Questions tagged [current-sensing]
The current-sensing tag has no usage guidance.
34
questions with no upvoted or accepted answers
2
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0
answers
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High voltage 1100 V current sense on the high side
I have the circuit that you see below.
My load is a photomultiplier tube equivalent to a 3.63Mohm resistor.
My power supply can deliver max 4W (2kV and 2mA). I use it on 1100V and the load draws ~...
- 147
2
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0
answers
371
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Problem simulating LMP8645 current sense amplfiier in LTspice
Basically the problem i am getting is that the output offset voltage is extremely large (58mv)
here is the datasheet for the amp: http://www.ti.com/lit/ds/symlink/lmp8645hv.pdf
on page 9 it shows ...
- 21
1
vote
2
answers
125
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Input Filter for Current Sense Amplifier - ODrive
Out of curiosity, can anyone explain to me why the input filters for the current sense amplifiers in the old ODrive schematics are unbalanced (i.e., the external resistor is only on the negative CSA ...
- 11
1
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0
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202
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Removing the effects of Parasitic Inductance in current sense resistor – Low side current sensing
We are evaluating MIC21LV32 from microchip in one of our applications.
For the current sensing we have used 3 mΩ sense resistor (1206, 1 %, 1 W), as these sense resistors have higher ESL+ parasitic ...
- 1,398
1
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0
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78
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AC Current Sensing LED indicator circuit
I'm playing around with a circuit to drive a LED based on the output from a current sensing transformer. The idea is to have the LED appear proportionally brighter with the output from the current ...
- 387
1
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0
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212
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Detect Battery Insertion in USB Charging Circuit
I'm using an MCP73831T as the charger IC, I've figured out how to detect the charging/charged, this was easy, however, I would like to know when the battery is actually plugged in, I know when the usb ...
- 153
1
vote
1
answer
235
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Reading registers from ACS71020 over SPI
I'm trying to read registers from current-sensing chip ACS71020 connected over SPI.
This is how I initialize the SPI:
...
- 11
1
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0
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75
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Buck converter design using MCP1630V
I have already designed a buck converter with the following specifications using an MCP19035:
Vin=14V,
Vout=1.8V,
Fc=63kHz(Crossover frequency),
Vref=0.6V,
Iout=10A
step load High IOH=7.5A
step ...
- 1,020
1
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0
answers
73
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Using a switching DC-DC converter in high dynamic range current/voltage sensing
I'm thinking of making a power meter circuit which will have a high-side current-sensing amp (LTC6102), a resistive voltage divider for sensing the voltage, a dual op-amp (OPA2365) as a buffer for the ...
- 825
1
vote
1
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96
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Current sensing application
The purpose of the application is to maintain a constant current at the load, even if the resistance changes.
I understand that the ADC is reporting the voltage and current values at the load to the ...
- 71
1
vote
1
answer
218
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Current sense amplifier working principle
i am running a bldc motor Infineon TLE9879 chip. Now i want to measure the current flowing through the motor. so i use the current sense amplifier where the motor current is converted to a voltage by ...
- 191
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0
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33
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Current sensing in DC-DC converter
I studied DC-DC converter in peak/valley/average mode control and I have a question about the methodology to sense the current in average current mode control. I saw lot of paper about DCR sensing but ...
- 324
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0
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20
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Unipolar stepper driven PWM to reduce voltage
I need to drop voltage for unipolar stepper motor with winding resistance 50ohm and inductance 40mH (measured with generator and oscilloscope for equivalent circuit Rout + (Rl + L)). Available Vcc is ...
- 1,100
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Current-sense resistor switching mechanism
I planned to make a DIY power meter with automatic switch for current range, usually towards low (uA maybe) currents.
I came up with the design below to switch between various current-sense resistors. ...
- 2,017
0
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2
answers
132
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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 ...
- 1