Search found 284 matches

by gerty
Thu Mar 28, 2013 7:19 am
Forum: Nuts & Volts Magazine Discussions
Topic: Garage Door Closer Featured in January 2012
Replies: 7
Views: 5782

Re: Garage Door Closer Featured in January 2012

[quote="BobCochran13"][size=150][color=#0000FF]I know this is a really late post, but I worked with someone's garage door opener for a while. The unit has a safety device that prevents the door from closing if someone moves into the path of the door. In fact I had to replace the safety device itself...
by gerty
Thu Mar 28, 2013 7:09 am
Forum: General Discussion
Topic: Pi Day
Replies: 7
Views: 1937

Re: Pi Day

[quote="dacflyer"]they say PI R Square, i still say PIE R Round.
:D[/quote]
Around here it's PI R Square and Cornbread R round :smile:
by gerty
Fri Mar 08, 2013 6:55 am
Forum: General Discussion
Topic: Dc to DC
Replies: 12
Views: 2719

Re: Dc to DC

"They appear to be well made, have brass standoffs an LED and a 10T trimmer... All for $9.00!"

I hope you bought a few spares, should this one disapear ...
by gerty
Wed Mar 06, 2013 7:20 am
Forum: General Discussion
Topic: Anti-fox device - Help needed!!
Replies: 13
Views: 3532

Re: Anti-fox device - Help needed!!

Here you go. http://www.harborfreight.com/driveway-alert-system-wireless-69590.html It's a self contained ,battery powered motion detector with a beeper alarm. and it's less than $20. A friend just put one in his store to alert him of a customer while he's in the back room. No BB gun, no pepper spra...
by gerty
Mon Feb 25, 2013 6:51 am
Forum: General Discussion
Topic: Sidetracked by the temperature
Replies: 5
Views: 1765

Re: Sidetracked by the temperature

I know it's not exactly the same, but fluorescents are like that, they don't like to light up when cold.
by gerty
Tue Feb 19, 2013 7:41 am
Forum: General Discussion
Topic: alternator question
Replies: 16
Views: 4181

Re: alternator question

by gerty
Tue Feb 19, 2013 6:48 am
Forum: General Discussion
Topic: alternator question
Replies: 16
Views: 4181

Re: alternator question

Does your jeep have a Delco -Remy alternator? If so you might find one from a suv or caddy that has a higher output rating. The amp rating used to be stamped near the tab for the adjusting bolt, not sure any more. Another vehicle to look at is an old ambulance, cop car or other emergency vehicle, th...
by gerty
Tue Feb 12, 2013 7:44 am
Forum: General Discussion
Topic: Noisy motor
Replies: 5
Views: 2672

Re: Noisy motor

Are you using this rf receiver by any chance? http://www.digikey.com/product-detail/en/FCTN-RLY4-315-2/FCTN-RLY4-315-2-ND/340079 I used one for a motor control project, and the motor was remote mounted, about 10' away. The receiver was 2' from a pwm control board and refused to run properly until I ...
by gerty
Mon Jan 28, 2013 11:01 am
Forum: General Discussion
Topic: Desoldering Temperature
Replies: 6
Views: 1663

Re: Desoldering Temperature

Another consideration...the newer lead free solder takes a higher temperature.
I usually give my students an old circuit board and have them desolder some of the components to get the feel of how to set the temperature.
by gerty
Sat Jan 19, 2013 9:41 pm
Forum: General Discussion
Topic: High Voltage Circuit
Replies: 16
Views: 3711

Re: High Voltage Circuit

Here's someone that did it on camera http://www.youtube.com/watch?v=juEhuDfbPLo
by gerty
Fri Nov 30, 2012 7:23 am
Forum: General Discussion
Topic: RS-232 led tester
Replies: 3
Views: 1039

Re: RS-232 led tester

IIRC, and we're thinking about the same thing, the one I have has leds connected in series with whatever device is connected to the cable. Transmit led woulld light up when data sent to device, recieve would light up when device talked back to computer. It had db 25 connectors on each end, and with ...
by gerty
Tue Nov 27, 2012 7:31 am
Forum: General Discussion
Topic: Would the US electrical code allow this ?
Replies: 9
Views: 2913

Re: Would the US electrical code allow this ?

As already stated, you don't switch neutral, and you don't use the ground as a current carrying conductor.
If you had another conductor from switch box to light, you could change switch out for a 3 way, one position = light the other position = led. But I guess you already knew that :grin:
by gerty
Thu Nov 22, 2012 3:03 pm
Forum: General Discussion
Topic: Happy Thanksgiving
Replies: 16
Views: 5896

Re: Happy Thanksgiving

Happy Thanksgiving to all! We had our strangest turkey day meal of all this year, Steak!!
Turkey tomorrow at our sons house... :grin:
by gerty
Mon Nov 19, 2012 6:36 am
Forum: General Discussion
Topic: Bypass video on 2012 Dodge
Replies: 3
Views: 1100

Re: Bypass video on 2012 Dodge

This is what I found https://www.youtube.com/watch?v=B3TfM9ApP6c
Apparently it has several functions, and as Moe said $240.00.
by gerty
Tue Nov 06, 2012 7:47 am
Forum: Reader Projects
Topic: ReUsing Power Wart Devicer Connectors
Replies: 5
Views: 4503

Re: ReUsing Power Wart Devicer Connectors

One of my students went to a Goodwill store and found a box of 27 wall warts, all different sizes and voltages. He paid $.75 ea for the whole box. I went to tha same store about a year later and bought a box of 10 for $10...inflation I guess......