Does anyone use current sensing resistors?

Does anyone use current sensing resistors? If so, can you share what application you use it in?

Thank you for your help.

Yes, i use them primarily for current sensing :p
But seriously, i use them mostly in linear powersupply's to measure/regulate the current with chips or microcontrollers.
Another use is in switching power supply's and battery chargers with regulated current.
Yours sincerely,
Boi

To regulate the current when driving LEDs with a switch-mode booster. Usually it's a string of LEDs in series. But, also high wattage LEDs.

Also, for max current rollback in power supplies.

What is the difference between a current sense resistor and a shunt resistor?
I am told that there is a difference between a sense resistor and a shunt resistor

I can find info about shunt resistors no problem, but I'm having a hard time finding out about sense resistors, any websites explaining them will be appreciated


thanks

A shunt resistor is used to change the range of a meter reading. For instance, a current meter that normally reads from 0 to 1ma, can be made to read from 0 to 1amp by the addition of a shunt across it's terminals. There might be other applications of a shunt that I don't know about, but bottom line, it is placed across an existing path to lower it's resistance.

A sense resistor is used to "sense" the current in a line for the purpose of reading that current -- usually in a feedback loop. That can be to determine it's magnitude or to respond to a certain level.

There is a subtle difference: a "shunt" _shunts out_ an existing path, whereas a sense resistor is not placed across something, but exists as a distinct path.

I have used them in current mode switching power supplies and also in a protection circuit to limit maximum current through a transistor acting as a relay output of a module.

Mostly power supplies, pic micro circuits for ADC also on amplifiers protection circuits, pwm supplies usually in conjunction with op amp comparator circuits, motor drive circuits where torque sensing is done via current sensing circuitry This would include automatic windows modules on vehicles etc HBridge drivers etc common use Test equipment etc

Also, they are used in motor current sensing in robotics applications. They can be used to help determine wheel slippage...

Hi Roy，
Are you still engaged in current sensor resistors now？
Can we talk it more.
My mail is wj564829864(_at_)hotmail.com
please just contacts me.

NIKILA

Hi sir,
can we talk more about current sensor resistors.
wj564829864(_at_)hotmail.com is my e-mail.
please just contact me.

BRs
NIKILA