one power supply for all?

Design Concepts
1

Hi!

i have just began working on the sequencer and my second SID module.

since the sequencer and the 2 Sids will be mounted in the same rack, i was thinking about the possibility to build a single “power supply” module for all of them.

so i will build a single PCB in which i will mount a transformer, the diode rectifier, the 2200uF elcap, the 330nF, the 7809 (for the 2 SIDs), the 7805 (for the 2 cores), the 10uF elcap and finally the 100nF.

now the question: on the single core and module, can i avoid to mount all the caps and the 780x IC??

i will just take the 5V or 9V from my power supply module and connect this to the J2 jumper of the core and to the appropriate pins of the Sid.

2

on the single core and module, can i avoid to mount all the caps and the 780x IC??

.

Yeah you can leave this parts on the Modules BUT mount a second big cap and a second or third , thats enough

Don’t forget that if you use only one voltage regulator for all this one can get  very hot so don’t forget a passive cooling for it.

3

Yupp.

Just one thing: I tried the same with my SID setup. The noise (humming 50 Hz) was pretty loud. Consider using TK´s PSU recycle for the “power board”. It has much more than enough power to supply more than just a 4x SID.

Greetz!

4

do you mean the power supply of the C64?

5

yes!