Question

• Design a FULL WAVE BRIDGE RECTIFIER circuit that will:
  • Take 120volts ac, 60 hz, sinusoidal waveform from the wall power and convert it to a “regulated” dc value giving 15 volts +, - 1.0 volts across a 1200-ohm output load resistor with no more than 2% ripple voltage, all at a total component parts cost of less than $175.00 (US$).

Your design process/ analysis is to be conducted by hand.

• Consider for this design task:
  • Assume an ideal transformer and ideal diodes. As part of your design process you must consider:
  1. A filter capacitor sized per the textbook equation/Lecture material that will meet the ripple voltage requirement above.
  2. A turns ratio for your power transformer.
  3. An ideal Zener diode within a shunt regular circuit arrangement.
  4. Your design should be mindful of health and safety concernsfor users and the general public with protections for its use. Describe how your design will do that. Reference link below.
  5. ALSO- I want an ON/OFF switch AND proper fusing of the power supply on input side (house power) and load side (i.e. current to the load). SO, don’t forget fusing requirements, which are:
     1. Design in electrical overload protection for maximum of 140 vrms / 60hz over-voltage from the wall such as fusing for my precious AMPLIFIER that I am providing. I also want fuse protection for 14 milliamps MAXIMUM going to my load resistor (AMPLIFIER INPUT RESISTANCE OF 1200 OHMS). So, add in costs for the fuses. Don’t forget the fuse holders either.

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