What is the voltage between R wire and C

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Old 04-20-18, 09:23 AM
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What is the voltage between R wire and C

What is the voltage between R wire and C wire. ?
I need to power my thermostat with 3.3 VDC /0.3ADC.
I have an AC to DC converter on my board and a power regulator.
Can i do it ?

Sorry to post here but i did not find the button for new posts.

Thank you.
 
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Old 04-20-18, 09:06 PM
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Started new thread for you.

The voltage between R and C is nominal 24vac.
 
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