A: DC can be unregulated and operate circuitry however that becomes impractical when the source varies continuously or wildly A regulator simply will provide a lesser power requirement but at a reliable level not matter of the source swing.
all about regulated power supply
conclusion of dc power supply 9V
In an ideal DC power supply, there is no ripple.
DC 12V power supply can convert 110/220V AC power source to 12V DC.
Variable dc supply is applicable in loads that are variable.
all about regulated power supply
I'm no expert but I wouldn't try that: I think battery chargers adjust the current flow to battery as it charges. The regulated power supply mentioned has a steady flow of current out (regulated) doesn't it? I would expect the battery to be damaged by charging with a power supply.
LM317 can be used for regulated dc power supply upto 37V. For more voltage range, a zener can be connected at the reference pin.
Advantage of regulated power supply.
Advantage of regulated power supply.
DC Power is Direct Current Power Supply.
dc power supply
In an ideal DC power supply, there is no ripple.
conclusion of dc power supply 9V
The 7805 is a three terminal 5 volt regulated power supply. You provide a ground, a DC supply somewhat higher than 7 volts, and it provides a regulated 5 volts output.
DC 12V power supply can convert 110/220V AC power source to 12V DC.
The DC supply may supply power to trip breakers, or to power the protective relays.