Search found 144 matches
- Fri Jul 25, 2008 6:19 pm
- Forum: Alternative Power
- Topic: Beware modified sine inverters!
- Replies: 3
- Views: 8626
- Thu Jul 24, 2008 10:36 am
- Forum: Alternative Power
- Topic: Beware modified sine inverters!
- Replies: 3
- Views: 8626
Beware modified sine inverters!
I'm looking to take back my 600W inverter to the shop I bought it from a couple of weeks ago. It works ok (in so much as modified sine ones can) but while the lights and the laptop work on on it, the LCD TV doesn't care much for it. The TV works but makes a loud mechanical 100Hz buzzing from it's po...
- Thu Jul 24, 2008 9:48 am
- Forum: Alternative Power
- Topic: Battery Score!!!
- Replies: 9
- Views: 12246
- Thu Jul 10, 2008 5:18 am
- Forum: Alternative Power
- Topic: Solar cookin at the Slabs
- Replies: 6
- Views: 6504
Not to mention the user burn hazard... My wife often burns her fingers and melts assorted plastic items on our halogen ceramic hobs. With a perfectly flat black surface that gets just occasionally red hot (when the halogen element is on) it's really easy to forget the surface is hot (especially as s...
- Wed Jul 09, 2008 12:46 am
- Forum: Alternative Power
- Topic: Just getting started
- Replies: 82
- Views: 134175
- Tue Jul 08, 2008 10:20 am
- Forum: Alternative Power
- Topic: How often do you replace your solar batteries?
- Replies: 3
- Views: 6189
Hahahaha... I'm so minor league :D I've got an old 70Ah leisure battery that I've had kicking around for about 7 years and a bunch of car batteries in various states of ruin. At the moment I've got the leisure battery and a new 70Ah car battery in parallel for this solar experiment. The car battery ...
- Tue Jul 01, 2008 8:40 pm
- Forum: Alternative Power
- Topic: How often do you replace your solar batteries?
- Replies: 3
- Views: 6189
How often do you replace your solar batteries?
I've been looking at different types of deep cycle lead acid batteries for solar use and it seems the best ones are carbon fibre ones that are rated to around 1000 80% discharge cycles. On a daily use, small scale solar system that could mean replacing these quite expensive batteries every 3 years.....
- Tue Jul 01, 2008 1:11 pm
- Forum: Alternative Power
- Topic: Just getting started
- Replies: 82
- Views: 134175
Thanks Sharkey. Although an electronic engineer (in the past) I'd never played with PV cells beyond some little toy kits. Incidentally, for anyone else who wants a good primer on PV technology and theory you can look through this on-line study guide. http://www.udel.edu/igert/pvcdrom/index.html It's...
- Mon Jun 30, 2008 1:39 pm
- Forum: Alternative Power
- Topic: Just getting started
- Replies: 82
- Views: 134175
Just getting started
I'm just playin' around with some cheap PV panels... I've got 6 panels so far (2x 12w 17.5v and 4x 15w 17.5). The 12w ones have blocking diodes built in and the 15w ones don't. If wiring them all in parallel, do I need to add blocking diodes to the ones that don't have them? I'm running them through...