Only one LED per segment is on. They are arranged in a matrix -- keeps the pin count down to a dull roar.
http://www.instructables.com/id/LED-Dot-Matrix-Display/ http://www.electronics-lab.com/projects/misc/013/index.html DaveH > -----Original Message----- > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Ryan Szekeres > Sent: Tuesday, September 18, 2012 12:55 > To: Tom Miller; Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] Hi Power LED Light power supply... > > On Tue, Sep 18, 2012 at 2:46 PM, Tom Miller > <tmil...@skylinenet.net> wrote: > > That's because the signs are scanned/multiplexed displays. > It is not 60/120 > > Hz flicker. > > > > Tom > > > > Something new to research. Thanks! > > -- > Ryan Szekeres > KB9TQN > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
