wire - Delphijustin industries https://delphijustin.biz Making use out of things! Fri, 08 Dec 2023 20:01:41 +0000 en-US hourly 1 https://wordpress.org/?v=6.2.9 https://delphijustin.biz/wp-content/uploads/2025/10/cropped-dongwa-192-32x32.png wire - Delphijustin industries https://delphijustin.biz 32 32 Resistor RJ45 Tester https://delphijustin.biz/resistor-rj45-tester/?utm_source=rss&utm_medium=rss&utm_campaign=resistor-rj45-tester https://delphijustin.biz/resistor-rj45-tester/#respond Fri, 08 Dec 2023 20:01:40 +0000 https://delphijustin.biz/?p=4880 This is a simple network cord tester that uses just 8 unique resistors. The values/wattage doesn’t matter as long as the meter can read them. They should be in the kiloohm range. I have made an Excel spreadsheet file that you can enter all 8 of the resistors and get the total parallel resistance. The …

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]]> This is a simple network cord tester that uses just 8 unique resistors. The values/wattage doesn’t matter as long as the meter can read them. They should be in the kiloohm range. I have made an Excel spreadsheet file that you can enter all 8 of the resistors and get the total parallel resistance. The pins are listed as binary 1s and 0s. J1 and J2 are the RJ45 connectors. I even entered the ones I’m using. It doesn’t tell you if it’s a patch cord, crossover or rollover, but tells you if the pins used on the cord are making connection. To tell what type of cord it is just look at the 2 ends.

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]]> https://delphijustin.biz/resistor-rj45-tester/feed/ 0 Simplest Wire Tracer/Coax Tester https://delphijustin.biz/simplest-wire-tracer-coax-tester/?utm_source=rss&utm_medium=rss&utm_campaign=simplest-wire-tracer-coax-tester https://delphijustin.biz/simplest-wire-tracer-coax-tester/#respond Thu, 09 Nov 2023 02:00:49 +0000 https://delphijustin.biz/?p=4794 This is a simple wire tester all you need is a 12-1000vac non-contact voltage detector. The ideal is to connect AC live wire to the red circle is. You do not use ground or neutral wires, these wires should be cut off. If the cord is shielded(coax) the detector doesn’t. Even though there’s only one …

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This is a simple wire tester all you need is a 12-1000vac non-contact voltage detector. The ideal is to connect AC live wire to the red circle is. You do not use ground or neutral wires, these wires should be cut off. If the cord is shielded(coax) the detector doesn’t. Even though there’s only one wire used you should not touch the wire. The 5v is actually the ac mains voltage. The three switches choose 1 out of 8 outputs to connect the ac live wire to.

Whats needed

  • 1x spdt switch
  • 1x dpdt switch
  • 1x 4pdt switch
  • 1x RJ45 Jack
  • 1x Polarized ac power cord
  • a project box that is big enough to fit everything
  • MultiMeter
  • screwdriver
  • drill
  1. drill holes in the box for wires and switches
  2. connect all switches as shown in the picture at the top. NOTE THAT THE LAST SWITCH OUTPUTS GO TO THE RJ45 JACK
  3. Next set your multimeter to lowest resistance range and check for continuity between live wire pin and rj45 connector. this will help find the correct pinout on the switches

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