Re: Internal power supply and PSU mod
Posted: Mar 11th, '17, 05:19
By the way my connections are done on the solder side of the board like in your pics.
Enter the world of easy DIY
http://www.e-licktronic.com/forum/
I read the full article now.. sorry for the question.. solved it by myselfflinte413 wrote:So this one is ok for me? It has 230V to 2x 15V 15VA 0.5A
Living in germany.
https://www.conrad.de/de/ringkerntransf ... 09884.html
That was my experience as well, internal was noisier. It's a big magnet after all..LulaNord wrote:Hi...i am a new user here. As per my knowledge the y scale is negative dB. For instance you can see a noise peak at 50Hz in both cases.
The external power supply produces a peak of about -86dB at 50Hz.The internal power supply produces a peak of about -75dB at 50Hz, which is about 10dB higher than the external power supply.Similarly, there is a second noise peak at 150Hz that is quite higher (about 8dB) with the internal toroidal transformer than with a basic external ac supply.
You must not have done it correctly.Altitude wrote:That was my experience as well, internal was noisier. It's a big magnet after all..LulaNord wrote:Hi...i am a new user here. As per my knowledge the y scale is negative dB. For instance you can see a noise peak at 50Hz in both cases.
The external power supply produces a peak of about -86dB at 50Hz.The internal power supply produces a peak of about -75dB at 50Hz, which is about 10dB higher than the external power supply.Similarly, there is a second noise peak at 150Hz that is quite higher (about 8dB) with the internal toroidal transformer than with a basic external ac supply.