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all about regulated power supply
a linear power supply the noise or ripple can be reduced to mv. However it is bulky heavy and inefficient A switching power supply it is easier to filter its output but the hi frequency noise and spikes are not that ease to get rid off. The weight and size can be greatly reduced and the efficiency greatly improved
Advantage of regulated power supply.
Advantage of regulated power supply.
1.Efficiency is high compared to linear power suplies 2.ripple voltage is very low 20mv. 3.constant regulating voltage is the one of the advantage of smps.
Maintain constant stable supply and reference voltages.
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If land was not regulated, then there could be more pollution. Polluted areas would cause the water supply to be unusable and undrinkable if runoff from chemical sources enter into the supply.
switchinglinearferroresonant-transformer
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.
in regulated the voltage will be a constant one and can't be variant but is in case of unregulated
Heaters have an efficiency around 99%.