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- Path: sparky!uunet!olivea!decwrl!sdd.hp.com!hpscdc!hplextra!hpcc05!hpscit!rkarlqu
- From: rkarlqu@hpscit.sc.hp.com (Rick Karlquist)
- Newsgroups: sci.electronics
- Subject: Re: Impedance Analysis on transformers
- Message-ID: <55550022@hpscit.sc.hp.com>
- Date: 12 Aug 92 16:42:18 GMT
- References: <1992Aug12.062518.819@smsc.sony.com>
- Organization: Hewlett-Packard, Santa Clara, CA
- Lines: 29
-
- In sci.electronics, amir@smsc.sony.com () writes:
-
- > It seems that LCR analyzers can not detect capacitance in parallel with
- > an inductor. So, I have been looking at the (very expensive) HP 4194A
- > impedance and gain/phase analyzer. This box gives you an equivelant circuit
- > (up to 5 devices). Is this an overkill? Are there cheaper solutions that
- > are just as good?
-
- > --
- > Amir H. Majidimehr
- > Operating Systems Group
- > Sony Microsystems
- > amir@sony.com | ...!{uunet,mips}!sonyusa!amir
-
- I have used the HP 4194 extensively for transformer characterization and
- would say it really is what you need if you want to do any serious modeling.
- Before we had it, we used a vector impedance meter. Theoretically, it
- makes the same measurements. But the ability of the 4194 to give you
- a display of various parameters vs. frequency gives you much more
- insight into what the component is doing. You can display Z, phase, or
- inductance (either series or parallel) and loss resistance. I really
- can recommend this box highly (and I'm not just saying that because it
- is made by my company). My designs have been improved considerably due
- to the use of it. It gives you an unfair advantage over other engineers
- who are designing without it.
-
- Rick Karlquist
- Hewlett-Packard Santa Clara Division
- rkarlqu@scd.hp.com
-