Wounded Paw
New Member
This is for a guitar effects mixing/switching box.
Currently using a Meanwell DCW03A-12 encapsulated power supply which supplies -12V/12V, 125mA on each rail, from 9 to 18V DC input which is common for guitar effects pedals adaptors.
Then using 2 x 1N4001 diodes in series to drop each rail to under 11V. The reason for this is that I need a negative voltage more than 1 volt higher than the rails for analog JFET switching using J112's.
This set up currently works well as the Meanwell power supply has very constant voltage but I realize using the diodes is not really the way to go.
Should I try instead using LM317/LM337 adjustable regulators or 7810/7910 fixed regulators to get my rails to a lower voltage than the 12V supplied? The dropout voltage of the regulators may be a problem.
Is there a better way to go while keeping the current consumption to a minimum?
Currently using a Meanwell DCW03A-12 encapsulated power supply which supplies -12V/12V, 125mA on each rail, from 9 to 18V DC input which is common for guitar effects pedals adaptors.
Then using 2 x 1N4001 diodes in series to drop each rail to under 11V. The reason for this is that I need a negative voltage more than 1 volt higher than the rails for analog JFET switching using J112's.
This set up currently works well as the Meanwell power supply has very constant voltage but I realize using the diodes is not really the way to go.
Should I try instead using LM317/LM337 adjustable regulators or 7810/7910 fixed regulators to get my rails to a lower voltage than the 12V supplied? The dropout voltage of the regulators may be a problem.
Is there a better way to go while keeping the current consumption to a minimum?