MOSFET momentary tail switch idea

[willie]

Mosfet remote tail cap switch.
Been there, done that and have the T-Shirt.

I made these awhile back and they were for positive ground as PT54 as all other PT emitters. My tailcap either switch or tape activated were powered by a CR2016 coin cell. My PT120 thd fet was installed inside of the heatsink so I could access the negative pole and the coin cell was not needed. You can search CPF for a switch called a “FETtie”. I too am electronicly challenged but was able to reverse engineer his design into a spring loaded switch circuit board with a PETE plastic housing and a hot glue gun. For conventional negative ground switch a reverse mosfet from what I used maybe needed. More info is in a post on exact mosfet used.

What do you hunters look for in a light?

I made the housing from PETE plastic on a lathe. The componets were IRLB3034 fet,CR2016,small resistor & tape switch. Used a TO220 sized fet rated at 30A+. Used the same setup on my PT120 sans battery,easy access to positive and negative current. Did away with mag switch and enclosed Fet inside solid copper heatsink activated by small switch at original mag switch position. ALL of the above lights were positive ground using PT emitters. Someone on CPF at one time sold the “Fetie” switch for con…

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TR1200 PT54 RED Aspheric Build

This flashlight was built for weapon mount, long range use. It features solid copper heat sink, Ebay seller DTR-LPF PT54 red led, Optolife 50mm Aspheric lens, Direct Drive 4/3AF (18650 size) NiMH batteries, 18GA Teflon wire and a MF $13 TR-1200 HOST W/Ebay extension. Wire tape switch (too much resistance) will have to be reworked probably MOSFET switched. Using standard switch or copper penny . Running 3 cells was able to pull 12A. A bit high but this a short run time light. All copper parts …