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Part identification - high voltage SMD ceramic thick film resistor
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r0d3z1:
Can anybody help to identify this component ?
It looks like an high voltage SMD ceramic thick film resistor. The left pin are connected to the DC-link and from the 6 pin on the right start 6 tracks directed to the microcontroller.
Thanks
Gyro:
Strange (from your connection description). It looks more like a current shunt, with the current pins on the right, shared over multiple pins, and the potential sense pins on the left.
T3sl4co1l:
Alternately, it looks like not much ratio, e.g., about 15 squares of resistance on the long arms, and one square in the middle. So, a differential gain of 1/15 to 1/30, depending on exactly how the fields work out.
That assumes the conductive traces are solid underneath the enamel, and not snaking further.
I can say say with confidence, you aren't going to find this unless it's specifically made available by the manufacturer as a replacement part. Consider replacing the board.
Tim
r0d3z1:
--- Quote from: Gyro on April 10, 2019, 10:06:36 am ---Strange (from your connection description). It looks more like a current shunt, with the current pins on the right, shared over multiple pins, and the potential sense pins on the left.
--- End quote ---
Initially I have also thought the same, however the connection doesn't make sense for a shunt.
--- Quote from: T3sl4co1l on April 10, 2019, 10:18:20 pm ---I can say say with confidence, you aren't going to find this unless it's specifically made available by the manufacturer as a replacement part. Consider replacing the board.
--- End quote ---
Thank you Tim, however the post is not for a repair/replacement purpose. I was curious to understand what this component could be. If it is not a shunt, what could it be ?
T3sl4co1l:
Well then... measure it and see what it is. It's a four way resistor. Low values suggest current shunt, high values suggest voltage sense. ;D
Otherwise, no, I don't have any particular insight into why it's drawn the way it is. Who knows...
Tim
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