S.E.R.E. Light and IR Light

189

01:58:07

Two types of lights (one visible, and one Infrared) in a single package.  I was inspired to put this together when I saw a breakdown of a Military pilot's S.E.R.E. kit.  In it were two separate flashlights one visible and one infrared for signaling.

I felt would be better to put them both into a single package rather than two separate lights.  So I combined the two.  I also gave them the ability to strobe or be on continuously via switches.  Speed of the strobe is determined by the potentiometer at the top side of the schematic.

So the controls are two single pole double throw switches, and a knob for the potentiometer to determine strobe speed.  That's it.

I hope this will inspire others to make improvements of their own on this circuit and share with others.

published 6 years ago

wyoelk

6 years ago

Here's a few changes to help it be a bit more efficient. https://everycircuit.com/circuit/5825720771936256

BillyT

6 years ago

Good Idea, I remember the old lamps they had in the Daks, but they were wired to the A/Cs power.

Grimmy

6 years ago

@WyoElk, I definitely appreciate the feedback and suggestions. Originally, I tried to do this entirely without integrated circuits, using nothing but discrete components. But I was having a hell of a time getting the Colpitts oscillator to bootstrap at a reasonable frequency using a reasonably sized inductor. For some reason, I am not able to load a view of your changes. So I can't see the adjustments you made to resistor values. For the strobe, I was shooting for 1/1 sec to about 1/6 sec.

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