high voltage - Delphijustin industries https://delphijustin.biz Making use out of things! Thu, 09 Nov 2023 08:02:38 +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 high voltage - Delphijustin industries https://delphijustin.biz 32 32 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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]]> https://delphijustin.biz/simplest-wire-tracer-coax-tester/feed/ 0 Simple Plasma Speaker/HV Power Supply https://delphijustin.biz/simple-plasma-speaker-hv-power-supply/?utm_source=rss&utm_medium=rss&utm_campaign=simple-plasma-speaker-hv-power-supply https://delphijustin.biz/simple-plasma-speaker-hv-power-supply/#respond Thu, 12 Sep 2019 15:57:02 +0000 https://delphijustin.biz/?p=549 This circuit takes 3.7vdc and converts it to about 18kv. The transistor is used for the plasma speaker. It’s basically a Single-Ended Class A Audio Amplifier. The 500-ohm pot adjusts the voltage sent to the converter. The pot must NOT go over 500 ohms because then the voltage could be too high. The circuit is …

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]]> This circuit takes 3.7vdc and converts it to about 18kv. The transistor is used for the plasma speaker. It’s basically a Single-Ended Class A Audio Amplifier. The 500-ohm pot adjusts the voltage sent to the converter. The pot must NOT go over 500 ohms because then the voltage could be too high. The circuit is currently untested but to believe it may work. Also LM338 is used instead of LM317 because of the high current draw.

Keep a lookout for when I get it built and upload photos and a video. I thank flyback for reminding me about the inductive kickback voltage so I put a diode in reverse bias across the power inputs on the converter. The converter cat# is HVS-01 on allelectronics.com

YouTube video part one Total cost:$50.21

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