Design a circuit

Discussion in 'Homework Help' started by murlan, Jul 21, 2010.

  1. murlan

    Thread Starter New Member

    Mar 28, 2010
    I need a help to design a circuits and to do this.

    1. An 18V, 50W zener diode is to be used to maintain a constant DC voltage across a load which varies from 10-100ohms. The input voltages is 90V.

    2. An unregulated supply varies between 20 and 25V. A 10V zener diode is to regulate this voltage for use in a tape recorder. The recorder draws 30mA when recording and 50mA when playing back. The zener can dissipate a maximum power of 80mW.
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
    murlan likes this.