DIY with Quantum Boards

dannykay

dannykay

Well-Known Member
Discreetdigrowman said:
Yeah that meter would melt as the resistor pack and coil would not be able to handle the diverted load, that second meter should do the trick, all meters do draw a tiny load but you should be able to get your watts equal by matching voltage and current draw
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My mate is running these for a few weeks now, connected to the AC side of the driver.
Another member from this forum is also using these in his setup connected to the AC side, @T-Time , care to share?
 
T-Time

T-Time

Well-Known Member
dannykay said:
My mate is running these for a few weeks now, connected to the AC side of the driver.
Another member from this forum is also using these in his setup connected to the AC side, @T-Time , care to share?
Click to expand...
I've been running those connected to AC side for the past 3 months with no problem.
Dimming option is the best thing ever :D Love how you can easily fine tune your environment :hump:

@dannykay - Your plants look great !!! :weed:
20171113_165939.jpg
 
Discreetdigrowman

Discreetdigrowman

Well-Known Member
I cant see anywhere on any meanwell data sheets if they put out a pure sine wave or a modified one, but that will still only affect ac circuits being rectified to dc, so not sure if the other way around you have midified dc sine wave now you got me thinking, might have to break out the oscilliscope to see
 
Discreetdigrowman

Discreetdigrowman

Well-Known Member
Im sorry danny i thought you wanted to measure the dc side, those should work perfect for ac as the wall source is a pure sine wave, only houses running off solar or generators need to use sine wave inverters for there ac source
 
Discreetdigrowman

Discreetdigrowman

Well-Known Member
dannykay said:
thanks for the help clarifying this mate,
cheers.
Click to expand...
No problem, looking into metering our diy projects here is a little rule of thumb
an inverter is not a true sine wavetype (a so-called "modified sine wave" inverter), a simple voltmeter or multimeter will not read accurately. ... In order to measure a non-sine wave or a distorted waveform, a more expensive "true RMS" meter is required. So this would be true for the dc side of the driver output, as they are a modified sine wave type inverter
 
pop22

pop22

Well-Known Member
it puts out D.C., there is no sine wave

Discreetdigrowman said:
I cant see anywhere on any meanwell data sheets if they put out a pure sine wave or a modified one, but that will still only affect ac circuits being rectified to dc, so not sure if the other way around you have midified dc sine wave now you got me thinking, might have to break out the oscilliscope to see
Click to expand...
 
Discreetdigrowman

Discreetdigrowman

Well-Known Member
Also keep in mind anyone running those ac meters aformentioned if you live in areas where power loss during the winter is an issue running those off generator may not be a good idea, unless it is a generator with a built in line conditioner, same goes for solar battery backups, make sure you have a sine wave inverter or just bypass any meters while off grid power
 
pop22

pop22

Well-Known Member
my statement stands, D.C. does not producers a sine wave. Depending how its produced, it may have a fluctuating wave vs a flat line, but it is still not a sine wave, as D.C. does not reverse its direction of flow.

Direct current waveform
In DC (Direct current) circuits, the flow of electrical charge (or in other words, electrons) is unidirectional and unlike AC Current, it does not periodically reverses its direction.

The typical waveform of alternating current is a pure sine wave as shown in the figure below.




Direct Current (red curve). The horizontal axis measures time; the vertical, current or voltage. Source: Wikipedia.org
 
Discreetdigrowman

Discreetdigrowman

Well-Known Member
Thats the exact picture i tried to upload you can see the waveform right there it gives you all the standard waveforms, what ealse would you call it when viewing it on a scope other then a dc sinewave or dc waveform
 
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