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  1. Arouse1973

    Differences between LTSpice and Real circuit and why?

    What do you want the dark switch to do?
  2. Arouse1973

    12v rail vs 5v rail computer psu

    Ah no just read the thread again. If the saw was down connecting it to -12 Volts would have pushed it further into the bed causing the drill to stall and the PSU to limit at 0.8 A, possibly. Adam
  3. Arouse1973

    12v rail vs 5v rail computer psu

    Depends on which way he had his drill to start with :) Or he may of had the direction switch the other way.
  4. Arouse1973

    Differences between LTSpice and Real circuit and why?

    This LED has a max 3.5 Vf. It's a white LED. Also are your transistor suppose to be configured as Darlington arrangement? Adam
  5. Arouse1973

    Differences between LTSpice and Real circuit and why?

    Hi John You using the same LED? Adam
  6. Arouse1973

    12v rail vs 5v rail computer psu

    Are you sure you connected the +12 V and not the -12 V? The +12V on newer PSU can be good for 16A. The -12 V is only good for about 0.8 A. Just thought I would ask. Adam
  7. Arouse1973

    need help with RLC circuit

    Your IC and IL seem correct but I don't think your IT is. It's too high. Adam
  8. Arouse1973

    need help with RLC circuit

    How far have you got? You need to show us what you have done and what you don't understand first. Adam
  9. Arouse1973

    Hi, all.

    Hello Seamac. Welcome to EP, hope you enjoy the ride :) Adam
  10. Arouse1973

    Decoupling a cmos based 555?

    This will be interesting John. Can't wait to see what people think! Adam
  11. Arouse1973

    I have a broken linear encoder that I want to repair...

    Thanks Dan. When you have time can you take a picture of the other side of the PCB? Adam
  12. Arouse1973

    Need Help On CM8870 IC ...

    Looks like this device can only source 0.8 mA (800 uA). This probably won't be enough to light the LEDs. You could try and connect the LEDs from the positive supply rail and sink current through them instead, this will allow you 2.5 mA. This still might not be enough to light the LED to the...
  13. Arouse1973

    Conditioning Electronics

    LOL been there done that :) Adam
  14. Arouse1973

    I have a broken linear encoder that I want to repair...

    Those three resistors look like they could do with a re-solder. One looks like its moved quite a bit. Or not centered during reflow, an indication of not enough solder or too low heat. Adam
  15. Arouse1973

    Capacitor question

    Condenser capacitors range from 0.25 to 0.29 micro farads or (uF) Having the same result for both using a DMM should tell you something.... These are high voltage capacitors and you can't test them properly with your bog standard meters. Adam
  16. Arouse1973

    I have a broken linear encoder that I want to repair...

    Hi Dan Boy Can you take some better pictures please they are a bit unclear. We can't see the extent of the damage Thanks Adam
  17. Arouse1973

    voice module help please

    I doubt it, the input impedance is going to be around 10K. Something odd is happening for the first message to play and the others only for a short amount of time. Adam
  18. Arouse1973

    voice module help please

    Yeah but also he said one message worked with the amp and the others cut short. Seems strange maybe something was getting hot? Adam
  19. Arouse1973

    Conditioning Electronics

    Blonde moment, I meant inverting sorry. :) I worked out the voltage from the divider right on the input pin duhh. It was late at night, that's my excuse :) Adam
  20. Arouse1973

    voice module help please

    Um I wonder why only one message works and the others cut short. Is the first message shorter in length than the time the other messages cut out after. Adam
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