Guitar Isolated Power Supply Schematic

A power supply project with 4 isolated outputs from scott swartz.

Guitar isolated power supply schematic.

This board works for 115v and 230v ac inputs based on the transformer selection. I ve been a bit put off by the thought of needing a transformer with multiple secondaries so was wondering about using a single master dc supply with a higher voltage than 9v and then using isolated dc dc converters to provide the separate 9v feeds to the stompboxes. I ve been looking around for ideas for a diy power supply for stompboxes and found a couple of older threads on this forum. The schematic uses a simple power supply circuit converting ac to pulsating dc smoothing it with capacitors and running it through voltage regulators for fixed dc outputs.

Circuits for each secondary are independent from each other so dc outputs coming from different branches will be isolated. Guitar pedal power supply 10 isolated dc output for 9v 12v 18v 100ma 300ma 500ma effect pedal with usb port for charging mobile phone tablet short circuit and over current protection cp 04 4 5 out of 5 stars 227. The outputs are fully isolated and extremely quiet and accommodate a variety of voltage and current requirements two 9v outputs at 100ma two 9v outputs at 300ma two 9v outputs at 450ma two 18v outputs at 250ma and in one particularly cool feature two 6 15v variable voltage. Ss ps4 power supply bill of materials text file.

For example if you don t have any 5v pedals you can just swap the 5v power regulator for a 9v regulator and now you ll have double the 9v power. It s easy to adapt this circuit for any voltage you may need but keep in mind that each 78xx regulator needs at least 2v extra voltage at the input to get the desired output voltage e g. Guitar pedal power supply high current 8 isolated dc output for 300ma 500ma 9v 12v 15v 18v effect pedal with adjustable voltage short circuit and over current protection cp 202 36w 4 3 out of 5 stars 60. I have shortened the name to ss ps4 in some cases.

There are options to choose what voltages the outputs are to be. 7809 needs at least 11vdc at the.