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Author Topic: Why is the RSC resistor needed to sample the choke current in the system?  (Read 1315 times)

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Offline akeaTopic starter

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Why is the RSC resistor needed to sample the choke current in the system?
« on: May 05, 2019, 09:12:03 am »
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 »
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Online T3sl4co1l

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Re: Why is the RSC resistor needed to sample the choke current in the system?
« Reply #1 on: May 05, 2019, 09:32:20 am »
The system?

Tim
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Offline akeaTopic starter

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Re: Why is the RSC resistor needed to sample the choke current in the system?
« Reply #2 on: May 05, 2019, 09:47:35 am »
in converter
« Last Edit: May 05, 2019, 01:29:04 pm by akea »
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Offline soldar

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Re: Why is the RSC resistor needed to sample the choke current in the system?
« Reply #3 on: May 05, 2019, 09:56:16 am »
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Offline akeaTopic starter

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Re: Why is the RSC resistor needed to sample the choke current in the system?
« Reply #4 on: May 05, 2019, 01:30:12 pm »
Anyone knows Why?
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Offline mikerj

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Re: Why is the RSC resistor needed to sample the choke current in the system?
« Reply #5 on: May 05, 2019, 02:07:09 pm »
No one has any idea what you are talking about, you haven't even described the system you are referring to.
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Offline akeaTopic starter

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Re: Why is the RSC resistor needed to sample the choke current in the system?
« Reply #6 on: May 05, 2019, 03:25:15 pm »
sorry about it. i have just uploaded the system
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Offline mikerj

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Re: Why is the RSC resistor needed to sample the choke current in the system?
« Reply #7 on: May 05, 2019, 05:23:04 pm »
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.
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Offline akeaTopic starter

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Re: Why is the RSC resistor needed to sample the choke current in the system?
« Reply #8 on: May 05, 2019, 05:51:33 pm »
Yes its correct.Thank you very much  :)
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