sx48 proto board power in

Comments

• Jon Williams Posts: 6,491

  2005-09-01 13:07 edited 2005-09-01 13:07

  The regulator can handle 12 volts without any problem -- just remember that Vin will be 12 volts and you don't want to use that to drive servos.
  
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  Jon Williams
  Applications Engineer, Parallax
• KenM Posts: 657

  2005-09-02 02:46 edited 2005-09-02 02:46

  For boosting 12 v to 24v try google and search for voltage doubler
  
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  Ken
• LoopyByteloose Posts: 12,537

  2005-09-03 13:28 edited 2005-09-03 13:28

  There is a nice little voltage doubler schematic that uses a 555 timer, but I suspect that it doesn't get the power you want. You might have to find a way to amplify it's timer output pulse before driving the pulse through the diodes and capacitor.
  
  In turn, you might find yourself having to triple the voltage to deal with voltage drops in the amplifier stage.
  
  Is this too conceptual? Do you want a small chip or a schematic?
  
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  G. Herzog in Taiwan
• Sawmiller Posts: 276

  2005-09-04 01:42 edited 2005-09-04 01:42

  the sensor draws approx 130 ma @24 vdc when its powered up, should be able to use a small onboard doubler, have seen some with google....
  
  this is a linear magnflux transducer, senses position from interaction with a nearby magnets field, and sends out the time dependant pulse for it, ---|___________|

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  uses the falling edge , im researching using the sx48's 16 bit timer to give me some resolution..... the only problem so far is the examples are all in assembly, and i've been going at SX/B.... so its like a monkey looking at a piece of paper , knowing theres a banna there , but just not able to read.... takes time
  
  
  
  dan