Ok i know this sounds like a very easy question, but jus please take a read.
A Regulated Stablised Power Supply
a) Keeps the Voltage stable over a wide range of currents
b) Keeps the Current stable over a wide range of volatges
c) Keeps the power constant by changing the current and voltage to suit.
I was doing a multiple choice past paper and I this question had me thinking and reading a lot.
I'm no electro-wiz, but that's what I think:
Regulated Stabilized power supply should supply a constant voltage, no matter what current is drawn, so I would choose a...
But still I think we need Nigel's supervision on this one...
The terms regulated stabilized just "unstabilized" me...
I know that regulators just "clamp" voltages so that there's no overshoot, or goin' outside a specific range. And stabilizers, from the "house appliance", it should provide constant output... I really think that it's answer a)
Constant current source - still needs a regulator - just controlling a different degree of freedom. Industry uses these by the million but they are 'normally' referred to as 'current sources' rather than supplies.
c) Keeps the power constant by changing the current and voltage to suit.