Voltage came to zero, in circut after resister

Discussion in 'General Electronics Chat' started by emraan, Nov 20, 2004.

  1. emraan

    Thread Starter New Member

    Nov 20, 2004
    4
    0
    hi,

    I m using resister in a circut to reduce the voltage from dc 50 volt to dc 12 volts. when i use resister it decrese the volts but when i use 12 volt bulb on it the voltage came to zero volts...

    plz help me in the problem... :(
     
  2. haditya

    Senior Member

    Jan 19, 2004
    220
    0
    what u need is a voltage divider of 2 reistances such that 12 volts is dropeed across one resistor and 38 V acrosss another
    a voltage divider has the fol formula
    V=Vi*R1(R1+R2)
     
  3. emraan

    Thread Starter New Member

    Nov 20, 2004
    4
    0


    Thank a looooot... :rolleyes:
     
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