Tagged Questions

4
votes
3answers
145 views

Driving Permanent Magnet DC Motor via PWM

SUMMARY: I am currently trying to finish up a DIY project I've been working on for a while: Building an electric potters wheel. I acquired a treadmill and salvaged quite a few good parts from it, and ...
2
votes
2answers
541 views

TL494CN and error amplifier

I'm designing a PWM output for a DC motor and I'm using TL494CN chip. It got two error amplifiers and one feedback. I can't understand why there are error amplifiers and a feedback there? What does ...
0
votes
2answers
136 views

Power source for 12V PWM controlled light

I'd like to build a PWM-controlled light circuit. Since I'm not an electrician, I want to avoid working with 230 V as much as possible. I imagined an Arduino (fPWM = 460 Hz) controlling a MOSFET which ...
3
votes
3answers
1k views

Driving DC motor rated at 24VDC@2A Max with 50VDC@10A 40% duty cycle possible?

Upcoming project I need to speed control DC motor rated at 24VDC@2A Max. Lab has 12VDC@2A and 50VDC@10A PSU only. I thinking why not try run DC motor rated at 24VDC@2A Max with 50VDC@10A PSU if I ...
1
vote
3answers
332 views

power source affecting my IR receiver

I have an arduino with a simple 3-pin IR receiver like you would find at radio shack. The receiver works fine when the power supply to the arduino is 6 AA batteries, but not when the power supply is a ...