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  1. Arouse1973

    Not getting the ideal 555 output

    Yes that I need to wear my glasses:eek:
  2. Arouse1973

    Not getting the ideal 555 output

    Oh wonderful Martin, thanks. Adam
  3. Arouse1973

    Not getting the ideal 555 output

    Hello I am really struggling to see the picture clearly. Would you be able to take a closer screen grab. Separate them into more than one section if you need to. Just make sure you overlap the section a little so we can see where they connect to on the other section. Adam
  4. Arouse1973

    help adapting a transformer to battery external laptop battery charger cable

    LOL, brilliant, so talented, electronics and culinary skills, we're living the dream on here. Adam
  5. Arouse1973

    12v rail vs 5v rail computer psu

    I don't think MARTIN's comments were un-just. Colin is yes an experienced guy. But if he is going to carry on with his blunt replies then it is not worth him carrying on in my opinion he just irritates the newcomers. There is nothing wrong in telling him that what he said could have been useful...
  6. Arouse1973

    Female barrel connector

    Yes take the PSU with you as Martin said. That way they will be able to try and match the jack plug for you. Adam
  7. Arouse1973

    ESC for brusheless motor

    Try with a 20 ms delay between the rising edges of the pulses. Adam
  8. Arouse1973

    Female barrel connector

    Hello Can you take a picture and post it here? Adam
  9. Arouse1973

    ESC for brusheless motor

    You need specific timings for RC equipment control. Here is a picture of some common timings used. Thanks Adam
  10. Arouse1973

    More efficient LDR "dark" switch?

    What circuit would you prefer to use, lets get one of them working. You also learn from good advice, that's why most of us are here. To learn and to help... so don't worry. I still forget to turn the PSU on even now :) Adam
  11. Arouse1973

    More efficient LDR "dark" switch?

    Hi John Are you using Colin's circuit? with the only modification being the POT and the transistors? Adam
  12. Arouse1973

    12v rail vs 5v rail computer psu

    That's true enough M....a valid point. Adam
  13. Arouse1973

    12v rail vs 5v rail computer psu

    I think most modern drills have controllers in them (PWM), and even on low speed under load I am guessing this is still too much current for the PSU. Adam
  14. Arouse1973

    Differences between LTSpice and Real circuit and why?

    Yes you can use a phototransistor to switch another transistor. You could use a MOSFET for this. But it won't be a clean switch unless it goes from dark to light quickly. If your talking about daylight going to dark then you need a faster switch really. You can make Schmitt triggers from...
  15. Arouse1973

    12v rail vs 5v rail computer psu

    Bingo...... Looks like on load they can draw considerable current....... back of the net Adam
  16. Arouse1973

    12v rail vs 5v rail computer psu

    Kiss Kiss! I guess he used -12V and not +12V. So ok he has the switch in the right position. 5 Volts makes it go up, yep no probs their. So he brings the saw down again. This time he connects -12 V and the drill tries to go down, but it's already down so it stalls and the PSU current limits. If...
  17. Arouse1973

    Differences between LTSpice and Real circuit and why?

    I have always found photo diodes or photo transistor good for this sort of thing. Adam
  18. Arouse1973

    Differences between LTSpice and Real circuit and why?

    I mean design a low power circuit which draws virtually no current when off but can supply 3.4 mA when the LDR triggers it. Maybe a low power comparator or Schmitt trigger. Adam
  19. Arouse1973

    Basic electronics

    Hi Anders Sorry but what is the actual question? Bring down what voltage? What do you want to work out? Adam
  20. Arouse1973

    Differences between LTSpice and Real circuit and why?

    I am not that familiar with 555 timers as you know :) I guess you could look at using the reset pin. If you are worried about current drain and require the power to be switched you could use an LDR power switch. What current does the whole circuit draw when on, do you know? Adam
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