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Industrial-strength LVI

Posted: Sun Nov 10, 2019 8:13 pm
by MrTamkis
A while ago, my DIY Line Voltage Inducer (LVI) for my DreamPi broke yet again, and instead of digging out the soldering iron and repairing it for the upteenth time, I decided to overhaul the design. (The ends of the fragile RJ11 cord pins must have gotten strained, and the solder broke loose on the RJ11 pins. Tiny, stripped 24 AWG gauge wire inside RJ11 cable is a complete pain to deal with and to solder down tightly, especially since it's tiny stranded wire, not solid-core.)


My original LVI

Instead, I replaced it with a DIY, industrial-strength, solderless LVI, which I'm showing off today. For those who want to create their own DIY LVI, who don't have the ability to solder, or who just struggle dealing with stripped RJ11 wire like me, this is probably the best design out there. And it fits into a fancy case to boot!

It uses 2 RJ11 wall plates (which attach the RJ11 pins to user-friendly spade terminals and screws on its keystone), solid-core copper jumper wires stripped and crimped with spade terminals, and a mini-breadboard for the LVI circuity itself. Everything fits into a small metal tin, which can easily be found for cheap at craft stores. Holes were Dremeled out to fit the RJ11 wall plate keystones, wall plate screw holes were drilled out to the top/bottom, and the plates were tightened down to the top/bottom of the tin with short screws and nuts/washers. The black, green, and yellow pins between the RJ11 wall plates were just jumped (direct connection), while the red pin was jumped over to a small breadboard. That mini breadboard has the LVI circuity for applying the voltage, and is attached to the bottom of the case with the adhesive tape on the bottom of the breadboard. Total cost was ~<$15 USD, and the circuit implemented is just the simple LVI from online-consoles website.








I'm also curious to see other member's LVIs :).

Re: Industrial-strength LVI

Posted: Wed Dec 18, 2019 3:17 pm
by MrTamkis
Not to double-post/bump, but I finally finished this industrial-strength LVI, with a proper, dedicated mini-breadboard for the unit :). The case finally closes now and the unit a self-contained, portable, solidly-built DIY LVI. (Pics and description updated in OP.)

Re: Industrial-strength LVI

Posted: Thu Dec 19, 2019 12:50 am
by mstar
Thats looking really good and the use of wall plates is a good idea!

Can you add a picture that shows the outside?

Re: Industrial-strength LVI

Posted: Fri Dec 20, 2019 1:01 pm
by MrTamkis
Yep; added some pics of the outside and with a 9V battery to the OP.

Re: Industrial-strength LVI

Posted: Fri Dec 20, 2019 2:37 pm
by megavolt85
Industrial-strength LVI with battery inside :lol:
More like an amateur 's work

Re: Industrial-strength LVI

Posted: Fri Dec 20, 2019 3:02 pm
by allbushnopush
No reason to be mean @megavolt85. The guy is just posting his homemade LVI. Obviously there are better methods than 9v battery. There is no reason to insult him.

Re: Industrial-strength LVI

Posted: Fri Dec 20, 2019 4:17 pm
by megavolt85
I only pointed out the mismatch between the title of the topic and its content
I don 't understand where you saw the insult