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  1. ante1

    Power dissipation limiter

    OK, so you mean this : http://electronics-lab.com/projects/power/011/index.html That’s an interesting approach; I remember I have tried something similar once. I’ll see if I can find the schematic.
  2. ante1

    What is holding switch mode PSUs back?

    Where I live I can buy a computer PSU (450W) for less than $20US. As everyone knows they are multiple voltage PSUs very compact and light. It shouldn’t be difficult to produce say a 2 X 40V 2 X 8A for the same amount and with the same physical size.  BTW. A 40V 40A unit is not a bench PSU...
  3. ante1

    Power dissipation limiter

    How about Q2s base? Just left open? How does this work?
  4. ante1

    What is holding switch mode PSUs back?

    Hi Zeppelin, The 100% load swing means that a current swing (in this case) 0 to 5A creates less than 10mV change in the output voltage and less than 5mA in the output current! Ripple at nominal load (in this case 5A) is +- 15mV RMS. Not bad, I’d say! ;)
  5. ante1

    Comment about this design...

    Yes I know what you are getting at; it’s not the first time this discussion has been up!  ;D Let’s do it your way; let’s change the resistor for a 120R and we’re really safe!  ;)
  6. ante1

    Power dissipation limiter

    Hi Paul, Welcome to our forum. The heatsink you need shouldn’t be inside the case anyway to be most effective! To help you more in detail we need the schematic to see what could be changed.
  7. ante1

    CRO

    Maybe nobody has a clue what you are talking about!
  8. ante1

    Comment about this design...

    Hi AG, Well, Gary built and tested it without any problems!
  9. ante1

    What is holding switch mode PSUs back?

    Hi Trigger, I have to disagree; when I was looking for a bench PSU I found that a linear one with the same data was twice as expensive as the one above!
  10. ante1

    Comment about this design...

    Hi kebloks, Welcome to our forum! Looks good, try it!
  11. ante1

    Current Sink for LEDs

    I believe it would work more reliable with only one LED in series with each transistor since the voltage is low.
  12. ante1

    Does the Magnet with a Staurated Core get stronger if we Increase Current?

    Hi Shahriar, I don’t know what to explain but if you keep the electromagnet cool of even better super cool then it will be more powerful.
  13. ante1

    What is holding switch mode PSUs back?

    Hi Zepplein, Here is some info about my bench PSU, I’ve got the one with 0 – 40V & 0 – 5A, it’s also available as 0 – 20V & 0 – 10A. http://www.kjell.com/filarkiv/SUPPORTPDF/41-50/44/44311/44311.pdf Here is another one similar with a different name on it...
  14. ante1

    Current Sink for LEDs

    OK Nick, I did misunderstand your question!  :-[  I thought you needed regulated (limited) current for the LED’s! I can see now you are using a resistor for this. So this circuit does not work? What is trigging the base of the transistor?
  15. ante1

    RC Car

    The motor does not have to be bigger to be stronger, the magnets and the armature winding decides the torque and power. You can re-wind the rotor (armature) with less turns of a greater gauge wire to get more power. It will of curse consume more power from the batterys too! ;)
  16. ante1

    Current Sink for LEDs

    Hi Nick, Why not use the LM317 or LM350?
  17. ante1

    efficient 12v to 5v regulator chip.

    Hi Nick, It depends on the power dissipation in the LM323 and the available current on the input side!
  18. ante1

    Does the Magnet with a Staurated Core get stronger if we Increase Current?

    By lowering the temperature of the core and coil you can get some more magnetic power.
  19. ante1

    rechargeable battries

    Your best choice is to find the webpage for the battery manufacturer and you will get the correct information.
  20. ante1

    Data Transmission using Xmitters

    It depends on how you use the phone line; my Internet connection, which uses the phone line, can transfer 24Mb/s (ADSL)! This is enough to watch live TV transmission in full screen with stereo sound in HiFi! ;)
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