Shop OBEX P1 Docs P2 Docs Learn Events
exp 28 Voltmeter, need more voltage, different chip??? thanks for your help!! — Parallax Forums

exp 28 Voltmeter, need more voltage, different chip??? thanks for your help!!

indigo2indigo2 Posts: 25
edited 2008-12-17 16:44 in General Discussion
i need to measure the voltage of my capasitor, witch has a max voltage of 100v(and will get there)

the ADC0831 has a max input of 5 VDC, i need 1 for 100 VDC.

do i need another chip instead?

Thank you for your time!

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2008-12-17 15:07
    You basically need a voltage divider on the input to your ADC to reduce the voltage from 100V to 5V. There's a good article explaining voltage dividers in the Wikipedia (do a websearch for "wiki voltage divider").
  • indigo2indigo2 Posts: 25
    edited 2008-12-17 15:18
    Thank you soo much Mike!!
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2008-12-17 16:44
    This thread is not BASIC Stamp related and is being moved to the Sandbox.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Engineering
Sign In or Register to comment.