Path: ...!feeds.phibee-telecom.net!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Lasse Langwadt Newsgroups: sci.electronics.design Subject: Re: Inductance meter for BIST Date: Thu, 11 Apr 2024 01:16:35 +0200 Organization: A noiseless patient Spider Lines: 24 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Thu, 11 Apr 2024 01:16:35 +0200 (CEST) Injection-Info: dont-email.me; posting-host="e655a33380257c59a3d7bc058da73bca"; logging-data="1326000"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+maSsi7UBPZgWt47KT/LrilAbXMipRL+A=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:rn0EmoC4k0z5X1mdvqosJcjoW1g= In-Reply-To: Content-Language: en-US Bytes: 2227 On 4/10/24 05:18, John Larkin wrote: > On Tue, 9 Apr 2024 22:58:30 +0200, Lasse Langwadt wrote: > >> On 4/9/24 02:17, john larkin wrote: >>> I can build this into my new programmable inductor module, for >>> self-test. With a 1% cap, it should be plenty good. L range will be >>> 750 mH down to maybe 10 mH, part of simulating solenoids and torque >>> motors and such. >>> >>> If I add a switch to open R3 and run some current through R1, it can >>> measure series resistance too. >>> >>> https://www.dropbox.com/scl/fi/tn8lpk38677ioylhdkget/P955_L-meter.jpg?rlkey=xynqyzfc2x020llr3a945c0td&raw=1 >>> >>> https://www.dropbox.com/scl/fi/gojlqxj23r4m57ke9jhui/Ind_Meter_1.asc?rlkey=if40kmtiz49gp62bacfvju3uv&dl=0 >>> >> >> https://github.com/coreWeaver/LC-Meter/blob/main/LC%20Meter%20v1.0/1.%20Schematic%20and%20Gerber%20UPDATED%20Apr.08%2C%202021/LC%20Meter%20-%20Schematic.pdf > > Are there specs on that one? I didn't see anything like a manual. > afaict there's a video explaining all the fucntions and equations https://github.com/coreWeaver/LC-Meter