Re: Multi Coloured LED 120v help


"steve" <stevesemple@xxxxxxxxx> schreef in bericht
news:1153183183.635593.61180@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

redbelly wrote:
steve wrote:
On many occations I have used the following circuit to tell me when I
have left light swiches on.

(snip)

In addition to the others' suggestions, I would test the LED with a 9V
battery and appropriate resistor. First convince yourself that the LED
works correctly with a simple DC source before playing around with
rectifiers and such.

Mark
After I wired it up as in my first diagram I tested the led to see if
it still works after connecting to the 120. I tested it with a batery
and it works fine. So my circuit has not burned the led it just doenst
change colours as it is suppose to.

Regards


So you're not talking about a LED but about an IC that contains three LEDs
and some other electronics. This type of circuits tend to have type number
and specifications described in a data ***. It should help if you could
tell something about it.

Even if you can't tell something about the part, it apparently works with a
battery. What battery and what series resistor did you use? Do you have a
multimeter so you can tell something about voltages acros battery, resistor
and LED? If you don't have such an instrument you'd better buy one that's to
say if you want to do something with electronics. A simple one costs around
?10,--. Good enough for a beginner.

The circuit below may work but I can't be sure due to lack of information.
Beware! Circuits directly connected to the mains are always dangerous.

100k/.5W bridge
___ rectifier
----|___|--+ .-----.
+-| ~/ |---------+-------+
120Vac +--| / = |--+ | |
| '-----' | | .-.
----------+ | | | |1k
| | + | |
| ### '-'
| --- |
| |100uF | LED
| | V circuit
| | -
| | |
+------+-------+
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

petrus bitbyter



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