Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Recent content by litterbox99

  1. litterbox99

    Siemens LGR 7641 specs

    Siemens LGR 7641 tube specs. A few years ago I purchased a HeNe tube & power supply kit. It came with a Siemens 7641 tube, un-marked power brick (3 1/4 x 1 1/4 x 3/4) and three 20k 3W metal oxide ballast resistors. I powered it with a variable power supply (YH-305D) @ 12 vdc This set up has...
See more




Top