Search found 56 matches
- Mon Sep 08, 2003 9:20 am
- Forum: General Discussion
- Topic: LED fading when driven by 4017
- Replies: 8
- Views: 4543
Re: LED fading when driven by 4017
I've spent a few hours attempting to do what you want to do. It's just not there, without the glow of a filament you can't get that slow loss of light. Because the LED is dependant on current, when it gets below the thresehold, it just goes out. I wanted to do the same thing by shining ultra brights...
- Sun Sep 07, 2003 9:10 pm
- Forum: General Discussion
- Topic: My Kenwood TS440S diode source
- Replies: 6
- Views: 4301
Re: My Kenwood TS440S diode source
CATO, this is your lucky day, only because my project didn't work and I had to get away from it for awhile.<p>Try this [url=http://www.moyerelectronics.com,]www.moyerelectronics.com,[/url] they have your NTE555A for $1.58 each. You can buy just one or you can buy one hundred.<p>While you are there d...
- Sun Sep 07, 2003 9:01 am
- Forum: General Discussion
- Topic: My Kenwood TS440S diode source
- Replies: 6
- Views: 4301
Re: My Kenwood TS440S diode source
I took a look into my books, the BA282 crosses to a NTE555A, which is a Schottky Barrier Diode. It is a silicon diode for VHF Band switching. Since there is an NTE part number you should be able to get this at any NTE dealer or distributer.<p>Part of being an electronics hobbyist is the ability to f...
- Fri Sep 05, 2003 2:25 pm
- Forum: General Discussion
- Topic: IR transmitter-detector
- Replies: 11
- Views: 5742
Re: IR transmitter-detector
I'm sitting here with the book in my lap that has the circuits you may want and need.<p>One circuit is for PFM Ir transmitter using a 555 and Ir emitter, and, of course a few other gadgets<p>The other being the receiver circuit using 565 PLL chip, a 386 amp chip and, a Op amp. Of course other compon...
- Thu Sep 04, 2003 7:49 pm
- Forum: General Discussion
- Topic: battery cables
- Replies: 7
- Views: 3360
Re: battery cables
You can always clean those battery parts with baking soda and water.<p>Dampen the parts you want cleaned and then sprinkle a little baking soda on them and let them sit for awhile. Rinse with clean water. Next, you can scrape them nice and shiney with your pocket knife.<p>BEFORE you mess around with...
- Thu Sep 04, 2003 9:31 am
- Forum: General Discussion
- Topic: led array
- Replies: 6
- Views: 3302
Re: led array
granada, great. Come on down and I'll teach you a few more words. We can check out my strange LEDs.
tamale, then <p>[ September 04, 2003: Message edited by: sundancer87 ]</p>
tamale, then <p>[ September 04, 2003: Message edited by: sundancer87 ]</p>
- Tue Sep 02, 2003 2:06 pm
- Forum: General Discussion
- Topic: n/c solenoid HELP!!!!!!!!!!
- Replies: 2
- Views: 1635
Re: n/c solenoid HELP!!!!!!!!!!
Couldn't you set up a 555 timer circuit with a trimmer for your adjustable time base?
- Tue Sep 02, 2003 9:08 am
- Forum: General Discussion
- Topic: led array
- Replies: 6
- Views: 3302
Re: led array
Great site Wayne, I didn't realize they were getting put into so many different packages, and available to the public at that. They even have affordable pricing!!<p>I never met an LED that I didn't like.
Thanks for the heads up, now my budget is really going to hurt.
Thanks for the heads up, now my budget is really going to hurt.
- Mon Sep 01, 2003 8:32 pm
- Forum: General Discussion
- Topic: Flourescent Light Voltage
- Replies: 12
- Views: 6360
Re: Flourescent Light Voltage
Dacflyer, I live in a solar house so all my power is inverted. I have a Trace 2412, 2400 watts, to run everything in the house. It also is a modified sine wave inverter.<p>As for lighting, all my lights are compact flourescents with electronic ballasts. The compacts that I installed ten years ago ar...
- Mon Sep 01, 2003 8:20 pm
- Forum: General Discussion
- Topic: led array
- Replies: 6
- Views: 3302
Re: led array
Thanks k7elp60 for the info. For this project I am only going to use RGY, I save the whites and blues for 'special projects'.<p>I said a 12 volt power supply which is really going to be a walwart so I'll figure a little more on the resistance to compensate for the higher voltage of the wart.<p>My pr...
- Mon Sep 01, 2003 10:56 am
- Forum: General Discussion
- Topic: led array
- Replies: 6
- Views: 3302
led array
I know I'm gonna get yelled at here but, I need to know how many LEDs I can put in series using one current limiting resistor.<p>I plan on using 12volt power supply and I thought I had read somewhere that one 470 ohm resistor would work. I just forgot how many I could put on the string. :confused: