CSC

Conductor resistance ( Leiterwiderstand )

5 posts in this topic

Specific electrical resistance, electrical conductivity, Conductor resistance

Spezifischer elektrischer Widerstand, elektrische Leitfähigkeit, Leiterwiderstand

nach vielen Fragen, bezüglich der Kabellänge versuche ich mal mit folgendem zu helfen.

After many questions regarding the length I try to help with the following

Das Bespiel gibt den Widerstand eines 100 meter langen Kupferkabels mit 1,5mm² Querschnitt an.

The example section specifies the resistance of a 100 meter long copper cable 1, 5 mm²

100m , 1,5mm², Kupfer bei 20°C = 1,19 Ω

100m, 1,5 mm², Copper at 20ºc = 1,19 Ω

I HOPE IT HELPS TO UNDERSTAND THE PROBLEM !

I hoffe das es hilft das Problem zu verstehen !

GREETS

kabellänge.bmp

Edited by CSC

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Specific electrical resistance, electrical conductivity, Conductor resistance

The example section specifies the resistance of a 100 meter long copper cable 1, 5 mm²

100m , 1,5mm², Kupfer bei 20°C = 1,19 Ω

100m, 1,5 mm², Copper at 20ºc = 1,19 Ω

I HOPE IT HELPS TO UNDERSTAND THE PROBLEM !

I hoffe das es hilft das Problem zu verstehen !

GREETS

Hi,

For the midiboxes inside wiring the preferably is using the ribbon cable which are ( from wikipedia ) :

..The wire is usually stranded copper wire, usually either 0.32, 0.20, or 0.13 mm2 (22, 24, or 26 AWG)...

The 10 m ribbon cable single wire has the similar resistance ~ 1,19Ω.

Regards,

Janis

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nach vielen Fragen, bezüglich der Kabellänge versuche ich mal mit folgendem zu helfen.

After many questions regarding the length I try to help with the following

Resistance is not the limiting factor for maximum cable length in MIDIboxes - capacitance and other parasitary effects usually are. Janis has it right with his example.

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Yo. I dont know the background for this topic, but if u have a smart phone, there is excelent apps for calculating this stuff. I use ElectroDroide, it is indeed the best tool for electronics I have ever had.

If ribbon cable is too noisy, have one ever considered using an utp cable instead?

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Background from this topic was a small answer for members who want to get some informations about the cable length, if they only find the answer,

that the cable length... has to be short as possible.

and for sure, this not only the point for the maximum cable length factor but better than searching hours in the Web for a little answer...

In this case, for a better understanding why i typed these in, was...

Best cable i could chance, for a better connection, was the

3M - 3302-40 - RIBBON CABLE, 40WAY, 30.5M (with PVC Polyvinyl chloride Jacket) (non drilled) (Farnell Order Code: 8608636)

for the

3M - 2010-40 - RIBBON CABLE, 40WAY, 30.5M (with Polyolefin Jacket) (drilled) (Farnell Order Code: 4140679)

with same length.

I think, the Insolation of the cable, was the point.

I had to connect Encoder to the DIN Boards with a minimum length between 25-30 cm.

The signal with the standard "tinned" cable was so terrible, and bad for sure when i touched it.

The notes are spinning around......

I soldered the Encoder with the "Rainbow Drilled" Cable, and the same length and finish.

Good events and a stable connection, with the same length.

There was not only the cable length the problem, only the Material..

"but it had to do with the length! :whistle: "

For the Board connections, i found these insolated ribbon cable.

3M - 3517-40 - RIBBON CABLE, 40WAY, PER M (PVC Polyvinyl Chloride Jacket) (Farnell Order Code: 8608636)

post-8517-0-05967100-1319884355_thumb.jp

post-8517-0-78996100-1319884369_thumb.jp

post-8517-0-28916400-1319884380_thumb.jp

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