New Invention - DC Protection Module
Posted: Mon Sep 24, 2018 3:47 am
Hey all. Thought I'd make a post here in case anyone was interested. I've made some panels of a protection circuit I designed from scratch after a few years of trying stuff out.. 10 or more PCB/schematic versions.. It might be the first of its kind.. if not, please let me know!
It's in the form of a tiny PCB that attaches to a DC jack and auto-disconnects when too much voltage is connected, or the wrong polarity.
Instantly with no heat, unlike a polyfuse.
Also with around 0.1 Ohms series resistance. The lowest I could get a PTC was 5ohms - interesting fact.. some datasheets state lower, but this is if the PTC is socketed. The reflow process causes an irreversible change..
Going to send the first ones out with a minimum quantity of 40pcs in a V-cut PCB panel @ 59usd shipped anywhere - more for tracking..
You can find a video and pictures of it here https://www.instagram.com/p/BoGaK7nlrA8/
It's in the form of a tiny PCB that attaches to a DC jack and auto-disconnects when too much voltage is connected, or the wrong polarity.
Instantly with no heat, unlike a polyfuse.
Also with around 0.1 Ohms series resistance. The lowest I could get a PTC was 5ohms - interesting fact.. some datasheets state lower, but this is if the PTC is socketed. The reflow process causes an irreversible change..
Going to send the first ones out with a minimum quantity of 40pcs in a V-cut PCB panel @ 59usd shipped anywhere - more for tracking..
You can find a video and pictures of it here https://www.instagram.com/p/BoGaK7nlrA8/
