![]() The datasheet ripple is probably at the maximum current draw of 340 mA, and is likely ten times lower at the currents I will be using (a few mA per op-amp.) Typical ripple is 60 mV, and max ripple is 1% of the DC voltage, which is 150 mV in this case. Like the speaker / cab emulation filter that's been on my mind lately.Ĭlick to expand.Digikey is good about providing links to product datasheets. The old 9V DC standard is really not quite enough voltage, as witnessed by several "boutique" pedals that have internal charge-pump circuitry to raise that to 18 volts.īetter to go all the way to 30 volts, and then you finally have a little headroom when building a circuit that is not supposed to clip. It would have been nice if the guitar FX pedal industry had switched to +/- 15V DC power by now. So the plan is to build one of those into a box, with a little extra RC filtering, and then use it to power multiple op-amp based guitar projects, in the same way I use a single 9V power supply to run several of my store-bought guitar pedals. Only five pins to deal with, two wired to AC mains, and the other three spit out regulated +/- 15V DC at up to 340 mA, for under $12 USD. How can you beat that? Small, cheap, light, super simple. Then, quite recently I found this at Digikey: Anyone have any suggestions for a suitable connector pair?Ĭlick to expand.That was one of the options I had been thinking about. So I have had some trouble finding anything I really liked. I think these are usable, but the plug is awkwardly long. Surely there is a less expensive alternative? I did find these ( ), but nearly $14 Canadian per connector is a bit much. Oh yeah, if at all possible, it should be available at Digikey or Mouser.īasically, I'm looking for a 3-pin replacement for the everyday 5.5mm "barrel jack" and "barrel plug" connectors we find on most of our contemporary small power supplies and the products they plug into. To power these, I would like to find a suitable power connector that has (at least) three pins, is reasonably small and compact, can carry a reasonable amount of current - say 100 mA DC minimum - and which electrically isolates all three pins from whatever metal box the connector is mounted to. I'd like to build these into little die-cast boxes of the sort used for guitar FX pedals. We take our customer satisfaction very seriously!įollow us on facebook to keep up with new offerings and news from the studio.I am planning some op-amp based projects that need both positive and negative supply rails, the usual 0V, +15V, -15V. Many issues can be solved quickly and efficiently with quick correspondence. If your product arrives not as described in our listing for any reason, please reach out to us directly so we can resolve this issue promptly. Sometimes things happen beyond our control during shipping. Tone House Studios has new Guitar and Recording Studio gear being added every week!!īe sure to check out our world-class recording facility located in Long Island, NY.Īll our Gear is tested before being shipped. **FREE SHIPPING WITHIN THE UNITED STATES** The item pictured is the one you will be receiving. Item will be professionally packed, shipped and insured to guarantee safe arrival
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