1. T

    DC motor current limiter

    Background: I'm working with an existing motor+driver board with Vin being supplied by a 4.2V LiPo -> TP4056 Charger Protection Board -> Boost Voltage Regulator. I've also got another subcircuit attached to the end of the TP4056 module through another voltage regulator and diode that powers a...
  2. G

    How to attach wooden flywheel to DC motor.

    What's the best way of attaching a wooden (plywood) flywheel to the shaft of a DC motor? The flywheel is relatively small (4 inches in diameter). I'm still deciding on the motor, but the diameter of the motor shaft will probably be somewhere around 5/16 inch. I was thinking of just drilling a...
  3. M

    Treadmill DC motor receiving higher than rated voltage.

    Hello, My treadmill stopped working (i.e. belt no longer moves) with a loud popping sound. When I inspected the motor-controller board I found a damaged 22 ohms resistor that I replaced. Then, I decided to see if the board works fine, so I put the board back and I used my DMM to measure the...
  4. S

    Attempting to design an automated car shade, need help with the circuitry.

    Hello! I am trying to design a car shade (the thing you put up in your windshield to block the sun) that is automatic with the press of a button. I have an idea of how it will work and the design, but I am struggling with the circuit. Here is some background: The automatic shade will be rolled...
  5. katerineblankca

    Confirming Circuit Configuration.

    Hello, I am in a research team and is designing a circuit system for powering a motor with battery and supercapacitor. The battery and supercapacitor powers the motor separately and the motor gives regeneration power back to the supercapacitor (motor driver allows for regen). Can experts in this...
  6. reharik

    Convert 180vdc to 90vdc?

    Hi, I'm trying to to find a dc drive that will power a higher horsepower treadmill motor ~3-4hp. All the drives I've found will be like 1.5hp @ 90vdc/3hp @ 180vdc. But I don't have a 180vdc motor, the motors I'm looking at are all 130vdc. So I'm not sure what to do about that. Is there a...
  7. F

    dc motor control with 555 timer ic

    Hello İm tring first circiut. But i need implement this circuit with lm35 (temperature sensor ) . How i can do it ? if i use just potantiometre instead lm35 , can this ciruit can start ?