Re: Inductance meter for BIST

On 4/10/24 05:18, John Larkin wrote:

On Tue, 9 Apr 2024 22:58:30 +0200, Lasse Langwadt <llc@fonz.dk> 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