conversion ac/dc

badr ammour101188

Hello

I would like to find a good way in order to do an ac/dc conversion ( a circuit that i would link to a card)

i would like to have in the entry of my circuit an analog input of 400V, and i have a digital output of 3.3V ( that is present in my card), of course i would like a secure' way (isolation if possible) in order not to destroy my card ^ ^.

I've seen on internet, but i've not really found a way to do it.

Is there any TI component and a model of circuit that would help me to realize this?

In fact while i'm writing these lines i'm realizing that i'm still mixing between analog and digital I/O (can anyone help undestand this point please).

Thank you for your attention

Regards

Badr

over 14 years ago

0 badr ammour101188 over 14 years ago

Prodigy 90 points

In fact it's an analog to digital conversion (and not alternate to continous) ^^

0 badr ammour101188 over 14 years ago in reply to badr ammour101188

Prodigy 90 points

and the 400V input voltage is in fact alternative

0 Elias Villegas M. over 14 years ago in reply to badr ammour101188

TI__Guru* 76130 points

Hello Badr,

In order for you to get better support, I encourage you to post your issue at the Data Converters Forum at the link below.

Regards.

http://e2e.ti.com/support/data_converters/precision_data_converters/f/73.aspx

0 Tom Hendrick over 14 years ago in reply to Elias Villegas M.

TI__Guru**** 182721 points

Hi Badr,

While Elias has suggested you post in the Precision Data Converter forum, this is probably the best place for you to post at the moment until we get a better idea of exactly what it is you are trying to do. Are you perhaps monitoring AC mains voltage? We don't have anything off the shelf that can handle the 400VAC you mentioned, you'll have to attenuate that to some extent - perhaps using a transformer of some sorts. Tell us more about your application and we may be able to help you with a solution.

Data converters

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conversion ac/dc