Strobe Lights - 1 Cell
Description:
a.. Fitted with daylight switch providing longer battery life.
b.. Long Lasting Xenon Flash Tube.
c.. Waterproof to 10 metres.
d.. 1.5 seconds per flash.
e.. 4km visibility.
f.. Weight without battery: 100 grams.
g.. Battery Life: One Alkaline D cell 20 days approx.
Code General Description Length Dia Unit $USD $AUD(i)
LTB200 DYX-1 Strobe 137mm 51mm EACH $30.80 $44.00
LTB203 DYX-1B Strobe 137mm 51mm EACH $30.80 $44.00
LTB200
LTB203
Strobe Lights - 2 Cell
Description:
a.. Fitted with daylight switch providing longer battery life.
b.. Long Lasting Xenon Flash Tube.
c.. Resin filled lens for longer life.
d.. Waterproof to 30 metres.
e.. 2.5 seconds per flash.
f.. 6km visibility.
g.. Battery: Two Alkaline D cell.
h.. Battery Life: 30 days approx.
Code General Description Length Dia Weight Unit $USD $AUD(i)
LTB221 DYX-285 Strobe 260mm 56mm 280g EACH $53.52 $76.50
LTB221
----- Original Message -----
From: "John Giddy" <[EMAIL PROTECTED]>
To: "Discussion of issues relating to Soaring in Australia."
<[email protected]>
Sent: Thursday, July 07, 2005 8:00 PM Subject: Re: [Aus-soaring] superbright LEDs
On Thu, 07 Jul 2005 18:44:55 +1000, you wrote:At 07:36 PM 6/07/05 +0930, you wrote:On Wed, 06 Jul 2005 16:25:29 +1000, Mike Borgelt wrote:A 20 watt light is hardly stunning, particularly against a glare background on a bright sunny day when the recipient is wearing dark glasses.I'm looking forward to seeing the Eckey ASH in its lightshow mode. Superbright LED lamps at 4W generate equal light output of 20W halogen dichroic. Their AC inverter is inbuilt in the lamp.Since when did LED's need AC inverters?LEDs are best driven with constant current. The most efficient way (lowest battery drain) to do this is to use a switching regulator. there are several ICs specifically intended for this application, which use just a small inductor (the frequency is quite high) a couple of capacitors and a resistor or two to give constant current through the string of LEDs over a wide range of input voltage. John G. _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit:http://lists.internode.on.net/mailman/listinfo/aus-soaring
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_______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
