Search found 10 matches

by Roger Dodger old codger
Tue Jul 04, 2006 3:30 pm
Forum: General Discussion
Topic: currious question about led displays.
Replies: 5
Views: 1410

Every one that looks at a digital display know a six is not a b. Displays that use single bulbs or led clusters dont lean. Printed letters dont lean. Why would a seven segement display be associated with script letters? Electronics is the best hobby. stay with it and leave the women alone. Answers c...
by Roger Dodger old codger
Sat Jun 17, 2006 8:53 am
Forum: General Discussion
Topic: Lightning Detector
Replies: 4
Views: 1017

Lightning Detector

Does anyone have info, schematics, or a web site about lightning detectors?
Thanks :smile:
by Roger Dodger old codger
Mon Apr 24, 2006 6:39 pm
Forum: General Discussion
Topic: noise cancellation circuits
Replies: 6
Views: 1399

noise cancellation circuits

I was watching some men and women shoot skeet this weekend with their loud loud shot guns and noticed that they had on ear muffs. But a friend informed me they would amplify normal talking but when the gun was shot it would muff the sound. I tried his and wow , no loud booom! Where can I find schema...
by Roger Dodger old codger
Mon Dec 19, 2005 6:13 pm
Forum: General Discussion
Topic: SEDOKU
Replies: 19
Views: 3847

Re: SEDOKU

I make a large 2 digit display, 5.5inches wide by
9 inches high. It has a four button controller: up,down,enter, and reset. It can be used in the open sunlight as well as indoors.
If your are interested email me.
Roger
by Roger Dodger old codger
Fri Nov 11, 2005 4:38 pm
Forum: General Discussion
Topic: Help with LED
Replies: 31
Views: 5379

Re: Help with LED

You can start with this site
http://www.theledlight.com/technical.html

yep things have changed in 15 yrs. BIG TIME.

EVERYTHING

rogerdoger
by Roger Dodger old codger
Tue Oct 18, 2005 6:18 pm
Forum: General Discussion
Topic: Solid State Relay
Replies: 4
Views: 744

Re: Solid State Relay

Ok Guys, Thanks for the help. I decided to go with one second on the hold time for the selonoid.<p>Now another.. When the gate opens by its weight, it is pretty much balanced so it will open and close with a lite touch. It opens and stops against another selonoid. It is pushed closed by this one whe...
by Roger Dodger old codger
Tue Oct 18, 2005 6:16 pm
Forum: General Discussion
Topic: Remote SSR
Replies: 0
Views: 434

Remote SSR

Ok Guys,<p>Thanks for the help. I decided to go with one second on the hold time for the selonoid.<p>Now another.. When the gate opens by its weight, it is pretty much balanced so it will open and close with a lite touch. It opens and stops against another selonoid. It is pushed closed by this one w...
by Roger Dodger old codger
Sun Oct 16, 2005 7:29 pm
Forum: General Discussion
Topic: Solid State Relay
Replies: 4
Views: 744

Solid State Relay

I want to use a micro controller to fire a SSR that will apply 120 volts ac to a selonoid that will pull a latch that opens a gate. The micro and SSR is 50 yds or so from the selonoid. Question: Is a 1/4 second turn on of the SSR long enough to insure a solid pull of the selonoid to pull the latch. ...
by Roger Dodger old codger
Fri Jul 22, 2005 8:15 pm
Forum: General Discussion
Topic: AC selonoid
Replies: 8
Views: 2358

Re: AC selonoid

Hey Guys,<p>Thanks a bunch for the replys and all the help. I have been helped. I cant wait to give the suggestions a try.
I wish I would have came here sooner. It is good to know that help is available. Again thank you all very very much.
Roger Dodger and old codger
by Roger Dodger old codger
Tue Jul 19, 2005 6:54 pm
Forum: General Discussion
Topic: AC selonoid
Replies: 8
Views: 2358

AC selonoid

I have a system to fire 9 ac selonoids to release skeet. The Uc, when called on, turns on an OPTO-22 solid state relay with zero-crossing and built in snubber. It then momentarily turns on it's selonoid. The problem is that on power up of system sometimes 1,2,or three different selonoids will releas...