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  1. Minder

    Doubt about a ne555

    http://www.talkingelectronics.com/projects/50%20-%20555%20Circuits/50%20-%20555%20Circuits.html M.
  2. Minder

    Single to three phase... sort of...

    That is 2 phase or split phase for a 1ph motor, the common way to generate 3 phase from 1ph is a RPC, (Rotary Phase Convertor) using a 3ph motor and series of caps to produce/generate the 3rd phase, the other two being the 240v 1ph conductors. There is also the commercial Phase Perfect which...
  3. Minder

    Electric Motor Conversion European - USA

    A couple of considerations when using it in N.A. is to make any disconnect D.P. to take care of what was previously a N and is now a 'live' conductor L2, Like wise it should also be fused in tandem to the other live L1. IF there was any 120v to 240v transformer used, One terminal on the...
  4. Minder

    Electric Motor Conversion European - USA

    I was a practicing electrician in the UK and I don't know of any configuration where the reversing switch would normally be (re)-referenced to 'frame ground'? As in N.A. the neutral will not be referenced or taken to ground anywhere in the installation apart from the originating source. They are...
  5. Minder

    Newly coiled motor burnt out

    Doesn't everywhere in the UK have a long history!:D I had a very good,well paid job that I liked as an Industrial Electronics Technician, married, two kids, a house. Just felt like a change.o_O M.
  6. Minder

    Newly coiled motor burnt out

    Hmm... 7.5hp and no O/L, Tut Tut;) BTW I did my apprenticeship in Oxford.! M.
  7. Minder

    Electric Motor Conversion European - USA

    For one it is the other way around, N.A., is 60Hz which means your motor will run that much higher rpm, which is also dependant on the pole count of the motor, 2 pole or 4 pole.. You cannot run it on NA 120v, you do have the 240v available which should be fine for that motor unless you have...
  8. Minder

    Circuit design

    As suggested, a timer could be built around the 555/556 I.C. If purchasing off the shelf: Attached timer types. M.
  9. Minder

    Newly coiled motor burnt out

    Strange the O/L didn't detect that, normally it would not be on very long if single phasing. M.
  10. Minder

    Circuit design

    So basically a timer, plenty of those out there. M.
  11. Minder

    Control the dc motor 40A controller

    NTP60N06L logic level mosfet? Max.
  12. Minder

    Help with an inductive heating circuit!

    With those L/C components I assume you are aiming for quite a high frequency? Google Royer HF circuits for some ideas. M.
  13. Minder

    Can you suggest internet television hardware ?

    One of the Android devices running Kodi menus etc etc, World wide channels available. Hooks to router via Ethernet cable or Wi-Fi. M.
  14. Minder

    Grounding a blower motor

    Make that two.;) M.
  15. Minder

    Grounding a blower motor

    Normally if a mains fed device is not double insulated, then it should be earth grounded to the device or motor frame. M.
  16. Minder

    Newbie help please- Omron relay

    That series was slated for obsolescence in Apr 2015 so you may have to find a sub by the same footprint. Is this the stake-on or PCCT version? A pic may help. M.
  17. Minder

    What type of UART I need ?

    The device in the link operates on 5v but for the price it would be cheap/easy to see if it operates on 3,3v. Why did he say you need 3.3v? The device is not a UART, but appears to be a USB/COM port converter by the look of it? M.
  18. Minder

    Low Pass Filter For Ground And Neutral

    The fact is says 'AGND' I assume this is analogue ground not Earth Ground. This sort of high lights the problem where the term GND is used across the board, whether earth ground or not. It is not allowed in most jurisdictions to connect neutral and earth ground anywhere but at the service or...
  19. Minder

    Testing Salvaged Motors

    Using the IRF540 you would use the motor on the Drain side, the Source would connect to Common. M.
  20. Minder

    Controversial schematic symbol

    Pretty much the same as the use of the Ground/Earth/Chassis/Logic common symbols. Very Rare to see the correct one used.:( M.
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