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Are there any websites I can go to check the prices and motors available?

The motor required does not need to be high speed. It is basically a unwinder for a roll about 250kg, about 600mm diameter. I need to maintain constant tensional force of the material. It is pulled by a machine, which stops and shears the material. My proposed design is to control the speed of...

Can anyone advise me on the advantages and disadvantages of using AC or DC motors in speed/torque control?

Hi What choices do I have for converting a variable DC voltage into a duty cycle for input into the clock input of a logic unit?

If anyone is still reading this thread, maybe the problem is in the measurement of the resistance. The first measurement was made between the positive terminal and ground while the second measurement was made across the filament. Maybe the rest of the resistance was in the terminal itself. Cent

Can anyone tell me what are the advantages/disadvantages of normal DC motors over DC stepper motors when it comes to speed control?

I am presently on a project which requires the installation of a DC motor onto an existing structure. The motor will be speed-controlled by an axial potentiometer on a dancer roller. The machine at the other end will be starting and stopping rather frequently. Will I need a soft starter for my...