zenor diodes - Electronic Circuits Projects Diagrams Free

crossm · 14th August 2009, 07:31 PM

the question i have is a power supply voltage is 15 volts, and the load current I sub l is at its minumum value, the current through the zener will be __________.

Hero999 · 14th August 2009, 08:16 PM

You can't answer that question because it makes no sense and doesn't contain enough information.

microtexan · 14th August 2009, 08:24 PM

Quote:

Originally Posted by crossm

the question i have is a power supply voltage is 15 volts, and the load current I sub l is at its minumum value, the current through the zener will be in mA_.

Unless the current is higher and the it will be Amps!

RCinFLA · 14th August 2009, 10:10 PM

Think of it this way.

For a shunt regulator, the current either goes out to the load or down the zener diode.

To maintain regulation the zener has to at least sink as much current under no load condition as the minimum to maximum load condition will require.

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14th August 2009, 07:31 PM	#1
crossm	zenor diodes the question i have is a power supply voltage is 15 volts, and the load current I sub l is at its minumum value, the current through the zener will be __________.

14th August 2009, 08:16 PM	#2
Hero999	You can't answer that question because it makes no sense and doesn't contain enough information. __________________ I do not answer private messages asking for help because no one else can: benefit from advice I may give or correct me if I'm wrong. Please ask on the open forum if you have a question and I'll be happy to help, if I know the answer.

14th August 2009, 10:10 PM	#4
RCinFLA	Think of it this way. For a shunt regulator, the current either goes out to the load or down the zener diode. To maintain regulation the zener has to at least sink as much current under no load condition as the minimum to maximum load condition will require.