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Problem HH 2.3
The simplest regulated supply of voltage is a zener such as in the figure
below.
Some current must flow through the zener so you choose:
V
in
"
V
out
R
>
I
out
(max)
Because V
in
is not regulated, you use the lowest value of V
in
that might occur for this
formula. Also the zener must be able to dissipate power:
P
zener
=
(
V
in
"
V
out
R
"
I
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Unformatted text preview: out ) # V zener For worstcase design, you would use V in (max), R min and I out (min). Design a +10 volt regulated supply for load currents from 0 to 100 mA; the input voltage is +20 to +25 volts. Allow at least 10mA zener current under all (worstcase) conditions. What power rating must the zener have?...
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This note was uploaded on 07/25/2008 for the course PHY 440 taught by Professor Abolins during the Spring '06 term at Michigan State University.
 Spring '06
 ABOLINS
 Electronics, Current

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