Where to buy? - Servo pigtail

[ramius-ii]

Hi All]http://www.subcommittee.com/forum/icon_smile.gif[/img]
I am looking for the servo cable with connector (pigtail) that uses the twisted cable and not the flat type. Any ideas?

Thanks, Ed

[bigdave]

Hi Ed, If you can't

Hi Ed, If you can't find them, make your own. You can buy the ends at almost any hobby shop. Just solder your own wires in between and twist them. I do it all the time. Dave.

[ramius-ii]

Hi Dave]http://www.subcommittee.com/forum/icon_smile.gif
Thanks for the

Hi Dave]http://www.subcommittee.com/forum/icon_smile.gif[/img]
Thanks for the reply and I was trying to avoid having to construct cables. I could use one of the extension cables and cut off one end which would be a waste. I'm getting ready to produce a series of boards and I would like to keep the production costs as low as possible.

Best, Ed

[Guest]

You can get the flat

You can get the flat type, peel the wires apart and twist them together using a hand drill. Takes only a minute or so!

Andy

[graydon]

Although my experience in this

Although my experience in this comes from a different hobby, I twist wires all the time. I use teflon insulated wire and twist two or three wires using a cordless drill. I get nice tight, even twists. I highly recommend the teflon wire if you're not using it already. You can buy it quite reasonably from Apex Jr http://www.worldwidewire.com

Here's an example of my wire twisting...

[bigdave]

]http://www.subcommittee.com/forum/icon_cool.gif

]http://www.subcommittee.com/forum/icon_cool.gif[/img]

[graydon]

]http://www.subcommittee.com/forum/icon_cool.gif
Dave,

Good guess. That is one

]http://www.subcommittee.com/forum/icon_cool.gif[/img]

Dave,

Good guess. That is one of my 18W heads. All tubes, old technology but modern materials and workmanship. They sound great.

I wonder if we could put vacuum tubes into a sub?

[ramius-ii]

Hi Graydon]http://www.subcommittee.com/forum/icon_lol.gif 6L6's are great

Hi Graydon]http://www.subcommittee.com/forum/icon_lol.gif[/img] 6L6's are great and the 5881 was a bit better. The plates are thicker and have a more "coarse" surface providing less "bounce back" of the electrons. If you can find them, the tubes that end in "A" and "AB" also have some advantages. Best example would be the 5U4. A 5U4 plain is good for 1/2 amp, the 5U4A, 3/4 amp, and the 5U4AB a whole 1 amp!

I've been a long time advocate of twisted wires in most applications. The twisting adds a small amount of capacitance which is good for noise reduction. Especially with servo's, speed controls, etc. The only catch is in high speed data applications, twisting can be counter productive as it rounds off the square waves. There is also an impedance factor to twisting to consider.

I agree with you fully about teflon wire. Most teflon wire uses silver, which, is the best conductor. It also makes projects look alot better as the insulation does not want to "melt back".

Tubes in you sub would probably mean you would have to go to the "acorn" type unless you have a really big sub!

Best, Ed