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Every electronic circuit is designed to operate off of some supply voltage, which is usually assumed to be constant. A voltage regulator provides this constant DC output voltage and contains circuitry that continuously holds the output voltage at the design value regardless of changes in load current or input voltage (this assumes that the load current and input voltage are within the specified operating range for the part).
GDF said:We can see in most systems, we have regulator, but why
we need this? What it can help us?
Thanks,
Borber said:Unstable power supply voltage causes unstable signal parameters or erratic signal proccessing, unstable operation. Regulator low output resistance minimize parasitic feedback coupling through power supply line.
Most digital IC's require supply voltage with tight tollerances.
GDF said:I have a question, any regulator can convert 3V to 1.5V efficiently without
or with only few external components?For example, one capacitor only.
GDF said:Excuse me, maybe I mislead everybody because I'm not familiarized with
power ICs.
The regulator like suria3's description is easy to be realized. But the problem
is this kind of regulator suffers low efficiency. Any kind of regulator can convert
high voltage to low voltage with high efficiency and few external components?
GDF said:By the way, I did a survey of power ICs. I'm confused by several products like
Regulator, DC-DC converter. What's difference?And, what's the same?
Thanks for your help.