Electronics help! zener diode!

Discussion in 'Homework Help' started by badaboom21, Mar 15, 2011.

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  1. badaboom21

    Thread Starter New Member

    Mar 15, 2011
    I need a rectifier with a zener diode with Vdc=12V, Ir2=100mA and a ripple voltage, Vr(of R2)<=.3v. The primary voltage is 120V with 60hz frequency. I need to know the values that could be used for the capacitor, resistances, voltages and currents.
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    This falls into the class of projects that are too inherently dangerous to discuss. Always use a transformer to provide galvanic isolation and a lower voltage. In this case, an inexpensive wall transformer would work very well.
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