Re: LED at 60 HZ? (was RE: Radio Shack Strobes)

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Original poster: robert & june heidlebaugh <rheidlebaugh-at-desertgate-dot-com> 

Use a series diode to prevent reverse current on AC.
    Robert  H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Tue, 24 Feb 2004 13:10:53 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: LED at 60 HZ? (was RE: Radio Shack Strobes)
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Tue, 24 Feb 2004 13:17:12 -0700
 >
 > Original poster: "Daniel Kline" <daniel_kline-at-med.unc.edu>
 >
 > An engineering friend says a high-brightness LED on a
 > low-voltage transformer, like 6 Volts, connected through
 > a suitable resistance, should flash at 60Hz in sync with
 > the 60Hz mains. (50Hz for you all over there :)
 > It seems too easy to me...he thinks that the LED may have
 > a "persistence" issue. In other words, just because it
 > turns off quickly doesn't mean it stops emitting quickly.
 > Comments?
 > Thanks,
 > Dan K
 >
 >