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Old 9th September 2002, 01:15 AM   #1
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Default Blue LED for BOSOZ, how to implement?

I am just about finished with my BOSOZ but I would like to have a blue LED on the front panel.

Should I take a feed off of the power supply rails to the LED? If so should I use a resistor in front of the LED?

Thanks for any info.


Y.
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Old 9th September 2002, 02:02 AM   #2
fcel is offline fcel  United States
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Those blue led gets very bright. I suggest to start with a 200K resistor in front of the led. I remember someone on this forum install two leds - one on each rail - just so that it "looks balanced electrically".
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Old 9th September 2002, 02:11 AM   #3
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fcel, thanks for replying. Do I connect the LED directly to the power supply rail?


Thanks.



Y.
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Old 9th September 2002, 02:36 AM   #4
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If you want it to be balanced electrically, connect it across the +ve and -ve rails (instead of +ve to gnd) and double the resistance.
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Old 9th September 2002, 02:40 AM   #5
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If you want to do it really well , put some extra turns of thin wire on your toroid and conect LED there with a small resistor.
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Old 9th September 2002, 04:30 AM   #6
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Waoowww...!

It's a fantasitc idea. Clap! Clap! Clap!

JH
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Old 9th September 2002, 05:35 AM   #7
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Yochim

I like the way as in the figure.
You could install LEDs of as many as number of diode bridges.
You could make them by easy p2p wiring.

JH
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File Type: jpg led.jpg (8.3 KB, 1763 views)
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Old 9th September 2002, 08:17 AM   #8
skaara is offline skaara  Slovenia
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You dont even need a bridge for led
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Old 9th September 2002, 09:08 AM   #9
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You may protect the led with 4 1n4004 series across its pins.
This metod limits the voltage at 2.5 volts or so.
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Old 9th September 2002, 09:42 AM   #10
skaara is offline skaara  Slovenia
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But diodes will get hot, especially at that voltage?!
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