Author Topic: Why is the RSC resistor needed to sample the choke current in the system?  (Read 453 times)

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Offline akea

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Hello guys. Can u pls tell me Why is the Rsc resistor needed to sample the choke current in the system? Thank you
« Last Edit: May 05, 2019, 03:24:13 pm by akea »
 

Offline T3sl4co1l

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The system?

Tim
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Offline akea

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in converter
« Last Edit: May 05, 2019, 01:29:04 pm by akea »
 

Offline soldar

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All my posts are made with 100% recycled electrons and bare traces of grey matter.
 

Offline akea

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Anyone knows Why?
 

Online mikerj

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No one has any idea what you are talking about, you haven't even described the system you are referring to.
 

Offline akea

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sorry about it. i have just uploaded the system
 

Online mikerj

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The circuit seem to be incomplete, there is no inductor (choke) shown. 

The device block diagram looks like an MC34063 switching regulator, is that correct?  If so the resistor is used to provide current limiting, if the voltage drop across the resistor is greater than 300mV the duty cycle will be reduced to lower output voltage and hence lower the current.  Without current limiting an accidental short on the output could destroy either the regulator or the load.
 

Offline akea

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Yes its correct.Thank you very much  :)
 


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