High Current Switch / Nylon Cord Cutter



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High Current Switch / Nylon Cord Cutter

This module takes a logic level voltage input and uses it to switch a high current circuit. It was designed to switch a small 4-cell AA or NiCd battery pack to heat up a nichrome wire that would cut through a nylon or polyester cord to separate a payload from a weather balloon.

Key Features

Switch up to 25 volts, and 10 amps.
Control voltage input ranges from 3.3 to 20 volts.
Screw terminals for high current source (battery pack) and nichrome wire (or other load).
Control input designed to mate with ZLog-7 port J11 (requires firmware 1.4 running on ZLog-7 for altitude triggered control).
1.35" x 0.8" x 0.5" (34 mm x 20 mm x 12 mm).
4 grams.
Includes 1 meter nichrome wire. Recommended nichrome loop length of 2.3" (6 cm) works well with 4-cell NiCd pack or 2S Lipo pack.

FET Switch installed on ZLog-7

Demo Video