Search found 110 matches
- Tue Sep 02, 2008 6:47 pm
- Forum: General Discussion
- Topic: 9.6 volt dc @1-2amp adapter for 12volt auto application
- Replies: 3
- Views: 2306
9.6 volt dc @1-2amp adapter for 12volt auto application
Can someone provide a circuit or source of a circuit that I can plug into my automobile 12 volt negative ground cigarette lighter receptacle to obtain 9.6 volt dc @ 1-2 amps. Also what size of heat sink will I need? Thanks Paul
- Thu Jun 12, 2008 5:30 pm
- Forum: General Discussion
- Topic: A DELUXE TEST BENCH VARIAC in NUTS AND VOLTS- June,2008
- Replies: 1
- Views: 1620
A DELUXE TEST BENCH VARIAC in NUTS AND VOLTS- June,2008
Really enjoyed Robert Reed's article on variacs. I wondered if someone could tell me more about the use of capacitor C12 and how it lowers the voltage from 120 volts ac to 9.7 volts ac, what factors influence the voltage drop, can a conventional cap be used or is an ac rated cap necessary, and how m...
- Wed Jun 11, 2008 3:06 am
- Forum: General Discussion
- Topic: LED'S as indicator lights on 110 volt a.c.
- Replies: 11
- Views: 5265
LED'S as indicator lights on 110 volt a.c.
Thanks for the helpful replies to my query. What is the electrical differences between an led and a high brightness led? Are there any markings or physical characteristics that would help in distinguishing an led from a high brightness led? Thanks Paul
- Tue Jun 10, 2008 1:41 am
- Forum: General Discussion
- Topic: LED'S as indicator lights on 110 volt a.c.
- Replies: 11
- Views: 5265
LED'S as indicator lights on 110 volt a.c.
Is it possible to use leds as indicator lights on ll0 volt a.c. circuits without rectification? I believe I saw some reference to this in a NUTS AND VOLTS Magazine but can't find it. If so how would you do it? Thanks Paul
- Tue Aug 28, 2007 7:30 pm
- Forum: General Discussion
- Topic: led primer
- Replies: 2
- Views: 2356
led primer
Can someone suggest a reference regarding the various types of leds and and their current and voltage requirements? I've seen advertisements offering leds with various degrees of brightness and sizes and wonder if they have different requirements? Thanks Paul
- Wed Dec 13, 2006 5:45 pm
- Forum: General Discussion
- Topic: Blinking leds
- Replies: 7
- Views: 4589
Blinking leds
Thanks for the replies. I would rather build than buy and went to the site suggested. They have a schematic and I will follow that. Paul
- Mon Dec 11, 2006 6:00 pm
- Forum: General Discussion
- Topic: Blinking leds
- Replies: 7
- Views: 4589
Blinking leds
Is it possible to construct a circuit that will flash(blink-turn on then off)one to three leds and be powered by several AA cells or 9v battery? Thanks Paul
- Thu Aug 17, 2006 7:08 pm
- Forum: General Discussion
- Topic: alliance model u-100 controller and rotor hookup
- Replies: 1
- Views: 1936
alliance model u-100 controller and rotor hookup
I have an alliance model u-100 controller but am not sure if the alliance rotor I have is for this controller--as no markings on rotor. I looked inside the rotor case and found a wire wound device encircling the rotor shaft. There are no numbers or markings on the rotor terminals but the controller ...
- Sat May 06, 2006 6:19 pm
- Forum: General Discussion
- Topic: narco superhomer vht-3
- Replies: 2
- Views: 2317
- Wed Apr 26, 2006 7:59 pm
- Forum: General Discussion
- Topic: narco superhomer vht-3
- Replies: 2
- Views: 2317
narco superhomer vht-3
Does anyone recall the hook up for this radio or have a schematic? On the rear is a red wire,a rca jack, a motorola jack, and a round chassis plug with 3 rows of two pins. Thanks Paul
- Sun Dec 04, 2005 6:55 pm
- Forum: General Discussion
- Topic: circuit to energize a relay for 30 seconds
- Replies: 5
- Views: 3197
Re: circuit to energize a relay for 30 seconds
Thanks to all of those who responded. My idea was to turn the circulator pump on just before using the hot water in order to conserve the pump, electricity, and the water heater. The temperature controlled circuit is a good idea that I had not considered. Presently I turn on the pump and try the wat...
- Sat Dec 03, 2005 7:44 pm
- Forum: General Discussion
- Topic: circuit to energize a relay for 30 seconds
- Replies: 5
- Views: 3197
circuit to energize a relay for 30 seconds
I live on a farm and have to watch our water(well)use. I put a manually operated water circulator in our hot water line and it takes approximately 30 seconds to get hot water to the faucet. I would like to construct a circuit that I could activate that would turn the circulator pump on for 30 second...
- Thu Nov 10, 2005 6:40 pm
- Forum: General Discussion
- Topic: led indicator light
- Replies: 2
- Views: 1811
led indicator light
I just attached two halogen driving lights below the front bumper of my ford ranger. I would like to wire in an led indicator light at the switch in the cab so I can tell when these lights are on. Can someone refer me to a source for this circuit. Thanks Paul
- Fri Jun 24, 2005 2:41 pm
- Forum: General Discussion
- Topic: DOA
- Replies: 16
- Views: 6770
Re: DOA
Thanks for all of the thoughtful advice. Will get back with you when resolved. Heartened
- Mon Jun 20, 2005 6:39 pm
- Forum: General Discussion
- Topic: DOA
- Replies: 16
- Views: 6770
DOA
Any advice on how to deal with DOA's from the internet? Won't respond to emails. Disillusioned