Search found 9 matches
- Thu Feb 10, 2005 6:12 am
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
Re: LED lighthouse
need to power up 3 leds at 3.5v each. The leds need to be operating only in the dark. There are 2 sets of leds, they have to alternately switch on and off while operating (dimming in, holding and dimming out; one set on, the other off). There wont be AC source, so I have to use solar power to charge...
- Wed Feb 09, 2005 8:53 am
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
Re: LED lighthouse
Edd Whatley,<p>I do need 2 sets of leds to light alternatingly*.<p>* - if there's such a word.<p>
- Wed Feb 09, 2005 5:09 am
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
Re: LED lighthouse
precisely that's the point, i need help on the circuit design. pic solution is way out for me. ne5u, can u piece out a circuit diagram for me? cos i m quite confused about wat u r toking abt,
- Mon Feb 07, 2005 9:33 pm
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
Re: LED lighthouse
haha, i dun tink this circuit uses so much power to warrent such calculations, hehe, so anyone can help me design that type of circuit?
- Sun Feb 06, 2005 9:41 am
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
Re: LED lighthouse
NE5U,
it's tropical. I m pretty sure sunlight's aplenty all year round, Gee, I badly need a complete working circuit diagram now.
it's tropical. I m pretty sure sunlight's aplenty all year round, Gee, I badly need a complete working circuit diagram now.
- Sun Feb 06, 2005 6:52 am
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
Re: LED lighthouse
Chinese new year. So I have to settle this real quick! Oh gosh, today's the last day!
- Sun Feb 06, 2005 3:59 am
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
Re: LED lighthouse
pray tell what???
- Sat Feb 05, 2005 6:05 pm
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
Re: LED lighthouse
NE5U, I am from Singapore, a little country whom escaped the tidal wave. Yup, it's some sort of school project. What's an insolation value? I have enough for 4 AA batts. I do not have a solar cell now, so I will be able to get what the circuit needs. the batts are 130AAHC 1.2V min 1250mAh standard c...
- Sat Feb 05, 2005 8:04 am
- Forum: General Discussion
- Topic: LED lighthouse
- Replies: 31
- Views: 12998
LED lighthouse
I urgently need a circuit design. I need to power up 3 leds at 4.5v each. The leds need to be operating only in the dark. There are 2 sets of leds, they have to alternately switch on and off while operating (dimming in, holding and dimming out; one set on, the other off). There wont be AC source, so...