Resistors for Custom Regulators

Discussion in 'General Discussion' started by Ikeprodigy, Mar 1, 2017.

  1. Ikeprodigy .

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    Where's the best place to get the listed resistors for custom regulators? (87.2k, 33.8k, 1.89k, 353)

    I'm having a hard time finding some for an affordable price.

    If there aren't any resistors with the exact value, what are the best combinations to put in series?

    Links would be appreciated!
     
  2. Gman RTFDS Staff Member . . . . .

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  3. Ikeprodigy .

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    Thanks! This helps a whole lot! What about for 5v?
     
  4. Gman RTFDS Staff Member . . . . .

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    I will teach you

    1. Go to digikey.com

    2. Type in "Resistor"

    3. Check off search criteria example: 1/4watt, through hole, and resistance

    4. Choose correct resistor that has stock available and a minimum quantity of 1. I recommend getting 10 resistors (or more) at a time, the price per quantity is lower generally.

    If the actual resistance you are looking for is not available, choose a resistor that is closest and reference with pth08080 datasheet that the output voltage will be in range. Hint: 353 ohms is not available but 330 is pretty common http://www.digikey.com/product-deta...ronics-inc/CF14JT330R/CF14JT330RCT-ND/1830338
     
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  5. ShockSlayer Ivan - the tyranny of evil men . .

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  6. Ikeprodigy .

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    Thank you so much Gman! This is very valuable information!
     
  7. Ikeprodigy .

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    Great response! Thanks a ton!
     
  8. Fiskers1208 BANNED . .

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    thanks for making this thread. I really needed it. @ShockSlayer @
    Gman is this for 7.4v batteries or for 14.8v
     
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  9. Gman RTFDS Staff Member . . . . .

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  10. Fiskers1208 BANNED . .

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    okay but will there be a difference between the output
     
  11. GC64 .

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    No, as long as it is between 4.5v and 18v it will have the same output based on your resistor. Though you should make sure the voltage listed on your capacitor is at least double your input voltage.
     
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  13. Gman RTFDS Staff Member . . . . .

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  14. Ikeprodigy .

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  16. Gman RTFDS Staff Member . . . . .

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  17. Fiskers1208 BANNED . .

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    gc64 said "No, as long as it is between 4.5v and 18v it will have the same output based on your resistor. Though you should make sure the voltage listed on your capacitor is at least double your input voltage"
     
  18. Ikeprodigy .

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    2*14.8= 29.6 and 29.6<50
     
  19. GC64 .

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    that is true, I did say that.
     
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  20. Fiskers1208 BANNED . .

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    thank you very much
     
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