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The Current Sense Circuit Vs Voltage sense
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gafsos



Joined: 01 Feb 2006
Posts: 161
Helped: 11
Location: North Africa
Post23 Jul 2007 17:07   

The Current Sense Circuit Vs Voltage sense
Plz help
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Post23 Jul 2007 17:07   

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barath_87



Joined: 07 Feb 2006
Posts: 171
Helped: 10
Post23 Jul 2007 17:17   

Re: The Current Sense Circuit Vs Voltage sense
A current sensing circuit will have very low impedence while a voltage sensing ciruit will have very high impedence ...

correct me if i am wrong...
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A.Anand Srinivasan



Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India
Post23 Jul 2007 17:40   

Re: The Current Sense Circuit Vs Voltage sense
practically there is no proper way to describe current sense circuits due to the zero impedance required... often it is the voltage sense circuit which does current sense too... for this purpose the voltage sense circuit is used to sense current by passing the current through a resistor....
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analog_prodigy



Joined: 19 Jul 2007
Posts: 139
Helped: 12
Post25 Jul 2007 6:37   

The Current Sense Circuit Vs Voltage sense
how can i able to design a current sense circuit in buck converter?
please refer any references
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A.Anand Srinivasan



Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India
Post25 Jul 2007 17:43   

Re: The Current Sense Circuit Vs Voltage sense
i've uploaded a file below and this file contains reference to how to sense current of a buck converter...
around 7 ways have been given in it.... this is mainly to avoid the method which involves the loss of power by the usage of a series resistor to measure current using the voltage across the series resistor...

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