I have a high quality Swageman 16V LPS that I would like to convert (if possible) to a 5V output for use with either the LHY or PD Creative LPS upgrade for the Bluesound Node 2i. Is there a way of doing this easily? 2 options that I have researched - (1) a bucking conversion - I've seen multiple schematics from simple (a few resistors) to complex (diodes, additional filter caps etc.) or (2) what would seem easier - just purchase a new 5V transformer and replace in kind - but would this not work because of all the other ancillary components are spec'd to the current 19VA toroid.
I'm comfortable with an iron and multimeter, but not much beyond that, so any instructions keeping this in mind would be much appreciated. Thanks
I'm comfortable with an iron and multimeter, but not much beyond that, so any instructions keeping this in mind would be much appreciated. Thanks
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Might be possible, depending on how much current you need to draw at 5V? Do you have a circuit for the existing regulator?
Hi, first you need to draw a schematic. I think it is a Swagman LPS. Resolution of the pictures is too low. Replacing the transformer seems a must as heat will be too much regulating to 5V. The PSU seems LM723 based (I might be wrong, can't read the type number) which would be an excellent choice and it would be easy to change it to 5V. The 18V transformer windings are in parallel. If you change it please be wise and solder a Phoenix connector to the PCB to avoid PCB tracks peeling off. 18V indicates it is definitely not a LDO design so LM723 is a good bet.
However it is a complex and costly way of doing things as you'll need to replace the transformer. Implementing s switcher is not the brightest of choices when you want optimal results. Maybe it is better to sell it and build a new 5V PSU. Please note that even with the best linear PSU the Node never will be excellent as its strength is the software not the hardware.
However it is a complex and costly way of doing things as you'll need to replace the transformer. Implementing s switcher is not the brightest of choices when you want optimal results. Maybe it is better to sell it and build a new 5V PSU. Please note that even with the best linear PSU the Node never will be excellent as its strength is the software not the hardware.
What is your mains input voltage where you live, and can you provide better photos of these three things:
the wire connections to that mains input filter - how are the four colours connected?
The full label on the transformer , to show both the primary and secondary wiring colours and voltages
The output wiring connection to the regulator board - how are those four wires used?
IF your local AC supply is 110-120VAC, AND the primaries are wired in parallel - it just might be simple to rewire them in series to get 9VAC / c. 2A output from the transformer, efficiently ... which will make adjusting the output to +5Vdc much, much more feasible.
As others above - some closer & better photos will help a lot.
the wire connections to that mains input filter - how are the four colours connected?
The full label on the transformer , to show both the primary and secondary wiring colours and voltages
The output wiring connection to the regulator board - how are those four wires used?
IF your local AC supply is 110-120VAC, AND the primaries are wired in parallel - it just might be simple to rewire them in series to get 9VAC / c. 2A output from the transformer, efficiently ... which will make adjusting the output to +5Vdc much, much more feasible.
As others above - some closer & better photos will help a lot.