Search found 2133 matches
- Mon Mar 29, 2004 4:47 am
- Forum: General Discussion
- Topic: ultrasonic motion detector
- Replies: 5
- Views: 1294
Re: ultrasonic motion detector
I'm all for ultrasonics applications, but if it's motion detection you want, infra-red detectors are cheap, directional, and available in all types of ranges.
- Fri Mar 26, 2004 3:30 pm
- Forum: Computer Programming
- Topic: ACAD to G&M Codes
- Replies: 2
- Views: 1983
Re: ACAD to G&M Codes
Thank you, Caesar! Appreciate your reply!
Found someone with MasterCAD knowledge!
Fascinating what 3D modeling can do!
John
Found someone with MasterCAD knowledge!
Fascinating what 3D modeling can do!
John
- Thu Mar 25, 2004 4:07 pm
- Forum: General Discussion
- Topic: Air horn
- Replies: 7
- Views: 1753
Re: Air horn
How about 10 watts?
http://www.radioshack.com/product.asp?c ... id=32-2038
http://www.radioshack.com/product.asp?c ... id=32-2038
- Wed Mar 24, 2004 4:05 pm
- Forum: General Discussion
- Topic: Varying AC frequency
- Replies: 11
- Views: 3265
Re: Varying AC frequency
Not to discourage Sunil, but that's 10 octaves of frequency range! AND at 50 amps! Hope you have deep pockets for this project.
Could we ask what it is for, in case theres an alternative possibility to achieve your goal?
Could we ask what it is for, in case theres an alternative possibility to achieve your goal?
- Mon Mar 22, 2004 10:36 am
- Forum: General Discussion
- Topic: Cleaning circuit boards
- Replies: 11
- Views: 2547
Re: Cleaning circuit boards
If you had access to an ultrasonic cleaner, submerge the board in isopropyl alcohol and shake away. Repeat with clean alcohol, dry.
- Thu Mar 18, 2004 3:38 pm
- Forum: General Discussion
- Topic: Resistive spark plugs...
- Replies: 5
- Views: 1382
Re: Resistive spark plugs...
My 2 cents- The ozone disassociates chlorine from the thermoset plastic distributor cap. It's a chloride dusting.
Anybody got a lab?
John
Anybody got a lab?
John
- Wed Mar 17, 2004 3:34 pm
- Forum: General Discussion
- Topic: Half wave rectified mains...
- Replies: 6
- Views: 1612
Re: Half wave rectified mains...
One question, Miguel- Why?
Is this a technical feat or a frugal one?
John
Is this a technical feat or a frugal one?
John
- Mon Mar 15, 2004 3:03 pm
- Forum: Computer Programming
- Topic: ACAD to G&M Codes
- Replies: 2
- Views: 1983
ACAD to G&M Codes
My CNC machine uses "G & M" Codes to direct its' cutting tool in x,y, and z axis. If I draw a figure in AutoCad, any ideas on how I can convert those files to tool path motions? The ACAD files have all the point-to-point xyz coordinates, but the CNC machine wants ASCII commands to tell it where to g...
- Thu Mar 11, 2004 5:28 pm
- Forum: General Discussion
- Topic: spark plug voltage
- Replies: 5
- Views: 1542
Re: spark plug voltage
Don't! Sure fire way to fry your multimeter! Without serious monitoring equipment, you won't measure anything significant. Remove the plug from the head, ground its' threads, and yank away. Bright blue spark at gap says all is well. Wanna get fancy? Build a spark gap- two nails pointed at each other...
- Wed Mar 10, 2004 3:47 pm
- Forum: Computer Programming
- Topic: data logger for a temperature sensor
- Replies: 2
- Views: 2028
Re: data logger for a temperature sensor
GW- Try:
http://www.omega.com/newsearchengine/es ... mit=Search<p>Omega has loads of temp sensors/loggers/accessories.
Have a blast!!
John
http://www.omega.com/newsearchengine/es ... mit=Search<p>Omega has loads of temp sensors/loggers/accessories.
Have a blast!!
John
- Tue Mar 09, 2004 3:01 pm
- Forum: General Discussion
- Topic: Magnetrons
- Replies: 5
- Views: 1212
Re: Magnetrons
Those microwave power supplies make wonderful supplies for that Tesla Coil project your neighbors don't want you to build! 

- Sat Mar 06, 2004 7:09 pm
- Forum: General Discussion
- Topic: Best FET to use?
- Replies: 9
- Views: 2070
Re: Best FET to use?
Big project, Bern! I bought a Curtis DC Controller for an electric go-kart I built. 48 volt @ 200 Amps, and that was for a 1 HP DC motor. It used 8 MOSFETS. You'll have thermal considerations, load-sharing, shut-down protection, to name a few. If you still pursue building your own, one source is Adv...
- Fri Mar 05, 2004 3:57 am
- Forum: General Discussion
- Topic: UHF TV antennas
- Replies: 12
- Views: 2660
Re: UHF TV antennas
Thanks Dean! I appreciate your insight!
John
John

- Mon Mar 01, 2004 3:19 pm
- Forum: General Discussion
- Topic: Connecting Portable CD player to car radio
- Replies: 5
- Views: 1385
Re: Connecting Portable CD player to car radio
Or for $20, the RS will sell you a "CD-to-Cassette" Adapter- cat. no. 12-1999.
(Assuming your car radio has cassette)
(Assuming your car radio has cassette)
- Sat Feb 28, 2004 6:09 am
- Forum: General Discussion
- Topic: Wireless Remote Control troubleshooting question
- Replies: 15
- Views: 3707
Re: Wireless Remote Control troubleshooting question
Rather, using 12 vdc my have fried them.