sinewave power

[crazy frog]

if i have a squarewave gen set and
i need sinewave for 240v, how do i
convert from square to sine?

i have a active line filter it has a
isolated transformer with 2 more
windings with some large caps.
its sinewave

will it putt out sinewave from a square wave
gen set or do i need a sinewave genset.

thanks
ppl

 

[[email protected]]

Excuse my ignorance but doesn't the generator in the "gen set" put out
a sinewave anyway?

 

[crazy frog]

its an old genset 25 years old brushes slipring type
dunlite, today ive seen some for sale new
with earth magnet's makeing them sinewave.
with no regalators or brushes in them, makes them
good for electronics and computers.
these gens are sold at rusco tools and paints
my old gen uses a triac type regualator.
it destroid a audomation switch, or it
maybe the spikes from the brushes that
di it.

 

[Mark Harriss]

its an old genset 25 years old brushes slipring type
dunlite, today ive seen some for sale new
with earth magnet's makeing them sinewave.
with no regalators or brushes in them, makes them
good for electronics and computers.
these gens are sold at rusco tools and paints
my old gen uses a triac type regualator.
it destroid a audomation switch, or it
maybe the spikes from the brushes that
di it.

That old Dunlite is probably putting out an
"Imperial" sine wave which is not compatible
with your "Metric" sine wave equipment.

 

[crazy frog]

is there a way to convert square to sine
with a hand full of components for 240ac?
if so where can i find a circuit.

thanks
ppl

 

[Phil Allison]

"crazy frog" <

is there a way to convert square to sine
with a hand full of components for 240ac?

** NO !




....... Phil

 

[[email protected]]

Not a handful of components, but a couple A5 sized PCBs.

You could full wave rectify your output and feed the resulting high
voltage DC into the sinewave converter section of Silicon Chip's old
sinewave inverter in Dec '92 issue.

Suspect it'll be cheaper to buy a new generator though.

 

[crazy frog]

yeh i think so to.

Not a handful of components, but a couple A5 sized PCBs.

You could full wave rectify your output and feed the resulting high
voltage DC into the sinewave converter section of Silicon Chip's old
sinewave inverter in Dec '92 issue.

Suspect it'll be cheaper to buy a new generator though.

 

[Mark Harriss]

yeh i think so to.

Hi Crazy, I'm curious about this gen set you have
is it outputting 240 volts AC with a square wave
output?. I've never heard of such a set before and
wonder if it might do that when the output is lightly
loaded and then go to a sine under some kind of load
say a few hundred VA or so.

How do you know it's square wave in the first place?.

 

[Who are WE?]

Hi Crazy, I'm curious about this gen set you have
is it outputting 240 volts AC with a square wave
output?. I've never heard of such a set before and
wonder if it might do that when the output is lightly
loaded and then go to a sine under some kind of load
say a few hundred VA or so.

How do you know it's square wave in the first place?.

Maybe he has inverter?

 

[crazy frog]

its triac regulated and if not squarewave
it maybe modified sinewave but my electronics
dont like it, im upgading to a 5kva earth magnet
type, no brushes or electronic regulator as my 2kva is not up to it.
brushes make spikes. it maybe the type of regulator it has
is the prob.

..au...

 

[Mike]

That old Dunlite is probably putting out an
"Imperial" sine wave which is not compatible
with your "Metric" sine wave equipment.

<chuckle>

Nice one !

--
Regards
Mike
* GMC/VL Commodore, Calais VL Turbo FuseRail that wont warp or melt !
* High grade milspec ignition driver electronics now in development
* Twin Tyres to suit most sedans, trikes and motorcycle sidecars
http://niche.iinet.net.au

 

[Mark Harriss]

its triac regulated and if not squarewave
it maybe modified sinewave but my electronics
dont like it, im upgading to a 5kva earth magnet
type, no brushes or electronic regulator as my 2kva is not up to it.
brushes make spikes. it maybe the type of regulator it has
is the prob.

Usually the regulation changes the field current and the output
is a clean sinewave: slip rings shouldn't cause massive amounts
of noise in an alternator: what's it look like under load with a
CRO?.