single phase power savings

[pese]

@jjbean

yes if input is DC , and output also
you find an "true" value

(if you dont have "TRUE RMS Power Meter)

otherway ,:

DC in ,  AC out , but let it work only to resitance OUTUT LOAD.
ike Heater (air or water) or in Light bulbs , that you can "compaire"
the Output-Power  ,with another  50/60Hz or DC  source.
(If Output is Sine wave  . you can also see vor voltage.

R =  V/A   Volt divide  by A   are R (ohms)

Volt  time Amps  is  VA  = Watts..

Noz true if Square-Wave , Pulsed or other  Curents  than SINEWAVE-AC
or  DC.

AC Meterings (likeyou have decribed are UNTRUE
if the PHASE of source and lode are not in same time
and direction .  Your circuit have L and C.
Inductance and Capacitors  in Source as in Load .
That make the problem to find TRUE power values. !

G,Pese

[wizkycho2]

@pese
If AC current is not in phase with voltage than power meassured with Watt-meter is allways LOWER.
but brughtness of the lamp or mechanical power of the motor in resonance(rotoverter) with AC supply is much higher than Wattmeter would measure !!!

It is because Source Amperage Phase is in resonance with Loads Amperage Phase, and/or Source Voltage phase is in resonance with Loads Voltage Phase. Load is virtually high impendance so less current must flow through it

wizkycho2

[pese]

Yes it is so.

Lamps give the view to correct output power. !

You can compair this brightness also with an second lamp that you driive
from an regulates dc source aor frm AC vario-Transformer (i think VARIAC in
US is usually word for this device).

Compare this 2 lights  , and you know the power exactly.

( by eyes , by foto-brightnessmeter , lux (candle) meter
or make very simpel an "shadow" from an "match" with the
two lamps to an white paper . Lots of solutions are possibel
to find...
P.

[jjbeamish]

Or you can take a 12v battery and an inline amp meter to an inverter plug in your drill press and see for yourself.

[Nali2001]

Yes but can single phase motors really be RV'ed? As far as I see it you can not. So trying an RV-alike cap approach on a single phase is not really possible except for maybe some PF correction. For true RVing you indeed need a regular 3phase motor.

Steven