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[SOLVED] current transformer for MAXQ3180

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cicciospi

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Hi,
Which is the model of the current transformer that I need for MAXQ3180? where to buy it?

Thank you :)
 

kak111

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I hope this is helpful...................

Reference Design for an Energy Meter Using the MAXQ3180/MAXQ3183 AFEs - Maxim

http://datasheets.maxim-ic.com/en/ds/MAXQ3180.pdf

in datasheets p. 68-69

Sensor Selection

Current Transformer
In a current transformer, the primary is usually one turn
of thick wire or buss bar and the secondary is often
1000 turns or more of magnet wire. A ferrite core magnetically
couples the two. Thus, a large current in the
primary turn creates a small current but large voltage in
the secondary winding.
For example, assume a current transformer with a 1000
turn secondary. A 10A current in the primary winding
induces a 10mA current in the secondary. This current
is made to flow through a so-called “burden” resistor,
usually 10Ω to 20Ω. Assuming a 20Ω burden, our 10A
current thus produces a 200mV signal in the secondary.

ie. you select current transformer as your need


Regards KAK
 

cicciospi

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Thanks for answer kak111.
For my application I need a current transformer of primary/secondary ratio = 300 and a burden resistor value of 20Ω.
Where can I buy this transformer?

Thanks, Francesco.
 

kak111

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cicciospi

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Thank you very much for help.
I found the current transformer that I need :)
 

Ram Prasadh

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Can You Tell Me the name of the CT you have used,sothat it would be helpful for me. Me too searching for a suitable CT for MAXQ3180
 

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