[volt-nuts] Ayrton Shunt does double duty.
Mitch Van Ochten
Mitch at vincentelectronics.com
Mon Apr 30 22:19:23 EDT 2018
Built a small temperature chamber using a Starbucks Refrigerator, Yokogawa Temperature controller, and PTC Heater (300 watt). It covers 0 degrees C to 55 degrees C and has an RS-485 interface to the PC. The compressor runs all the time, and the controller cycles the 300 watt heater as needed to stabilize the temperature. Here is a link to a YouTube video showing it:
From: volt-nuts [mailto:volt-nuts-bounces at febo.com] On Behalf Of geoelectronics at rallstech.net
Sent: Monday, April 30, 2018 6:22 PM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Ayrton Shunt does double duty.
No environmental chamber yet, have a Yokogawa controller and and an EIS
sensor simulator, going with a small box in the first for individual
components, but workload keeping me from completion of so many fun
projects. Now we are nearing grass cutting season here, the completion
of projects ratio will suffer.
On 2018/04/30 03:11 PM, jasonpepas at gmail.com wrote:
> Much appreciated! I saw some of those units listed on eBay inexpensively and was curious about such a "mod". Have you characterized it for tempco?
> Sent from my iPhone
>> On Apr 30, 2018, at 2:02 PM, geoelectronics at rallstech.net wrote:
>> Leeds and Northrup Ayrton Shunt box Model 2664.
>> Modified to do double duty as a precision resistor standard.
>> Pictures here:
>> Later I'll write it up and post it to that link as a PDF with text and
>> pictures, plus any subsequent modifications.
>> George Dowell
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