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optical tack got flaky
Posted: Fri Jan 11, 2019 7:24 pm
by reible
When I was using my optical tachometer the other day it seemed a little flaky and I traced it down to the battery connection.
- IMG_2415rsmc.jpg (167.71 KiB) Viewed 6172 times
It uses a 9 volt battery and the one connector was not getting a nice tight fit on the battery post. So I replaced the clip with a new one but since I had it open to work on I thought I would post a picture of what it looks like inside.
- IMG_2416rsc.jpg (214.77 KiB) Viewed 6172 times
And all that for less then $10.......
Ed
Re: optical tack got flaky
Posted: Fri Jan 11, 2019 7:31 pm
by jsburger
reible wrote:When I was using my optical tachometer the other day it seemed a little flaky and I traced it down to the battery connection.
$matches[2]
It uses a 9 volt battery and the one connector was not getting a nice tight fit on the battery post. So I replaced the clip with a new one but since I had it open to work on I thought I would post a picture of what it looks like inside.
IMG_2416rsc.jpg
And all that for less then $10.......
Ed
Interesting, it looks like a crystal at the bottom of the IC. We used them in HAM radio equipment years ago to set frequencies.
Re: optical tack got flaky
Posted: Fri Jan 11, 2019 9:19 pm
by JPG
jsburger wrote:reible wrote:When I was using my optical tachometer the other day it seemed a little flaky and I traced it down to the battery connection.
$matches[2]
It uses a 9 volt battery and the one connector was not getting a nice tight fit on the battery post. So I replaced the clip with a new one but since I had it open to work on I thought I would post a picture of what it looks like inside.
IMG_2416rsc.jpg
And all that for less then $10.......
Ed
Interesting, it looks like a crystal at the bottom of the IC. We used them in HAM radio equipment years ago to set frequencies.
Really! I guess it needs an accurate time reference!
Re: optical tack got flaky
Posted: Sat Jan 12, 2019 2:02 pm
by dusty
reible wrote:When I was using my optical tachometer the other day it seemed a little flaky and I traced it down to the battery connection.
$matches[2]
It uses a 9 volt battery and the one connector was not getting a nice tight fit on the battery post. So I replaced the clip with a new one but since I had it open to work on I thought I would post a picture of what it looks like inside.
IMG_2416rsc.jpg
And all that for less then $10.......
Ed
And still available for about $13.