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I'm not sure how to wire an input that will accept a wall-wart
Hello,
Many wall warts that are not regulated have a lot of ripple riding on the DC anyway and could easily introduce a lot of annoying hum into the audio. A regulated wall wart may work or you could use a regular wall wart and build a regulator circuit yourself, which isnt too hard to do these days if you can work with small electronic components and can solder.
Yeah I have a voltage regulator schematic around here somewhere. I'll most likely just try the regulated wall-wart straight first though because there is only so much space in my pedal box : P. Thanks though!
If you made it, I would think you would know how to power it. Why is it using so much power?I built a ring modulator pedal
You can add a big 4700uF capacitor to the DC power to reduce hum.
Yes but you need to determine the power requierments first.In parallel across the two wires?
With two 9 volt batterys thay can be setup three ways. AndyDoes it need +9 and -9 supplys for opamps or 18 volts or just 9 volts?
If you made it, I would think you would know how to power it. Why is it using so much power?
Does it need +9 and -9 supplys for opamps or 18 volts or just 9 volts? How are the batterys wired? Andy
its the ring modulator kit from paia.com. I would send the schematic and the circuit board layout but I don't know if I can due to copyrights : /
Defenitly dual supply. Do you have the book for this kit? You can try and make an AC adapter but you will need a wallwart with a 18Volt AC output. I have seen + and - supplys as well. AndySee chapter five of the EPFM book for battery power examples; pages 210-212 for dc adapter and single to dual supply examples. Below is a sketch of the way two nine-volts are wired for the dual-dc supplies.