Mnyb wrote: > Yes . But the thing when he designed this was the primary inductance > "L1" a chunky 10mH thing this makes it a LC filtered supply on the > primary side before the regulator . The supply is not as dirty to the > network as many others . > > Wonder if his write up on the design idea is still on this forum ? > > Suppose the Touch has a bunch of internal switchers and regulators > anyway . > > Point of the exercise is that it's nothing magical with power supplies . > A linear supply can also be dirty to the network just as switch modes > can . This design fixes some of that but the 5 V side could probably > have even better regulators if one wants to make it a project of some > kind . > > If it's good enough it's ok regardless of topology switch mode or linear > . > > This design is not super expensive . If I got it rigth ?
I looked at the schematic, and was surprised to see it seemed like almost a textbook linear PS. I think, as you noted, the main difference is he does some filtering around the main transformer/rectifier bridge to clean-up the voltage presented to the regulator IC. ------------------------------------------------------------------------ tcutting's Profile: http://forums.slimdevices.com/member.php?userid=17402 View this thread: http://forums.slimdevices.com/showthread.php?t=82648 _______________________________________________ Touch mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/touch
