6 Jun
2008
6 Jun
'08
2:41 p.m.
Jerry, for convenience, how about one of those small house-current continuity testers? They typically have a neon bulb, and a lamp cord coud be spliced onto the contact leads. These testers usually cost only a dollar or two. On Thu, Jun 5, 2008 at 4:18 PM, Jerry Foote <jfoote@scopecraft.com> wrote:
A pen light would give a continuous spectrum (actually a black body distribution) and not show calibration lines. A good source for calibration lines is a neon bulb running on AC current as might be found on many kitchen appliances to indicate that they are on.