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  1. dorke

    Oring of two Clocks

    Yes, a missing pulse application doable with a 555 as well.
  2. dorke

    Oring of two Clocks

    Harald, Your circuit takes into account that when the 225Khz stops it stops at "0". Here is a modified version that doesn't care if it stops at "0" or "1". In blue 225Khz is present ,in red it is missing.
  3. dorke

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    In series,you will get 24V @7,5A. This is only possible if the P.S are "floating" i.e the "-" is not connected to earth GND.
  4. dorke

    Clock in multisim

    Welcome to EP. Please post directly here a pdf file or JPEG
  5. dorke

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    Possible,but 24V PS instead of 12v is needed.
  6. dorke

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    What is the current of motor under normal operation?
  7. dorke

    Broken Plastic clip on/off switch

    Welcome to EP. I think epoxy glue may be strong enough to hold the board in place. Apply at the Red places,if needed you can add a small piece of plastic/meta//wood to bridge gaps.
  8. dorke

    general pull down/pull up microcontroller input/output questions

    The 2.2K is for limiting the current through the Tr. while maintaining the zener voltage.
  9. dorke

    Can't comprehend Texas Instruments' Error Amplifier.

    I think this may be of help to you
  10. dorke

    Toshiba CRT TV Fuzzy image

    The high pitch noise is a classical fly-back problem. Glad to hear you fixed it.
  11. dorke

    Can someone please explain this circuit for me?

    Looking at the TIP31 SOA graph, the max current of this power supply can be 2A.
  12. dorke

    Using 2 Sevent Segment to display only 0-15 decimal

    Absolutly, my bad ,the input is binary not BCD.
  13. dorke

    Clean square waves using a 555 timer?

    In memory of Hans Camenzind the inventor of the 555 timer. I added an entry here. It is very interesting to hear the voice recordings. As a final note for this thread ,I would like to repeat one conclusion: Do not use the #3 pin in a "self generating,RC timing" circuit of the 555. It will...
  14. dorke

    Electronics Talk - interesting interviews and shows

    Hans Camenzind - the inventor of the 555 timer. The interview was probably at around 2003. Here are some voice recordings. It is interesting to hear his self-criticism on the design. (#4) and here are the transcripts
  15. dorke

    DIY buck converter (& Sexy Scope)

    The scope looks cool. The explanation about SMPS is rather lame...;)
  16. dorke

    DIY buck converter (& Sexy Scope)

    Why do you wonder? That is simple and works fine;)
  17. dorke

    LCD Dented, or firmware problem?

    Welcome to EP. What good is voting for? It can be either of the things both a firmware problem or a bad display. I think you should contact the LCD manufacture(Philips? ),it should have warranty and tech help. You will get the best help from them.
  18. dorke

    Camera Power Help

    The AC-LS5 AC is not a charger it is a p.s only. There is the BC-CS2A/CS2B Ni-MH battery charger, no good for Li-on batteries! You can see them on page 2 of the pdf you attached.
  19. dorke

    Camera Power Help

    Thanks
  20. dorke

    Using 2 Sevent Segment to display only 0-15 decimal

    What you are asked to do is build a decoder. It uses only combinatorial logic (no FFs). build the truth tables an solve them,if you look carefully you can see some "shortcuts" in the truth tables Should look like this:
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