bananasiong
New Member
Bare in mind that the one you need is LM2940-5 as there are a few types of LM2940s with different output voltage.
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I thought he is using nokia charger?Gayan Soyza said:Now only we got another point that you don't have enough space to keep your transformer also.
mvadu said:I tried one thing.. I just connected a 7815 regulator to the Nokia charger, its output droped from 6.8V to 5.2V.. So the regulator IC is working as voltage dropper.. Do you think I can use this approch..
Due to space problems he is using Nokia charger to insert into the table Clock enclosure.bananasiong said:I thought he is using nokia charger?![]()
Gayan Soyza said:Now only we got another point that you don't have enough space to keep your transformer also.
Whats the progress in Pommies method the (zener diode).Did you try that?
Gayan Soyza said:Due to space problems he is using Nokia charger to insert into the table Clock enclosure.![]()
For MVADU
To work this circuit properly it needs 3W (onwards) LED’s. With some small 5mm ones cannot take the real effect to mix the colors. Because it was happened to me earlier by placing small LED’s. After that I shifted to bigger ones (5W ones).
For higher wattage LED’s it needs large current. In the original link he has used 3W 350mA LED’s.
So the Charger can or cannot supply the current required for the LED’s is a doubt.
If MVADU is satisfied then it’s OK.![]()
bananasiong said:Hi ericgibbs, what is the purpose of the npn transistor in your attachment?
Thanks