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  1. Martaine2005

    Wiring pot as voltage divider across polarities

    Can I ask a stupid question here? I cannot get my head around a VR having 0V in the centre. If it's 520k VR , wouldn't the centre point for the wiper be 260k? Sorry, that really confuses me. An explanation for an idiot would be good. Martin
  2. Martaine2005

    Drill bits for homemade PCBs?

    On a bike!!
  3. Martaine2005

    Drill bits for homemade PCBs?

    Are you saying his wifes picture is not good? I think she is beautiful.:cool: Martin
  4. Martaine2005

    Solving boolean algebra task - HELP

    Hi Zeljo, That's really easy. Ask @Arouse1973 Martin
  5. Martaine2005

    Thinking about fully discharging (deep cycling) my power tool batteries to try and revive them

    Hi Robert, My 29 year old nicads still work just fine. Although flight time does deminish. I have always charged fully three or four times a week from the last charge state and completely drained them by leaving my receiver on all night once or twice a week. I also fast charged on the field too...
  6. Martaine2005

    Drill bits for homemade PCBs?

    Lol, like the above technical data?:eek: Forums are not just serious sites for geeks!! You have to have a little light hearted side too. But sometimes I cannot help myself!! FWIW, I like you too uncle Chris:D I like everybody on here. It's the best forum for me to learn. Everybody is so...
  7. Martaine2005

    Roberts radio

    That radio has a switch to choose rechargeables or alkaline batteries. I have already said to check that switch. There obviously is a lot of leakage from the main circuit or charging circuit. Martin
  8. Martaine2005

    Drill bits for homemade PCBs?

  9. Martaine2005

    Roberts radio

    Hi Graham, Here is a snippet from the user manual. "We would recommend for economy that the duologic is used via the AC adaptor whenever possible with battery operation for occasional or stand-by use only. If extended listening using batteries is anticipated, then the use of rechargeable...
  10. Martaine2005

    Roberts radio

    What model radio is it? I would be very surprised if you HAVE to run it on batteries! The adaptor should be to run it when you DON'T want it on batteries. It also sounds like the adaptor needs filtering. Let me have a read of the specific model first. Martin
  11. Martaine2005

    Roberts radio

    Hi Graham, if the LCD is still lit after power off, that would explain draining the batteries. It seems like you may have to do some invasive surgery. The switch under the batteries sounds like an accident waiting to happen too. Does the LCD stay 'slightly' lit when on power adaptor with no...
  12. Martaine2005

    Problems with a Lamp Project and Dimmer Module/Switch.

    On a normal UK dimmer, the minimum loads are 30-40 watts. Sometimes 60 watts. And as a note. It really doesn't matter which half of the the phase you choose. They are both positive. Martin
  13. Martaine2005

    Roberts radio

    Apart from the batteries as Davenn suggested. Are you testing this with wires all tangled up? Try a re-test with nice neat wiring going to the radio without other chargers or adapters connected. Martin
  14. Martaine2005

    Problems with a Lamp Project and Dimmer Module/Switch.

    As Minder has already stated, if your load wasn't too much!! But they also have a minimum load too. I couldn't see that in the link provided. Do you know the minimum load? Martin
  15. Martaine2005

    Activate transistor with piezo disc

    I just did exactly that... Andre'-Marie Ampere'. In the French language 'intensite' or something similar is intensity. Obvious really when you know..:p It finally makes sense... Martin
  16. Martaine2005

    Activate transistor with piezo disc

    Hey Chris, are you using the E=I*R? I think Sweden uses V. I could be wrong though. The thread is quite a read. Martin
  17. Martaine2005

    Wow...he calls it the Scariac!!

    I thought they were quite tame. Stupid, yes, but tame. Andy @ Photonicinduction uses his own house for experiments. Even his wife had enough and left lol.
  18. Martaine2005

    Please identify this component

    That is so funny, You cannot even joke without somebody with a forehead larger than mine selling a fix!! Reseeding hair is one thing, believing you can fix it! That is another thing. Going on National TV with a hair product!! And lacking hair to boot.... Priceless..
  19. Martaine2005

    Please identify this component

    If you want your hair to grow, QVC is your world. They really work.. I personally buy the in the ear and eye brow growers. I have yet to use the nose hair grower. Have you tried that? Please keep us informed. Martin
  20. Martaine2005

    internet

    Have you actually checked your speed online? There are online checks. martin
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