Questions tagged [pwm]
Pulse-width modulation, is varying the duty cycle of a rectangle wave, usually with a constant frequency.
3,050 questions
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0 answers
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Generating two PWM signals from a PIC18F45K20
I'm doing an environmental control group project for my embedded systems module. I want to generate two PWM signals: Control fan speed from ADC readings from a TMP36 Dim an LED strip depending on ADC ...
0 votes
1 answer
67 views
Sending PWM signal over Cat5
I'm trying to send PWM signal to MOSFET gate to control 12VDC 2A motor. The NE555 circuit is built as shown in this article (https://www.build-electronic-circuits.com/555-pwm-circuit/) with the same ...
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-1 votes
1 answer
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Linear AC voltage to DC 5v or 10v PWM conversion
I have a vehicle with generator style speed signal generator and its output is linear from 0 -30VAC. This signal is used by the Dash mounted speedo without any issue. I now have a mandated requirement ...
1 vote
1 answer
85 views
3 'Phase' BLDC Motor Control using Raspberry Pi 5
I am making a project to control speed and position of multiple 3 Phase BLDC Motors using a Raspberry Pi 5. I am struggling with the number of PWM channels I will need and the lack thereof on the Pi ...
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2 answers
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Will 400 Mbps be enough to transmit a 5 kHz PWM signal?
PWM signal to be generated from MAX6966 at 5 kHz with duty cycle varying from 1% to 99%. This PWM signal is fed into a line driver SN65LVDS1. Then using a 10 meter shielded twisted pair of wire, this ...
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1 vote
1 answer
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Voltage Spikes with PWM Controlled Brushed Motor
I have disassembled a 20V cordless drill. It uses a two-lead brushed motor controlled via a PWM signal. Out of curiosity I connected both motor leads to an oscilloscope and measured both against a ...
0 votes
1 answer
104 views
PWM demodulator implementation
I was browsing the web for the prior works on the PWM demodulator implementations, and I found patent US4408166A, "Pulse width modulation decoder" from 1982. I cound not obtain the vo ...
-2 votes
4 answers
155 views
What’s the difference between using PWM and H-bridge circuits for controlling DC motors in robotics? [closed]
I’m working on a small robotics project and trying to control DC motors. I’ve come across terms like PWM motor control and H-bridge circuits, but I’m a bit confused. From what I understand, PWM is ...
