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Recent content by sparkytron

  1. S

    Futaba servo motor question

    The control loop/drive circuit for hobby servos is very simple. The input control pulse ranges from 1ms to 2ms with a typical duty cycle of 20ms. The rising edge of the input control pulse fires a monostable in the servo whose pulse duration is controlled by the position feedback pot (1ms to...
  2. S

    Á gui compiler to C++ to Linux

    Take a look at Kylix 3: **broken link removed**
  3. S

    SMT soldering , lot of questions

    Metcals are really good. Also take a look at: http://www.zeph.com/directory.htm
  4. S

    USB Connector - type A male connector for PCB mount

    Take a look at: Distributor (small quantities): http://www.digikey.com/scripts/us/dksus.dll?Detail?Ref=70664&Row=192550 Manufacturer: **broken link removed**
  5. S

    IPC-782 land pattern calculator

    land pattern calculator No, I have not tried it.
  6. S

    IPC-782 land pattern calculator

    ipc-782 Take a look at Ultra Librarian: hxxp://www.Accelerated-Designs.com
  7. S

    How can I shift the phase of a varying frequency signal to90

    sine signal shift How about using an op amp integrator plus inverter to create the cosine function? Integral(sin x) = -cos x + C
  8. S

    Protel nVisage, aldec and Modelsim?????

    Protel nVisage is just Protel DXP with the PCB layout part removed.
  9. S

    Mains Power Line modem???

    Take a look at: hxxp://www.echelon.com/products/oem/transceivers/powerline/plt_docs/pwrlinetutoall3.pdf
  10. S

    Damage of RS-485 Hub connected to few RS-485 units

    Is there any way that the power supply voltage as seen by the semiconductors reversed polarity?
  11. S

    Wireless LAN to LAN bridge

    It sounds like you want to use a "wireless ethernet bridge". For example: hxxp://www.digital-wireless.com/sem.htm hxxp://www.linksys.com/Products/product.asp?grid=22&prid=432
  12. S

    How to solder NiCd batteries ?

    how to solder batteries They are usually spot welded. Soldering would be very difficult without overheating the cell due to the large thermal heatsink capacity of the metal case.
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