pure sine wave generators - Page 2

raymo · #21 07-04-2020, 01:19 AM

Thanks for the info Gary.
raymo

DarwinAstro (Chris) · #22 13-04-2020, 07:31 AM

Hi Guys, Please excuse me if I'm asking the wrong question in the wrong place, forums are very new to me.
I'm looking at purchasing a 150W (450W Surge) 12VDC to 240VAC Inverter with USB to run my 1600mm cool, EAF and dew straps (2). The feed is coming from a 100amp hr lithium battery.

I have now idea when it comes to electricity consumptions / converting numbers etc. My question is, will this one do the job?

https://www.roadtechmarine.com.au/15...utm_medium=web

Thanks in advance for any advice. Cheers all. Clear Skys

Gary47 (Gary) · #23 13-04-2020, 08:04 AM

Chris why do you want to go to 240 Volt? The inverter will consume power and then you will need to convert back down to USB (5 Volt ). More efficient just to go from 12 Volt to 5 volt with a much cheaper reduction and it also eliminates 240 Volt connections, a much safer alternative on dewy nights.

DarwinAstro (Chris) · #24 13-04-2020, 10:56 AM

Love to do it that way....
USB power hub might be the go?
Certainly can't afford one of the Astro Power boxes.

EDIT: Found what I need. I just have to find one in Oz.
https://www.highpointscientific.com/...ter-plug-07331
Thanks for helping out Gary.
EDIT EDIT: Found what I need at Jaycay. $5.00 each.
Thanks again Gary

Outcast (Carlton) · #25 13-04-2020, 11:49 AM

Quote:

Originally Posted by DarwinAstro

Love to do it that way....
USB power hub might be the go?
Certainly can't afford one of the Astro Power boxes.

EDIT: Found what I need. I just have to find one in Oz.
https://www.highpointscientific.com/...ter-plug-07331
Thanks for helping out Gary.

Available in long lengths from BINTEL...

https://www.bintel.com.au/product/te...v=322b26af01d5

Or, Jaycar have them in 1.5m lengths for about $5

Or, you could make one by buying a 12V extension cable from Jaycar, cutting off the female end & attaching a cigarette lighter plug (or other connection of your choosing). Just make sure the polarity is correct for your mount, application or whatever it is you want to power... usually, things are centre pin positive but, please check & then test your lead before plugging it in.... most mounts & other expensive astro gizmo's have no reverse polarity protection...

DarwinAstro (Chris) · #26 13-04-2020, 11:35 PM

Thanks for everyone's help. All sorted from Jaycar.
Then the clouds rolled in...…….