Search found 11 matches

by j611
Fri Sep 19, 2003 9:13 am
Forum: General Discussion
Topic: Redesign of Floursent Light
Replies: 9
Views: 2107

Re: Redesign of Floursent Light

Hi Edd,
Yes, this is the Radio Shack small hand held flourescent light. I bought all I could find in my area, especially at such a cheap price of $ 1.98 each. Any help getting this 3 volt unit to work using 4 volts will be greatly appreciated. Again thank you Edd for your help.
by j611
Fri Sep 19, 2003 8:59 am
Forum: General Discussion
Topic: Solar Battery Charger Question
Replies: 1
Views: 891

Solar Battery Charger Question

I would like to know if the solar panel I have will charge the battery I have. Here are the specs for the solar panel and battery.<p>Solar Module<p>Voltage: Open Circuit 8.0 Amperage: Short Circuit 0.156 VMP: 6.7 Volts IMP: 0.145 AMPS Watts: 1.0<p> Battery<p>12 Volts 17 Watts Floating Charge Voltage...
by j611
Wed Sep 17, 2003 9:01 pm
Forum: General Discussion
Topic: Redesign of Floursent Light
Replies: 9
Views: 2107

Re: Redesign of Floursent Light

Hi Edd,
The wires were connected properly. The light was on and the transistor started smoking. The markings on the transistor are C2328A and below that Y-932. Thanks for your help.
by j611
Wed Sep 17, 2003 1:47 pm
Forum: General Discussion
Topic: Redesign of Floursent Light
Replies: 9
Views: 2107

Re: Redesign of Floursent Light

How can I operate a flourscent light built to run off of 2 AA batteries, using a 4 volt battery? This is just a little project I am working on using a 4 volt rechargable battery. I have a small solar panel that came with the battery for recharging. Thanks.
by j611
Wed Sep 17, 2003 1:19 pm
Forum: General Discussion
Topic: Need to reduce 4 volts to 3 volts
Replies: 9
Views: 2341

Re: Need to reduce 4 volts to 3 volts

Hi Russ,
If you mean how much current does it draw, I am guessing 1 amp or even lower. I am not real sure at this moment. I can measure it when I get home and let you know tonight.
by j611
Wed Sep 17, 2003 1:13 pm
Forum: General Discussion
Topic: Redesign of Floursent Light
Replies: 9
Views: 2107

Redesign of Floursent Light

I am trying to figure out a way to operate a floursent light that uses 2 AA batteries to run off of a 4 volt battery. I hooked up the 4 volt battery to the light and the only transistor on the board began to smoke. I looked all over the web for information on the transistor, but did not find much. W...
by j611
Wed Sep 17, 2003 12:44 pm
Forum: General Discussion
Topic: Need to reduce 4 volts to 3 volts
Replies: 9
Views: 2341

Need to reduce 4 volts to 3 volts

I am trying to reduce a 4 volt battery to a 3 volt source. I have used a 1 ohm 5 watt resistor, which drops the voltage to 2.9 volts, but the resistor is eating up the battreies current. I think the resistor was using up around 1 amp of current. Can someone help me design a voltage regulator circuit...
by j611
Wed Sep 10, 2003 9:28 am
Forum: General Discussion
Topic: Question about LED project
Replies: 6
Views: 1627

Question about LED project

I have a 4 volt 4.6 amp hour lead acid battery that I want to power 3 or 4 super bright white Leds. Each of the Leds is listed at 20 ma. The reverse voltage is 5v and the forward voltage is 4 v max. I thought about putting them in series, but need help calculating the current limiting resistors. Tha...
by j611
Thu Aug 28, 2003 6:42 am
Forum: General Discussion
Topic: Flourescent Light Voltage
Replies: 12
Views: 3744

Flourescent Light Voltage

Can someone tell me how much voltage is required to power the boards that run the small flourescent tubes used to backlight a laptop screen? Thank you.
by j611
Wed Aug 27, 2003 12:58 pm
Forum: General Discussion
Topic: Voltage reduction
Replies: 5
Views: 2156

Re: Voltage reduction

The flourescent light I am using orginally operates on two AA batteries ( 3 volts ). I am wanting to power it with the 4 volt battery I have. Thus I need to reduce the voltage by 1 volt.
by j611
Wed Aug 27, 2003 10:47 am
Forum: General Discussion
Topic: Voltage reduction
Replies: 5
Views: 2156

Voltage reduction

I have a 4 volt 4.6 amp hour lead acid battery that I want to use to power a 3 volt flourescent light. The question I have is, what is the best way to drop from 4 volts to 3 volts and not use up the current I want going to the light? I would like to retain as much of the 4.6 amps from the battery so...