The discussion revolves around locating a high power shunt resistor suitable for handling 20-25 W with a resistance of less than 1 ohm. Participants explore options for sourcing such components and share personal experiences related to shunt resistors.
Participants have not reached a consensus on the best source or specific model of shunt resistor, and multiple suggestions and experiences are presented without resolution.
Some participants' responses depend on specific current ratings and resistance values, which may not align with the original request. There is also variability in the context of use for shunt resistors, which may affect recommendations.
Individuals seeking high power shunt resistors for applications in electrical engineering, particularly those involved in current sensing or motor control, may find this discussion relevant.
what said:
berkeman said:
Well, it was for a DC motor pumping dozens of hydraulic lifts in a truck trailer capable of carrying automobiles. The idea was not to exceed the motor's maximum current rating, when the trailer was subjected to heavy loads. The motor was expensive and has blown before. If I remember correctly the peak current reached about 120 amps @ 24 volts. I should say, the shunts resistance was 75 milliohms, not 0.75 ohms.