Cascode question

woody · 20th May 2008, 11:21 PM

Looking at this basic circuite I have a question. Assuming the
voltage source had say 200mv ripple would it be better to use
another fet as a cap multiplier voltage regulator or use a little higher supply voltage and use a fet cascode to keep the voltage
across the current source constant. I was thinking about a 18v
source conected to the source of the ccs and then the 18v+ to
the gate of the cascode fet not shown in the circuite.

Nelson Pass · 20th May 2008, 11:50 PM

Depending on where you want to go, I don't think you're going to
get there with this schematic.

The voltages probably aren't what you want and there's no control
to stabilize the DC operating point of the circuit.

Can you tell us a little about what you are going to do with this
when you get it working?

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20th May 2008, 11:50 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	Depending on where you want to go, I don't think you're going to get there with this schematic. The voltages probably aren't what you want and there's no control to stabilize the DC operating point of the circuit. Can you tell us a little about what you are going to do with this when you get it working?

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