Modifying Program to Control Current at Maximum Duty Cycle

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SUMMARY

The discussion focuses on modifying a legacy program to control current output at maximum duty cycle using PWM (Pulse Width Modulation) signals. The user seeks to implement a system where the output current can be adjusted based on user input, specifically targeting a current output of 2kA. It is established that while PWM controls voltage cycles, the actual current output is dependent on the load, following Ohm's Law (V=IR). Therefore, independent control of voltage and current is not feasible without considering the load characteristics.

PREREQUISITES
  • Understanding of PWM (Pulse Width Modulation) principles
  • Knowledge of Ohm's Law (V=IR)
  • Familiarity with electrical load characteristics
  • Experience with programming for hardware control
NEXT STEPS
  • Research methods for implementing PWM control in embedded systems
  • Learn about load types and their impact on voltage and current relationships
  • Explore techniques for user input handling in hardware programming
  • Investigate current sensing and feedback mechanisms for precise control
USEFUL FOR

Electrical engineers, embedded systems developers, and anyone involved in hardware programming and control systems seeking to manage current outputs effectively.

rama1001
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Hi,
I want to modify a program that was written long ago. I would like to give the output from hardware as user input. Here, user input deals with current at maximum duty cycle allways. My task is to control the current according to the user input. Let say, if user wants 2kA as O/P and i should only activate my PWM signal until for 2KA and rest should be in sleep.

What i wonder is PWM is only represent the voltage cycles and how can then i control the current at full duty cycle.

Can someone help me out.
 
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You can control voltage or current, but the relationship between voltage and current depends on the load. The simplest load is a resistor R, then V=IR is the relationship.

To reiterate, you cannot control both V and I independent of the load.
 

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