dc motor control

  1. D

    Reverse polarity DC motor cyclic timer

    i want to create DC Motor Reverse Polarity Cyclic Timer Switch, here i post some pictures that uses 555 timer ic. can anyone make working diagram from pictures? thank you.
  2. John A Bonilla

    DC Motor Driver with Limit Circuit Not Working

    Hi Everyone, I have the circuit that controls a dc motor using the L9110s motor driver. It is powered by a 1.5V AAA battery that is stepped up by the TI TPS61027DRCR TO 5V. The goal of this circuit is that when the ITR8307/TR8 Optical IR Sensor sees a white stopping plate, the motor no longer...
  3. A

    DC Shunt wound motor flashover

    Hello all, new member here so I definitely apologize if I am placing this thread in the wrong area, however this issue seems to be a power system related issue, so I thought this would be the most suitable location. I have a lot of background context to give, so please make sure you read over...
  4. E

    Treadmill (Proteus mtm 5600) power board diagnose fault?

    I have a proteus mtm-5600 treadmill which is now showing a e1 error and the belt does not move. The output voltage on the power board reads around 72 vdc whereas the motor needs 180 vdc. i have a picture of the board at: https://snipboard.io/erzmfH.jpg What can i test with a multimeter? i am...
  5. M

    Control Small DC Motor to Turn to Position then Return to Original Position with Switch

    Hi, I have a small project that requires a small turn of about 45 degrees that will return to the original position and it needs to be controlled with a switch. The motor I have was cheap so I'm not bothered if you recommend that I get something else, just needs to be very small. Current motor...
  6. M

    Powering a DC Motor using a Bridge Rectifier

    Hello, My treadmill has been sitting around ever since the motor-controller board broke. Since I could not find a replacement for the board, I thought why not build a power supply myself. I do not need fancy speed control; one single speed value is enough for me, probably the value that makes...
  7. T

    New controller wires for dc motor

    Greetings, I am new to this esteemed forum and require some assistance and advice. I am trying to locate the related V+ and V- on my treadmill board (B102S S07 Shanghai Elect) to hook up on a Signal Freq Gen (XY-KPWM) to run my DC motor. Background: My treadmill console acts faulty...
  8. A

    Brushed 12v DC motor active speed control (no arduino)

    Hi, I want to actively control DC motor speed and I am looking for some hints on the corresponding control circuit. What I have found till now is classical control schems with Potentiometers (mechanical), however, this is not convenient for my use case. I am looking for a circuit that I can...
  9. Chiho9

    Reversing a dc motor direction when object is detected

    Hi everyone , Ir proximity sensors detects object nearby. I ones used it to drive a DC motor. So here's my problem, I would like to drive my DC motor and reduce the speed with a potentiometer and would also like to control the directions (back and forth). Most back and forth movements are...
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