Inverter

[Dafydd]

I need to buy a sine wave inverter to power 25w at 240vAC.
If I buy a 300w sine wave inverter, does it take more power to run than a
150w inverter.

I also have a 240v 12vDC 12 amp battery charger I would like to run from the
inverter while the engine is running.

How much power in watts at 240vAC will that battery charger take.

Many thanks for the assistance.
--

 

[Phil Allison]

"Dafydd" <noemail@anywhere.com

I need to buy a sine wave inverter to power 25w at 240vAC.

** Is " 25w " a typo ?

If I buy a 300w sine wave inverter, does it take more power to run than a
150w inverter.

** Yep.

I also have a 240v 12vDC 12 amp battery charger I would like to run from
the
inverter while the engine is running.

How much power in watts at 240vAC will that battery charger take.

** Depends on the design of the charger - whether it has an iron
transformer or is a switcher of some kind.

Have a good look at it - there may be a VA rating printed somewhere. The
switch on surge has to be considered as well - inverters can drive some
loads and not others - have you not learned from the "fridge" thread ?

Why not ask the folk who sell the sine wave inverters you are considering
?? It is their job to inform you of suitable and unsuitable loads.




............ Phil

 

[Dafydd]

25w is correct. That what is says on the plate on satellite receiver.

The battery charger is a crude Arlec iron transformer type about 20 years
old.
No plate on the old thing.

I do know that modified sine inverters will not run transformer type battery
chargers.

--

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:409b4fbc$0$14771$afc38c87@news.optusnet.com.au...

"Dafydd" <noemail@anywhere.com


I need to buy a sine wave inverter to power 25w at 240vAC.


** Is " 25w " a typo ?


If I buy a 300w sine wave inverter, does it take more power to run than a
150w inverter.


** Yep.



I also have a 240v 12vDC 12 amp battery charger I would like to run from
the
inverter while the engine is running.

How much power in watts at 240vAC will that battery charger take.



** Depends on the design of the charger - whether it has an iron
transformer or is a switcher of some kind.

Have a good look at it - there may be a VA rating printed somewhere. The
switch on surge has to be considered as well - inverters can drive some
loads and not others - have you not learned from the "fridge" thread ?

Why not ask the folk who sell the sine wave inverters you are considering
?? It is their job to inform you of suitable and unsuitable loads.

 

[Phil Allison]

"Dafydd" <noemail@anywhere.com>

25w is correct. That what is says on the plate on satellite receiver.

** How utterly stupid of you not to say that before.

The battery charger is a crude Arlec iron transformer type about 20 years
old.
No plate on the old thing.

** It will draw about 250 VA at full oad - with a huge magnetic switch
on surge.

I do know that modified sine inverters will not run transformer type
battery
chargers.

** YOU do not know any such damn stupid thing.






............ Phil