how to make D.I.Y. daisy chains...

[voodoosoup]

guys gumawa ako kanina ng D.I.Y. daisy chain to power 3 pedals. used a universal adaptor for the power supply unit. the problem is i'm getting a lot of buzzing and humming from it. is this because the power supply i'm using doesn't pack enough ma? kulang ba ang 300ma for three pedals?or is it something else?used the cheaper denio peds as guinea pigs just to be safe.a little help please...

[akosimic]

your power supply is most likely to be unregulated.

btw, mind sharing how you made your dc chain? 

[ubersam]

Or, baka nagkaroon nang ground-loop somewhere.

[voodoosoup]

your power supply is most likely to be unregulated.

btw, mind sharing how you made your dc chain? 

got a pack of crown plugs from ace hardware and a meter or so of wire.set it up in series,that's about it. might be a noobish attempt but saw no harm in trying.any suggestions on how to regulate it?

[chito_eoi]

any suggestions on how to regulate it?

one word...
GOOGLE!

[voodoosoup]

well here's what it looks like.everything's fresh.as in ngayon lang ginawa lahat. kaya wag kayong aasa ng pulido haha.first attempt ko din gumawa ng daisy chain at "pedal board" if you can call it that.


suggestions please.

[ubersam]

...set it up in series,that's about it...

That might be your problem right there. In series, you are dividing the voltage between three loads (in ohms). Lets pretend that each device (efx pedal) presents a 10K ohm load to the 9 volt supply, this would mean that each device is receiving only 3 volts. What you want to do is wire your daisy chain in parallel so that each device receives 9 volts.

As for voltage regulation, google LM317

[voodoosoup]

thanks man. i tried wiring it parallel. the buzz is still there.

[erniebong]

thanks man. i tried wiring it parallel. the buzz is still there.

regulate mo na ps mo, kung seryus na ground loop yan putulin mo lahat ng ground connection ng patch cables in between pedals, yung ground nalng ng ps ang pagkukunan nilang lahat.

[voodoosoup]

sige maraming salamat sa inyo. i'll start working on the voltage regulator. post ko how it turns out mamaya. tanong lang may thread na bang ganito tungkol sa dc chains na pwede gawing reference?