speed

  1. robertl

    3 phase 2 speed motor from single phase

    Hello everyone I have just bought a new lathe, (used) its on its way to me from other end of the country now. I have only just realised i may have an issue. The machine is 3 phase and i was intending to go down the VFD route but because its a dual speed motor im not sure i can. See attached...
  2. D

    AC to DC motor thyristors speed and direction control

    So i have been given this question: You have also been asked to produce a circuit design that can control the speed and direction of a conveyor with a AC to DC motor thyristor system. What are the the operational features (how it works with speed and direction circuit diagram/s) I am really...
  3. D

    Transistor H-bridge system for a conveyor motor with speed control property's

    Hey, I've been asked a question 'what are operational systems on Transistor H-bridge system for a conveyor motor with speed control property's'. I know that system I've put below would work for a lower voltage application, I just cant seem to find any information on high voltage applications. I...
  4. R

    I would like some help to bypass a touchscreen climate control (strictly fan speed and vent settings (eg, floor/dash).

    I would like some help to bypass a touchscreen climate control (strictly fan speed and vent settings (eg, floor/dash). Background - 2003 Acura mdx. For some idiotic reason Acura designed the climate control fan speed and vent configuration into the touch screen. Not a terrible thing but...
  5. S

    125 HP motor speed problem

    We have a 125 HP motor. After rewinding, it runs at low speed at full load, but runs at rated RPM at no load. Any ideas why?
  6. S

    what do these 380v wiring colours mean, I want to use with a 220v vfd. it may have had speed control

    Hello, I am a woodworker who has got a large old power feed, its 380v and i want someone to rewire to a 220v vfd for me, can someone please tell me what these old colour codes mean. I bought the machine in Scotland.I can't find any easy diagrams online.I think its a good few years old.Thank you...
  7. happysteve

    Brushless motor battery drills - unsatisfactory speed control, or just this model?

    Have had a Makita BHP458 (non-brushless) hammer drill for years, I love it, it's pretty indestructable and the torque's great, but the chuck's finally going. They seem to be moving to brushless motors now (for most of their combi drills). I've only recently bought a battery SDS drill (after 2...
  8. E

    Can anyone help me identify the 3 speed coloring of my cooker hood connection. Please look at the photos

    Hi Can someone help me please? I got a new cookerhood motor and I know the color coding for different speeds. But I need to find out the existing speed color coding to to connect to it. Could someone look at the photos and tell me which color is which? Its a 3 speed setting. Thanks in advance.
  9. J

    Would having upstairs/downstairs rings on same rcd speed up powerline adaptors

    Hi i'm trying to get the best speed i can from powerline adaptors scattered around the house. between the downstairs ones the speed is 784mbps, however to the upstairs ones only get 40mbps. i've eliminated all the interference i can around the house that was affecting the speed. if the upstairs...
  10. S

    Fan and speed controller

    Hello, I am new to this forum and recently have built a vaulted ceiling kitchen extension , I have run 2 4 inch flat duct from the kitchen across the vaulted ceiling into the existing loft space I have also ran a 3core +e to the loft from the kitchen island for a speed controller .. what I...
  11. Darrin Brand

    Inverter speed control help

    Can any one help ? Emerson command sk I've got a 3ph motor from a boilie making machine that has the above attached to it , I've reset the parameters to factory and input the motor parameters to the relevant fields but still can't get it to work , it's alternating between a tr01 fault or a...
  12. Ironbones

    DC circuit breakers VS semiconductor fuses high speed.

    Hi all. Just to start off still learning. Could any one help me with this and put me right if I am incorrect. I would like to understand the preference or reason for opting for DC breakers or semiconductor high speed fuses, when been used in low voltage DC circuit. I understand that...
  13. N

    Can I use a speed controller with this fan

    Just wondering can I install a speed controller on the fan below. I want to make a homemade air filter but its a huge fan. If so do you know suitable spec'd ones. Thanks im2501480 - http://www.canfan.nl/im2501480.html (New models have them built in)
  14. S

    2 speed hood fan wiring

    Hope someone can help I’ve removed a 2 speed extractor motor from cooker hood with 4 cables: white, blue, black and orange. Unfortunately the replacement motors cables are white, black, brown and red. Can anyone advice on how to wire the new motor in
  15. L

    Better speed control required for 24v dc mobility motor

    Hello all, hope this is posted in the right place. You'll probably guess after reading this post for help that i'm not an electrician! I've built a 4-wheel buggy utilising a mobility scooter motor and wish to slow down the acceleration rate. I am utilising the twist grip throttle from a...
  16. G

    Pedestal Fan - bypass speed control unit - Direct connection

    Hi, The speed controller on my pedestal fan is broken and I thought of bypassing it by connecting the power supply directly to the fan motor. When I opened casing, I found two wires (Blue and Brown) coming in from the plugs end and four wires (Red, Black, Blue and White) coming from the motor...
    • ggl
    • Thread
    • bypass connection control direct fan speed unit
    • Replies: 5
    • Forum: UK Electrical Forum
  17. O

    UK Speed Limits for vans ....................

    OK, hands up if you weren't aware of these : Speed limits - https://www.gov.uk/speed-limits I wasn't! Not been stopped yet!
  18. E

    if i could run faster than the speed of light...

    if i started running from where i am now faster than the speed of light could i bump into myself and trip myself up before i begin running?:runner::runner:
  19. C

    Manrose MF100 with low speed via external control?

    I’be seen a manual for a Manrose MF100 extractor fan (inline) with the option for two speeds to be selected via an external switch, basically it switches between two line inputs to the fan. I bought one and it only has a jumper switch inside the connection box to select the different speeds...
  20. D

    Bmw Speed sensor pulse wire

    As above, I purchased a front parking sensor kit for my BMW f20 118d 2012. The system requires connection to a speed pulse wire to activate the sensors below a certain speed. Does anyone know what colour wire it is and where is the best place to tap in to it?

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