Too high too low

Parts Questions
1

Hi!

I just got hold of some switching PSU. Got it to work, buy putting  a Led and a resistor on the 5 V and some laps on the 12 V.

The only problem is the 5 volt output gives me 5,35. Stupid. Do you think this will drop when it gets more load? 5.35 is not enough to run it trough the 7805 but I guess too much to go directly to the core. Since the same psu has quite a bit of ripple to, I was wondering if anyone has found (and tested) a replacement for the Fortron psu mentioned in the Switching pdf?

Sorry for all my psu posts

Thank you

Nikolai

2

Hi,

Even if voltage doesn’t drop with more load on PSU - I’d say 5,35 is still ok for powering Midibox: PIC is rated for MAX 5,5v and HC logic for MAX 6V supply voltages.

I hope that PS bypass cap helps to fight ripple issues..

Bye, Moebius