All Questions
Tagged with current-sensing resistors
9 questions
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Makerbase TMC2226 stepper driver board: are current sense resistors underrated power-dissipation-wise?
I am looking at the schematics for Makerbase TMC2226 stepper driver board:
The schematic shows 1/8W 0.11 ohm current sense resistors.
The datasheet for TMC2226 IC says:
8 Selecting Sense Resistors
.....
- 101
2
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1
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47
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Troubleshooting Voltage Sensing Issues in Buck-Boost Chip Simulations
I performed a simulation on a buck-boost chip (LT8390). I understand that the sensing resistor placed between LSP and LSN is supposed to sense the differential voltage. This voltage is then amplified ...
- 534
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Sensing Resistor in Buck-Boost controllers
In the LT8390, there are two sensing resistors. The one connected to LSN/LSP is called RSENSE(Buck), and the one connected to ISP/ISN is called RSENSE(BOOST). To illustrate this more clearly, I've ...
- 534
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2
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Designing a current sensing op-amp circuit for an AC load
I'm trying to simulate a current sensing op-amp circuit. My AC voltage, 24 VAC, is across a load of 10 Ω. I used a 100 μΩ resistor and measured the voltage across it using an op-amp.
Looking at some ...
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6
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1
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525
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Is it wise to determine heating element temperature from resistivity?
Context
I'm making an electric furnace for melting metal, and aiming to make my own controller.
Everyone seems to just use thermocouples and a control loop, I thought perhaps I could just measure the ...
- 355
1
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1
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201
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How to select current sense resistors for ir2136 ITRIP signal
Looking at the datasheet of the IR2136 it suggests this little resistor network as input for the ITRIP pin.
https://www.infineon.com/dgdl/Infineon-IR213-DS-v01_00-EN.pdf?fileId=...
- 113
1
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2
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1k
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Four-terminal resistor pinout?
Anyone can tell me (or preferably, point me to a source that explicitly shows) the pinout of the 4-pin current-sense resistors?
I'm seeing the datasheets for three different models (including Rideon'...
- 2,175
1
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1
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What are shunts, as related to their use in current sensing in microcontrollers?
Within the manual for the I/O module I'm using (a Loytec LIOB-153) there are wiring diagrams to aid in wiring up your sensors and other inputs/outputs. There are two wiring diagrams for the purpose of ...
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5
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2
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960
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The benefit to make or use a surface mount 4-terminal current sensing resistor
I find some precision SMD resistors are 4-terminal, like vishay's CSM3637P. It's constructed as below:
It seems it only make a slot on each pad, then get two extra pad to do the voltage measurement.
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