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Post by Philconut on Jun 13, 2020 20:46:10 GMT 12
I am wanting a meter movement to replace the faulty one in my AVO MkIV VCM. An old multimeter or similar would be ideal. F.S.D. is unimportant as I can fit an op-amp interface to match it. Can anyone help please? Thanks |
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Post by dada on Jun 13, 2020 20:58:24 GMT 12
Any dimensions,pictures or other physical requirements there John? Chrs, DC
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Post by Philconut on Jun 13, 2020 22:34:14 GMT 12
Photo attached. The meter is 100mm wide but the actual dimensions are not critical. As long as I can fit the movement into the case, I can adjust the pointer length & movement balance to suit. The original movement is 30 micro-amps but that too is not critical. Mounting is 26mm c/c. Don't know why the image is upside down but you can see the mounting studs.
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Post by Philconut on Jun 18, 2020 21:24:43 GMT 12
Problem sorted. Now I have to build an opamp interface to match it to the AVO.
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Post by Radiotech on Feb 4, 2021 16:29:41 GMT 12
Problem sorted. Now I have to build an opamp interface to match it to the AVO. I don't know if you saw it in your searching, but I have had this bookmarked for a while (I was hunting on behalf of someone and added it to my bookmarks).
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Post by Philconut on Feb 4, 2021 17:43:48 GMT 12
Thanks for the link. I have very successfully completed a movement transplant with an op-amp interface.
Article in latest mag.
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