Search found 298 matches

by gerty
Mon Oct 22, 2012 10:37 am
Forum: General Discussion
Topic: 12VDC fan driven by 120VAC...
Replies: 9
Views: 4680

Re: 12VDC fan driven by 120VAC...

There are a few types listed here, personally I have no experience with them.
http://www.daycounter.com/Circuits/Tran ... lies.phtml

And another..http://ww1.microchip.com/downloads/en/a ... 00954A.pdf
by gerty
Mon Oct 22, 2012 9:26 am
Forum: General Discussion
Topic: transformer question - how to calculate?
Replies: 6
Views: 3482

Re: transformer question - how to calculate?

Turns ratio = Np/Ns
Where Np = number of turns in primary and Ns = number of turns in secondary.

Voltage ratio Vp/Vs = Np/Ns

wher Vp is voltage on the primary and Vs is voltage on the secondary.
by gerty
Thu Sep 27, 2012 5:05 pm
Forum: General Discussion
Topic: Old N&V Issues!
Replies: 6
Views: 3413

Re: Old N&V Issues!

No concern..just a bad joke..
by gerty
Wed Sep 26, 2012 8:57 am
Forum: General Discussion
Topic: Old N&V Issues!
Replies: 6
Views: 3413

Re: Old N&V Issues!

Make sure the statute of limitations has run out first
by gerty
Sat Sep 15, 2012 8:43 pm
Forum: General Discussion
Topic: Bad Bulbs?
Replies: 19
Views: 8090

Re: Bad Bulbs?

Another alternative, if you have access to do it, wire all three bulbs in series. That'll give you the dim light, and lower the voltage to the bulbs.
by gerty
Sun Sep 02, 2012 8:36 am
Forum: General Discussion
Topic: Ceiling Fan wiring
Replies: 26
Views: 12497

Re: Ceiling Fan wiring

Wouldn't the easiest thing be adding a wall mounted variable speed control and leave the the fan itself on high speed.
by gerty
Sun Sep 02, 2012 8:33 am
Forum: General Discussion
Topic: WHERE ARE THEY?
Replies: 32
Views: 18704

Re: WHERE ARE THEY?

[quote] In Oklahoma, they've phased out all the electronics programs in the vo-tech schools and it's nearly the same in Missouri is nearly the same. State-supported vocational electronics programs are rare. Haven't seen electronics coorespondence courses in a long time. Only a few private schools st...
by gerty
Fri Aug 24, 2012 10:38 pm
Forum: General Discussion
Topic: WHERE ARE THEY?
Replies: 32
Views: 18704

Re: WHERE ARE THEY?

ETO has a similiar thread, they must be slow also http://www.electro-tech-online.com/members-lounge/128703-forum-dying.html I stop in a couple of times a day, like the others if I have nothing to contribute, I just browse around and leave. I still subscribe to N&V , and as far as pic projects, I...
by gerty
Wed Aug 22, 2012 7:26 am
Forum: Computer Programming
Topic: CAN'T CLICK LINKS
Replies: 3
Views: 4488

Re: CAN'T CLICK LINKS

Have you tried to right click , then go down to print?
I can't picture what that yellow splatter you mentioned looks like. Since it's with all 3 browsers, have you checked mouse settings, for "pointer"
by gerty
Mon Jul 23, 2012 7:58 am
Forum: General Discussion
Topic: 4558D test circuit... (NTE 778A)
Replies: 3
Views: 3484

Re: 4558D test circuit... (NTE 778A)

"Sound advice" above :lol:
by gerty
Fri Jul 13, 2012 11:01 am
Forum: General Discussion
Topic: UL listing...dubious assurance
Replies: 5
Views: 3192

Re: UL listing...dubious assurance

I bought an extension cord at a tool sale held at our civic center from one of those traveling vendors. It was marked 16/3 and was 50' long. About a year later I heard about them in the news being sued by several customers. Seems they purchased the same cords and, during proper usage, the cords had ...
by gerty
Tue Mar 27, 2012 9:09 am
Forum: General Discussion
Topic: Fluorescent Lighting
Replies: 13
Views: 7278

Re: Fluorescent Lighting

The way I understand it, the back panel, the one that covers the ballast, must be grounded. Maybe an issue of the paint not allowing that. The reason for that panel needing a ground is it helps the gasses ionize in the tube, much like the band around one of those U shaped strobe light tubes. http://...
by gerty
Tue Mar 13, 2012 6:44 am
Forum: General Discussion
Topic: Transmitter Modulators
Replies: 68
Views: 42666

Re: Transmitter Modulators

[quote]Yeah low activity here. Strange really.

[/quote]
I would participate if I was knowledgable in the subject matter, but in cases like this I find it better to keep my mouth shut :grin:
by gerty
Mon Feb 06, 2012 6:26 am
Forum: General Discussion
Topic: What's Going On??
Replies: 18
Views: 10804

Re: What's Going On??

Same here, plus I cannot stay logged on. I frequent several sites and this is the only one that wont let me stay logged on.
by gerty
Fri Jan 06, 2012 8:38 pm
Forum: General Discussion
Topic: Ni Cad battery packs to Ni-MH
Replies: 7
Views: 3770

Re: Ni Cad battery packs to Ni-MH

I had them rebuild an old 12v cordless drill battery.
http://www.primecell.com/nimhconv.htm

The conversion went from ni-cad to ni-mh. I used the drill (Makita) for roughly 3 more years, untill it committed suicide by jumping off a 6' stepladder. I used the original ni-cad charger.