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  1. ante1

    Convert Current

    maddy, I would use a LM78S08 on a small heatsink and a pair of caps, that
  2. ante1

    stepper motor controller ucn5804

    Kumar, Welcome to this forum. The circuit should work the way it is shown in the data sheet. Are you using a hefty stepper motor? What voltage are you supplying to it? You say the IC gets hot, are the motor running or not?
  3. ante1

    My computer is slowing down!!

    trigger, Ok, boot from CD-Rom then
  4. ante1

    Schematics Variable current 12v 60A to 0A

    Any low ESR cap will do the job. As I think you know a capacitor resists any change in voltage, so does any other component with a capacitance. This is what makes a voltage change require high current. The driver (ICL7667) will consume high current to switch the mosfets in and out rapidly. A low...
  5. ante1

    Problem with LEAD-ACID Battery

    Imaging a forklift battery 80V and 700Ah this is a 1700kg battery, I have heard one blow (in a distance) and seen the remains. Scary thing! :o :o :o
  6. ante1

    Convert Current

    maddy, Does the camera draw 800mA or is this the capacity of your battery?
  7. ante1

    0-30 Vdc Stabilized Power Supply

    Emiliano, How much exactly is incredible ripple? And under which conditions? What value have you chosen for C1? What is the voltage over C1 at maximun power 25VDC x 3.10amp? Are you sure it is ripple you are measuring?
  8. ante1

    My computer is slowing down!!

    trigger, Where are your safety start floppy disks?
  9. ante1

    117L7 tube test

    Mike, Well, then I guess it
  10. ante1

    Best design software and board lab

    Dig, Welcome to this forum. Eagle is good for schematics and pcb design: http://www.cadsoft.de/ and it
  11. ante1

    117L7 tube test

    Tubby, It's many years since I messed around with tubes, and I have never made any transmitters using tubes. I have serviced some Hagstrom and Marshall amps and I once built an FM stereo receiver-amplifier in the early seventies. Where on the tubetester-scale is
  12. ante1

    Schematics Variable current 12v 60A to 0A

    Dazza, The dropout voltage for a standard regulator is 2Volts. A 78S09 (the S is a 2A regulator- the ICL7667 require this) regulator will work down to 11Volts but no less. This is fine for a 12Volts system, but when switching to a 24Volts system, which can be as high as 28.5V suddenly, the 78S09...
  13. ante1

    Schematics Variable current 12v 60A to 0A

    Audioguru, Questions: Which characteristics to look for when hunting for mosfets besides cheap? ;D The FDP7030L have very low RDSon and can handle 30A (300A pulse) 125W and so on, what do you think is the draw backs? What exactly do you mean,
  14. ante1

    I wish I knew

    Kevin, I haven
  15. ante1

    Schematics Variable current 12v 60A to 0A

    Audioguru, OK, low component count is good. I only put them there since I found them on some app sheet that many years ago where they where said to protect the mosfets (BUK416). If you say they are not good for this circuit, so be it. One question: isn
  16. ante1

    My computer is slowing down!!

    Trigger, I think you just give up to easy! Suraj, I am very happy with Norton but I never use NTFS, it is too much pain when shearing files.
  17. ante1

    Schematics Variable current 12v 60A to 0A

    Dazza, I am sorry, but it is not possible to add voltages like that. The output will only supply about 8.4 Volts (the highest voltage
  18. ante1

    My computer is slowing down!!

    Rhonn, I use Norton System Works and it has not failed me yet! But i run W2kP so I don't know how it will perform with XP.
  19. ante1

    cyclic timer

    Alexander, Welcome to this forum. It
  20. ante1

    Schematics Variable current 12v 60A to 0A

    Well, as far as I can see the pin numbers matches on the op-amps. C1, C2, L1 is a protective filter which is supposed to
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