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Date Posted: 7/10/2008 6:32:30 AM  Status: Live
i need to know how to do this problem
Course Textbook Chapter Problem
Analog Circuits Microelectronic Circuits (5th) by Sedra, Smith 3 63
Question Details:
i need to find the output voltage with the 150 load connected.
i need to find Vo with no load connected.
with the load connected to what value can the 5-V supply be lowered while maintaining the loaded output voltage within 0.1 -V
thanks
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Date Posted: 7/11/2008 3:14:44 AM  Status: Live
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Response:
Given,
Current through the diodes,
Voltage drop across each diode,

 
The diodes and the load are in parallel hence they will have same voltage across them.
(a)
When the load is connected a voltage  applied across the diodes
and the diodes will be operated. Therefore the voltage drop across the diodes wiil be the output voltage
(b)
When the load is not connected a voltage of is applied across the diodes and the diodes will be operated. Therefore the voltage drop across the diodes wiil be the output voltage
(c)
Given that the output voltage
When the output voltage is 0.1V the diodes will be in off state hence the supply voltage will be
Therefore the supply voltage should be lowered to 0.22 V.
 
 
Hope this helps you...



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