AC RPM and the amount of Reactance

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    Ac Reactance Rpm
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SUMMARY

The discussion centers on the relationship between reluctance and frequency in AC circuits, specifically addressing misconceptions about how reluctance affects frequency. It clarifies that while capacitive reactance (Xc) is inversely proportional to frequency, inductive reactance is directly proportional. The conversation emphasizes the necessity of context, particularly in applications such as induction motors and arc welding, to accurately interpret the effects of reactance on operational parameters.

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  • Understanding of AC circuit theory
  • Familiarity with reactance concepts (capacitive and inductive)
  • Knowledge of induction motors and their operational principles
  • Basic principles of arc welding and cutting speeds
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  • Research the principles of inductive reactance in AC circuits
  • Study the impact of frequency on capacitive reactance
  • Explore the operational characteristics of induction motors
  • Learn about the cutting speed parameters in arc welding applications
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Electrical engineers, students studying AC circuit theory, professionals working with induction motors, and those involved in arc welding processes.

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TL;DR
For Rate of cutting in ac that means a higher frequency which also means a lower reactance theoretically. If so, why is higher rpm ideal?
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No, you can't say that reluctance changes frequency.

Back up. Explain the context of your question please.
 
anorlunda said:
No, you can't say that reluctance changes frequency.

Back up. Explain the context of your question please.
Ohh I was thinking about capacitors since Xc=1/(2*pi*f*c) where xc is inversely proportional to Frequency but in inductors they are directly proportional..
 
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We still need context. Are you asking about the RPM of an induction motor? or the cutting speed of an arc welder? Or what does "rate of cutting in AC" mean?
 

Thread 'uA709 op amp compensation'

Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?
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