[cctalk] Re: mains stroboscope / was Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

[Paul Koning via cctalk]

> On Nov 8, 2024, at 9:48 AM, ben via cctalk <cctalk@classiccmp.org> wrote:
> 
> On 2024-11-06 12:28 p.m., Brent Hilpert via cctalk wrote:
>> The old common standard for a mains stroboscope was a neon bulb (+resistor).
>> They are still widely available, simple and inexpensive.
>> No, they are not very bright and need some shading or otherwise reduced 
>> ambient light, but for a tool of infrequent use...
> If it works why change it?
> Don't modern leds use a still glow after being turned off?
> Ben.

White ones do because the white comes from phosphors, excited by blue LEDs.  
But plain LEDs (no phosphor) such as red or green ones have very short 
persistence and should serve nicely as strobe lights.

        paul