Hi everyone,
I'm trying to design an EQ and want to have separate line in/out PCB's and separate PCB's for each frequency band. I have been trying to design a pretty straightforward ±15V PSU with the LM815 and LM915 voltage regulators, but I have some questions.
First of all, is there any convenient/cost effective options of premade external PSU's that fit those characteristics for EU plugs so I don't have to worry about that?
Secondly, if I have +15V, -15V and 0V (PWR GND) as outputs of my homemade PSU, how do I wire the cables to make sure everything is safe? Every board will have +15V and -15V pins connected to the positive and negative pins of the IC's with two 100nF bypass caps going from each rail to 0V for each IC. Do I need a 47uF electrolytic cap on each board from rail to rail for decoupling or just once? Do I wire the 0V (PWR GND) to the signal ground (GND)? Do I run wires from the PSU outputs (+15V, -15V, 0V) to each board?
Last question, are SMD X-Caps and bridge rectifiers reliable for an audio PSU?
Thanks in advance,
Raw Coniine
I'm trying to design an EQ and want to have separate line in/out PCB's and separate PCB's for each frequency band. I have been trying to design a pretty straightforward ±15V PSU with the LM815 and LM915 voltage regulators, but I have some questions.
First of all, is there any convenient/cost effective options of premade external PSU's that fit those characteristics for EU plugs so I don't have to worry about that?
Secondly, if I have +15V, -15V and 0V (PWR GND) as outputs of my homemade PSU, how do I wire the cables to make sure everything is safe? Every board will have +15V and -15V pins connected to the positive and negative pins of the IC's with two 100nF bypass caps going from each rail to 0V for each IC. Do I need a 47uF electrolytic cap on each board from rail to rail for decoupling or just once? Do I wire the 0V (PWR GND) to the signal ground (GND)? Do I run wires from the PSU outputs (+15V, -15V, 0V) to each board?
Last question, are SMD X-Caps and bridge rectifiers reliable for an audio PSU?
Thanks in advance,
Raw Coniine