, some of the known bad old stock Philips caps being checked. Yokogawa/HP 4332A LCR meter, has a L/C Zero control, not had this long, works well on C but I haven't checked R or L. It also has a output on the back for connecting a external digital voltmeter (or other equipment), most analog HP meters seem to have something similar. Racal (rebadged AIM) 9343M LCR bridge, also only has the "Zero C" control, this is the most modern LCR meter I have, also has three test frequency ranges of 100Hz, 1kHz and 10kHz. One day I'll make a test lead to be able to properly check against the L/C/R decade boxes I have. David |
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10th Dec 2021, 8:05 am | #23 |
Octode
Join Date: Mar 2006
Location: Bracknell, Berkshire,UK.
Posts: 1,174
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Re: Choosing an LCR meter
I have the AADE LC meter:
https://www.mtechnologies.com/aade/lcmeter.htm Sadly NLA since the designer passed away a few years ago but maybe available used. Can't remember what I paid but can't have been much over £100. The AADE measures components at a relatively high frequency, minimum 20kHz, and gives good and consistent results on small values with its 1% claimed accuracy. It has a built in zero function to take out the effect of probes, though it is hard to get a stable reading at lower values. Well recommended if you can find one. 73 Dave |