|
|
Author |
|
Message | |
|
Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
|
|
|
|
|
dpack
Joined: 02 Jul 2005 Posts: 46247 Location: yes
|
|
|
|
|
Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
|
|
|
|
|
dpack
Joined: 02 Jul 2005 Posts: 46247 Location: yes
|
|
|
|
|
Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
|
|
|
|
|
Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
|
|
|
|
|
dpack
Joined: 02 Jul 2005 Posts: 46247 Location: yes
|
|
|
|
|
Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
|
|
|
|
|
dpack
Joined: 02 Jul 2005 Posts: 46247 Location: yes
|
|
|
|
|
Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
|
|
|
|
|
dpack
Joined: 02 Jul 2005 Posts: 46247 Location: yes
|
Posted: Tue Jul 16, 19 8:32 pm Post subject: |
|
i might dip into my pocket a bit deeper, apart from output quality the energy losses between battery and appliance are less with a decent mid range one which can matter if you have limited charging capacity.
output quality is quite important for some kit, enough voltage is vital for charging portable batteries for tools, bikes etc, nice and clean matters for others and nowt wants surges , clipping etc.
i have gone usb voltage for portable stuff and am fairly happy not to be trying to get portable from 12v kit any more.
low low voltage is fine for light, smart phone, a aa and aaa for small appliances like gps ,night vis , radio, camera etc etc ,with a bit of time it can gather enough power to run a moderate tablet or lappy from a full power bank and keep ahead on the batteries for the little stuff
all less than 4kg including portapanel, battery banks, metering gear ( to check things are going well ) , odds n ends and lots of little batteries as well as all the bits n pieces of handy kit, ( pooter not included )
if you can reduce the power load per function you need then portable pv can get really tidy.
it aint how much you have it is how little you need to do what you have to do, that applies even with a van roof panel but very low voltage is the way to go for the sort of end use mentioned above
step down is easy compared to step up if dc is involved and should be used whenever poss
dc to ac is wasteful, dc to ac to dc is desperate
what V do you get out of the panel, what do your batteries have on a full charge as a voltage if everything is having a good day?
as the inverter is probably dead is a rethink of how to do what you need sensible?
if you want an aluminium smelter or even to charge a decent portable power tool battery tis a different set of criteria to lights and light power use appliances
oh, if you fancy trying to mend it it might invalidate any house or vehicle insurance should it be out of service and on fire at some point in the future |
|
|
|
|
Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
|
Posted: Wed Jul 17, 19 12:17 am Post subject: |
|
dpack wrote: |
i might dip into my pocket a bit deeper, apart from output quality the energy losses between battery and appliance are less with a decent mid range one which can matter if you have limited charging capacity. |
I am minded to learn how the things work and intend to build one: they don't appear to be rocket surgery: chop the battery voltage into high frequency, throw it through a transformer, rectify and then cycle it at 50Hz...
Although at this point it is clear that I am missing something quite significant.
Quote: |
output quality is quite important for some kit, enough voltage is vital for charging portable batteries for tools, bikes etc, nice and clean matters for others and nowt wants surges , clipping etc.
|
TBH I'm a little baffled about what does and does not need a good sine wave.
Motors, I am told need a good wave, and I think I can understand that, or at least sort of.
Or maybe it's the other way about and the motor is what fried the inverter? It did work fine for a bit and then not so...
Quote: |
i have gone usb voltage for portable stuff and am fairly happy not to be trying to get portable from 12v kit any more.
|
Battery technology has come on a long way in a short time. Driven, I believe to a fair extent by the (trying to be) ex-smokers,
Quote: |
what V do you get out of the panel, what do your batteries have on a full charge as a voltage if everything is having a good day?
|
The panel claims 18V open circuit and the battery claims 110Ah. Am still rebuilding the van, so I've not had any scenario to properly test anything yet.
Quote: |
as the inverter is probably dead is a rethink of how to do what you need sensible?
|
Could just go back to the little inverter that I've had for years... |
|
|
|
|
dpack
Joined: 02 Jul 2005 Posts: 46247 Location: yes
|
|
|
|
|
RichardW
Joined: 24 Aug 2006 Posts: 8443 Location: Llyn Peninsular North Wales
|
|
|
|
|
|