[time-nuts] Re: Temperature accuracy / repeatability / drift of double ovens

[Lux, Jim]

On 3/31/23 4:04 PM, Richard (Rick) Karlquist via time-nuts wrote:
> I believe that IC went out of production decades ago.
>
> Rick
>
https://www.analog.com/en/products/ltc1923.html#product-overview


High Efficiency Thermoelectric Cooler Controller

Example circuit is 0.01degree.

Eval boards available too DC388C and DC491A


Looks like a $40 part, with a $150 eval board.






> On 3/31/2023 11:13 AM, Ed Marciniak via time-nuts wrote:
>> Linear technology made a thermoelectric full H bridge temperature 
>> controller. At the time, I’d like to say it came as a lot of two 
>> components. The second was an op-amp that may have been selected or 
>> trimmed unless there was a good reason to include it with samples 
>> (maybe less commonly available).
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