[SOLVED] Dual 5V output from one 5V input circuit design, help.

[Audioguru]

The spec's for the 5V/1A module says with 10uF and 0.1uF output capacitors it has low ripple and noise.

 

[BradtheRad]

Here's a strategy for reducing noise to sensitive circuitry...
Isolate it via resistor. Add filter capacitor nearby.
It should allow using a single 5V power supply.

 

[Rickooo]

The AC/DC described in post #1 has 5W output, why does it appear as 10W converter in the schematic? If you think about changing the converter, why not a dual output AC/DC module?

Dual output in HiLink SMPS is not available. As HiLink is best in India. I am heading towards using polyfuse and filter circuit as everyone suggested.

--- Updated Sep 18, 2020 ---

As, there is no switching frequency written on the datasheet of HiLink SMPS which I am using 220V AC to 5V 10W. So, I have decided to use 10uF and 0.1uF as suggested above as a filter.
Now, I am bit unsure about PTC. Well, I found one, which is **broken link removed** holding current 900mA and trip current is 1.8A 60V fuse. I didn't found one with 5V. Is it fine?

 

[KlausST]

Hi,

holding current 900mA and trip current is 1.8A 60V fuse. I didn't found one with 5V. Is it fine?

You need to look at the series resistance.
resistance x current = voltage drop
decie if the voltage drop is not too high.

Klaus

 

[Rickooo]

What do you think about this?

 

[BradtheRad]

I think your latest schematic is shaping up into a workable concept.

 

[KlausST]

Hi,

The cold fuse is low ohmic, thus there is not much series impedance to block high frequency.
I'd add a series impedance.
If voltage drop is O.K. then a simple resistor, otherwise an inductor.

Klaus