hookup wire

sewerwisp · 19th September 2010, 08:23 PM

can anyone recommend where to get different coloured rolls of good soft, pliable, and easy to work with hookup wire? I'd like rolls of red, green, black, blue, white, etc. Not interestd in silver, I guess, unless pressured, then I wilt like a dandelion.

Thanks, Tom

bob91343 · 19th September 2010, 09:22 PM

Any full line distributor or electronics part store will have what you want. Belden sells a kit of five or six rolls of hookup wire, for instance, that can be gotten from Mouser or Allied or one of those.

sewerwisp · 20th September 2010, 10:43 PM

Thank you Bob, I will look at Mouser or Allied. Have dealt with both. Also, I would like to know if my 3 feet long homemade interconnects have too high capacitance. I measured from shield to center conductor and got 0.23 nf. I have read a couple of articles, and most of the conclusions were not to worry unless you are up into the 1-5 nf range.
Any opinions? I have listened to them, and they sound OK.
Tom

bob91343 · 21st September 2010, 12:30 AM

I think most shielded wire is around 30 pF per foot. Add maybe 2-5 pF for each RCA plug. That makes a 3 ft cable nearly 100 pF. Yours are double that. Yet, it's probably not too much.

The way to know that is the compute the reactance of the cable capacitance at the highest frequency of interest and compare that value to the source impedance of the driving signal. And you have to add the input capacitance of the load as well.

Once you perform this calculation a few times you will realize why people use cathode follower buffers and low impedance lines.

I wouldn't go by a rule of thumb; you don't know the assumptions and you don't know if what you have applies.

19th September 2010, 08:23 PM	#1
sewerwisp diyAudio Member Join Date: Sep 2008	hookup wire can anyone recommend where to get different coloured rolls of good soft, pliable, and easy to work with hookup wire? I'd like rolls of red, green, black, blue, white, etc. Not interestd in silver, I guess, unless pressured, then I wilt like a dandelion. Thanks, Tom

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Looking for a hookup wire supplier	kavermei	Tubes / Valves	8	30th November 2009 09:42 PM
Hookup wire	Buzzy	Solid State	6	4th July 2008 01:39 AM
Aluminum Hookup Wire	jsa_ind	Everything Else	14	13th January 2007 09:05 AM
Hookup Wire Q	matthewm	Chip Amps	3	22nd November 2006 04:06 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

19th September 2010, 09:22 PM	#2
bob91343 diyAudio Member Join Date: Mar 2010	Any full line distributor or electronics part store will have what you want. Belden sells a kit of five or six rolls of hookup wire, for instance, that can be gotten from Mouser or Allied or one of those.

20th September 2010, 10:43 PM	#3
sewerwisp diyAudio Member Join Date: Sep 2008	Thank you Bob, I will look at Mouser or Allied. Have dealt with both. Also, I would like to know if my 3 feet long homemade interconnects have too high capacitance. I measured from shield to center conductor and got 0.23 nf. I have read a couple of articles, and most of the conclusions were not to worry unless you are up into the 1-5 nf range. Any opinions? I have listened to them, and they sound OK. Tom

21st September 2010, 12:30 AM	#4
bob91343 diyAudio Member Join Date: Mar 2010	I think most shielded wire is around 30 pF per foot. Add maybe 2-5 pF for each RCA plug. That makes a 3 ft cable nearly 100 pF. Yours are double that. Yet, it's probably not too much. The way to know that is the compute the reactance of the cable capacitance at the highest frequency of interest and compare that value to the source impedance of the driving signal. And you have to add the input capacitance of the load as well. Once you perform this calculation a few times you will realize why people use cathode follower buffers and low impedance lines. I wouldn't go by a rule of thumb; you don't know the assumptions and you don't know if what you have applies.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)