Search found 6 matches

by jcozzarelli
Tue Apr 01, 2014 6:19 pm
Forum: Nixie thermometer V1
Topic: Calibration
Replies: 12
Views: 56075

Re: Calibration

Tony
This is what I ordered. Will it work?
Joe

Order placed
March 31, 2014
Order Details | Invoice
Order #114-9217835-5597846
Recipient Joe Cozzarelli
Total $12.60

MURATA POWER SOLUTIONS - 13R333C - STANDARD INDUCTOR, 33UH, 1.8A, 10%
Sold by Materro LLC
by jcozzarelli
Tue Apr 01, 2014 2:42 am
Forum: Nixie thermometer V1
Topic: Calibration
Replies: 12
Views: 56075

Re: Calibration

Tony:
Trying to get 1 inductor is extremely expensive. Most component suppliers have a minimum order quantity that makes it unreasonable.
After spending $180 for a kit, I think that it is reasonable for you to support your product and ship me the updates as required.

Joe
by jcozzarelli
Wed Mar 26, 2014 2:22 pm
Forum: Nixie thermometer V1
Topic: Calibration
Replies: 12
Views: 56075

Re: Calibration

Hi Tony
I believe it is self heating.
When I first turn on the unit, it is very close to the accurate room temp. Within a degree or two.
After about 5 to 10 minutes it reads about 5 degrees warmer than it actually is.
I will try the 33uH change.
Joe
by jcozzarelli
Tue Mar 25, 2014 1:39 am
Forum: Nixie thermometer V1
Topic: Calibration
Replies: 12
Views: 56075

Re: Calibration

Tony
I had a long lead that was limiting the contact to the sil pad.
The temperature is much closer. I's say within 5 degrees.
Where can I get the alternate 33 uH inductor?
Not a radio shack item.
Joe
by jcozzarelli
Mon Mar 24, 2014 12:01 pm
Forum: Nixie thermometer V1
Topic: Calibration
Replies: 12
Views: 56075

Re: Calibration

Hi tony
I have the 22uh coil. Where do I get the 33?
I don't recall the current draw but it seemed reasonable. I will double check.
I will recheck my assembly
Joe
by jcozzarelli
Sun Mar 23, 2014 3:58 am
Forum: Nixie thermometer V1
Topic: Calibration
Replies: 12
Views: 56075

Calibration

Is there any way to calibrate the temperature? It is almost 15 degrees too high.