I made my own LED strobes. I modified a circuit for flashing lighthouse to
get the desired pulses and duration
basically its a 555 timer running a decade step counter to give you ten
possible "ON" positions for the strobes
then tapped off that on say pin 1 and 3 which gives you a nice quick double
pulse and and about 4 seconds off
time. this can be adjusted by the resistor on the 555 timer. This the drives
the LED strobe head which consists
of a 3x3 array of 280,000 mcd leds which makes it about the same size as
typical strobe, but you could make
it any shape you want just by moving the LED's around. The LED's are running
on 12v but they are set up in series. Its took a little bit of fiddling but
after 2 test runs I got the resistance correct and they ran for 2 months
on a car battery before the battery went flat. As for brightness, I would
say they are equally as bright as a
comercial strobe unit. given the slight overdiving of the leds they should
be around 3000 candle power per pulse.
they are easily visible in full sun enough to not be desirable to look at.
craig
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of Rick Sivier
Sent: Friday, 20 February 2009 2:25 AM
Subject: RE: Europa-List: LED LANDING LIGHTS
<rick.sivier@btinternet.com>
I'm sure that I saw something in a magazine a little while ago about LED
strobes. Has anyone had any direct experience of these? Can they be as
bright as a normal strobe?
Thanks
Rick
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Frans Veldman
Sent: 19 February 2009 11:26
Subject: Re: Europa-List: LED LANDING LIGHTS
craig bastin wrote:
> are you sure your lights are LED, in theory LED should offer nil EM
> interference. Maybe HID???
LED's use a much lower voltage than 12 volts. If I were to build a
powerfull LED system, I would use a switching power supply to avoid
converting to much voltage into heat. Switching power supplies are
notorious for their ability to generate EM interference.
--
Frans Veldman
Checked by AVG - www.avg.com
20:55:00
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