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  1. Arouse1973

    ID diode help

    It could be a Schottky diode they will usually have a lower forward voltage drop than the silicon diode. This depends on forward current obviously, or more accurately the current is dependant on applied voltage. Only one problem I can see with this is if you have a low reverse breakdown diode...
  2. Arouse1973

    Two phone batteries in parallel?

    "We are talking about two batteries for a cell phone. If one battery has a slightly lower voltage than the other, the flow of current will from one to the other will only last for a short period of time because the weaker battery will create a "floating charge." This voltage will prevent the...
  3. Arouse1973

    Two phone batteries in parallel?

    Ah yes your right Steve LiFeP04, but that's not as bad as LiMn2O2. Some battery technologies when placed in parallel exceed both the maximum charge and discharge rate as you put them together. This is why it is best to connect them when the state of charge is say 50%, this limits the charge and...
  4. Arouse1973

    ID diode help

    Class Kris PSML.
  5. Arouse1973

    Learning about voltage, amps and watts.

    If you use a standard LDO regulator or quasi LDO you should be able to do this with no problems. Just check the maximum voltage drop at that current from the datasheet. Adam
  6. Arouse1973

    what is this Circuit ?

    Yes I agree. I think we will leave this one as weird :) Thanks Lutz Adam
  7. Arouse1973

    Detaining max load capacitance before pulse transitions are distorted

    Absolutely Kris. There needs to be a level of acceptance for the circuit with regards the rolling off of the signal. Adam
  8. Arouse1973

    Learning about voltage, amps and watts.

    You don't need to change the transistor switch if you are drawing less than the maximum rating. The current in a d.c circuit is proportional to the applied voltage and resistance. So your 4.5 Amp circuit will have no problems running a 3.5 Amp circuit. But you can't do it the other way round. A...
  9. Arouse1973

    Buzz wire game design

    Hi Inspire. If I get time this week I will have a look for you. I am on holiday all week and have a few things to do. Someone might beat me to it though. Adam
  10. Arouse1973

    what is this Circuit ?

    Well as Kris would say "Butter My Buns" It certainly looks like a filter as you have drawn it Lutz, thank-you, but I am still having trouble. I get -60dB at about 1.57K. The problem I have with this circuit is the 157K and 22uF low pass filter on the input, the corner frequency works out to be...
  11. Arouse1973

    what is this Circuit ?

    Thanks Lutz. Adam
  12. Arouse1973

    Buzz wire game design

    Good Idea Jim. I would have thought the circuit the circuit could be made stable by using a crystal. And then maybe pull the crystal of frequency by touching the metal loop then using a simple F to V could detect this. just a thought Adam
  13. Arouse1973

    what is this Circuit ?

    I am confused now, sound like it is what I said at the start, but now it appears to be a filter also. It would be good if the OP could find out its use. Adam
  14. Arouse1973

    what is this Circuit ?

    I would like to see the circuit you used so I can copy it and put it into my simulator. Its just I must have done it wrong as I got nothing when I did it. Just post a screen capture of your circuit showing input and output nodes. But dont worry if you dont want to. I just would like to know more...
  15. Arouse1973

    what is this Circuit ?

    That sound good Lutz. Can you post your circuit. Thanks Adam
  16. Arouse1973

    what is this Circuit ?

    I wonder how the circuit input can do anything with a 157K feeding a 30R resistor. I did simulate this from 100Hz to 10K Hz and got nothing anywhere. Perhaps someone else could show it working in a real application. Adam
  17. Arouse1973

    what is this Circuit ?

    I did wonder why it had a large resistor on the output. Well I shall look at this very common configuration that I have never seen and will be educated. Cheers Adam
  18. Arouse1973

    what is this Circuit ?

    Really If this is true then I was wrong Kris, told you so :) Adam
  19. Arouse1973

    what is this Circuit ?

    Hi Kris, sorry about that I have re-drawn the circuit. Do you really think it's more complicated than that? I am surprised. But hay I am probably wrong as usual :) Cheers Adam
  20. Arouse1973

    what is this Circuit ?

    Guys here it is redrawn. As I said it's a voltage ref with large output resistance. It's not designed to have any signals as inputs. The OP must have the label mistaken. Or I mean the other side of the 157K resistor could well be an input, but to something else. Adam
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