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Hi,
I am measuring Dc motor RPM using a rotary encoder(custom made).The input supply to the encoder is 3.3v and the encoder output(Sine wave) is given to the Schmitt trigger to get square shaped signal.
I read this signal through a microcontroller for controlling the motor.
I have few question...
The current drawn is directly proportional to the load.If you want to limit the load from consuming 10A instead of 1A, then I think you should measure the current and before it shoots up you have to cut the source of input to the load.
Regard's
siva
The simplest way is put a series resistor on the battery line and measure the voltage drop through the MCU ADC, Normally they use shunt resistor which will have low resistance and high watt, you can check for "wire wound resistor"(particularly the one coated with ceramic).
The other way is you...
Thanks frank.I will sure check that, also I was more hoping on suggestion for the current sensor part like some filter circuit or fundamental mistake in the circuit etc.But anyways like you said there could be some noise induced by the brushes too.I will check on your suggestions.
siva
Hi everyone,
I am working on a project where I control PMDC motor by switching on/off through mosfet (PWM control) by DSP controller, also I measure real-time current of the motor using LEM (LTS-15-NP) current transducer.
Well, the problem is I get noise in the current sensor output line when...
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