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GeneralRe: Sine of the Times Pin
Richard Deeming4-Jun-20 7:59
mveRichard Deeming4-Jun-20 7:59 
GeneralRe: Sine of the Times Pin
Marc Clifton4-Jun-20 8:57
mvaMarc Clifton4-Jun-20 8:57 
GeneralRe: Sine of the Times Pin
Richard Andrew x644-Jun-20 10:17
professionalRichard Andrew x644-Jun-20 10:17 
GeneralRe: Sine of the Times Pin
OriginalGriff4-Jun-20 9:03
mveOriginalGriff4-Jun-20 9:03 
GeneralRe: Sine of the Times Pin
Richard Andrew x644-Jun-20 10:18
professionalRichard Andrew x644-Jun-20 10:18 
GeneralRe: Sine of the Times Pin
OriginalGriff4-Jun-20 11:09
mveOriginalGriff4-Jun-20 11:09 
GeneralRe: Sine of the Times Pin
obermd5-Jun-20 3:24
Memberobermd5-Jun-20 3:24 
GeneralRe: Sine of the Times Pin
Jörgen Andersson4-Jun-20 9:53
professionalJörgen Andersson4-Jun-20 9:53 
A cheap inverter produce a square wave instead of a sine wave.
There are two problems with that.

A. A square wave produces harmonics really high up in frequency which, if badly filtered, can produce a high amount of interference with sensitive electronics. This can have very strange consequences.

2. In most switched power supplies, the input is first rectified and filtered through a capacitor to create a direct current
To produce the same power through a resistive load, the peak voltage of a sine wave is sqrt(2) higher than the peak voltage of a square wave. this means the voltage of the rectified direct current is 0.707 lower than the voltage from a square wave.
So for a switched power supply to create the same output voltage from a square wave as from a sine wave it uses 1.414 times higher current.
This is one reason brownouts break a lot of electric equipment.

So, I would take a good look at the power supply for how LOW voltage it accepts, if that is less than 0.707 of the nominal voltage of the inverter you don't need to worry to much I think, since switched power supplies are not very sensitive to higher harmonics.

Then there are some intermediate priced inverters producing something called modified sine wave, which is looking similar to a truncated triangle wave.
Wrong is evil and must be defeated. - Jeff Ello

GeneralRe: Sine of the Times Pin
Richard Andrew x644-Jun-20 10:23
professionalRichard Andrew x644-Jun-20 10:23 
GeneralRe: Sine of the Times Pin
Jörgen Andersson4-Jun-20 10:40
professionalJörgen Andersson4-Jun-20 10:40 
GeneralRe: Sine of the Times Pin
Richard Andrew x644-Jun-20 12:39
professionalRichard Andrew x644-Jun-20 12:39 
GeneralSlides, photography from the 50's??? Pin
glennPattonContracting24-Jun-20 5:39
professionalglennPattonContracting24-Jun-20 5:39 
GeneralRe: Slides, photography from the 50's??? Pin
PIEBALDconsult4-Jun-20 5:46
professionalPIEBALDconsult4-Jun-20 5:46 
GeneralRe: Slides, photography from the 50's??? Pin
Storm-blade4-Jun-20 5:53
professionalStorm-blade4-Jun-20 5:53 
GeneralRe: Slides, photography from the 50's??? Pin
W Balboos, GHB4-Jun-20 6:06
mveW Balboos, GHB4-Jun-20 6:06 
GeneralRe: Slides, photography from the 50's??? Pin
glennPattonContracting24-Jun-20 6:54
professionalglennPattonContracting24-Jun-20 6:54 
GeneralRe: Slides, photography from the 50's??? Pin
Mike Hankey4-Jun-20 6:17
professionalMike Hankey4-Jun-20 6:17 
GeneralRe: Slides, photography from the 50's??? Pin
OriginalGriff4-Jun-20 6:32
mveOriginalGriff4-Jun-20 6:32 
GeneralRe: Slides, photography from the 50's??? Pin
glennPattonContracting24-Jun-20 6:56
professionalglennPattonContracting24-Jun-20 6:56 
GeneralRe: Slides, photography from the 50's??? Pin
Member 79891224-Jun-20 7:39
MemberMember 79891224-Jun-20 7:39 
GeneralRe: Slides, photography from the 50's??? Pin
Gary R. Wheeler4-Jun-20 13:11
MemberGary R. Wheeler4-Jun-20 13:11 
GeneralRe: Slides, photography from the 50's??? Pin
Member 79891224-Jun-20 7:37
MemberMember 79891224-Jun-20 7:37 
GeneralRe: Slides, photography from the 50's??? Pin
Peltier Cooler5-Jun-20 4:02
professionalPeltier Cooler5-Jun-20 4:02 
GeneralRe: Slides, photography from the 50's??? Pin
Rick York4-Jun-20 9:12
mveRick York4-Jun-20 9:12 
GeneralRe: Slides, photography from the 50's??? Pin
Member 79891224-Jun-20 6:33
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