Drill Flashlight

I have a green laser pointer that uses 3AAA batteries, I want to run it on a 4.5 adapter, will it work?

The battery compartment negative faces laser end, positive toward back end spring. If I remove spring, drill hole, install input plug ( negative to tip, positive to frame) soldier wires from battery pack to input plug, insert plug from 1.5 to 12V adapter, set at 4.5V, will it work? It also has a red and white flashlight which comes on with left or right twist at front, but all power provided from rear battery pack. Laser is rated as 5mW, DC adapter says maximum is 300mA will it work??? if so, how to do it correctly? This laser is being used on a 16" Dob Telescope as a finder and eats 3AAA batteries in 1/2 hour. Laser has a one minute on cycle, repress button for another minute, etc. 30 minutes, batteries drained for laser, but flashlights still operate. I think when batteries reach 4.0V, laser is non functional? Thanks, Vance

It will typically work on adapters that have good voltage regulation. Cheap dumb adapters have high voltage at low load and normal voltage at rated load. A dumb 300mA adapter could give 4.5V at full load but 5V or higher when load is only 150mA or less. A cheap adapter with poor voltage regulation could fry your laser pointer.

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Drill Flashlight

Discs Wheels
What do compact discs spin around fast when you are listening to a CD or watching a DVD movie?
Why do those round discs(CDs,DVD,computer discs) spin fast when they are being listened to or if I were put a CD in a CD player(that has a little glass window so you can see the CD spinning while the music is playing)why would my music CD need to spin,what is the reason for that(no I am not referring to the wheel from the show Wheel Of Fortune)

Its because the sensor that reads the disc is on the edge of it, and the centrifugal force of the spinning movement throws all the stored information to the edge. Once it stops, it [...] Continue Reading...

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