Okay, I've made my own sungun using a 14.4 cordless drill. Ripped out the motor and replaced it with a halogen downlight bulb. It works great (or at least it did until I dropped it. Don't know whether I've shorted the battery or something as replacing the bulb doesn't work). What happens is you squeeze the trigger and the bulb lights for as long as you keep the trigger squeezed. It's also a variable trigger so the intensity of the light increases as you squeeze the trigger. This works great except because I'm using a 50W bulb, the entire thing can get pretty hot.
What I envisage is adding in a PC mobo/CPU fan to the back of the drill but before the vents so it'll suck in cool air. The problem is do I add it in series or in parallel?
Now, it's been something like fifteen years since I did GCSE Electronics. From what I remember, adding in series means the voltage is divided between the bulb and fan and hence less current is drawn across each device, which would mean a dimmer bulb and underpowered fan. Or I could do it in parallel which means the voltage across each component is the same so they should both work equally well.
Or am I completely wrong?
