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AC or DC

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Electronman

New Member
Hi,

The output of a half/full wave diode when the diode(s) is connected to an AC transformer and there is no capacitor is called AC or DC? It does not change to negative plot, so I am in doubt what to call it?

Besides I saw an animation of how to generate DC by just sutable using of comotators, the out was like the output of a full wave rectifier without a cap and they called it an DC generator?!
 

grim

New Member
unsmoothed DC ;)
 

grim

New Member
in that case it's female unsmoothed DC ;)

unless it goes negative, it is not ALTERNATING, and therefor is not AC

the proper name is half wave rectified unsmoothed DC.
 

crutschow

Well-Known Member
Most Helpful Member
Why half-wave?
If you use a single diode, you rectify only half the waves (either all the positive halves or all the negative halves) hence the term half-wave rectifier. If you use four diodes in bridge configuration ( or two diodes with a center-tap transformer), then it rectifies both halves of the waveform and it's called a full-wave rectifier.

In general the rectified, unfiltered signal from a diode rectifier can be considered pulsing DC or DC with high ripple (it's typical of many battery chargers which have no filter), although it still does have a significant AC component and harmonics (as a spectrum analyzer will measure).

This rectification technique is used in RF circuits (particularly microwave)as a frequency doubler (since a full-wave rectified signal has a fundamental frequency twice the input frequency).
 

HiTech

Well-Known Member
"unsmoothed"? How about non-filtered instead?
 

mbarazeen

Member
ripple DC or un-filtered would be better to call by. still you can call it as DC. it will make current in one direction only.
 
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