Hi. I have a somewhat different plan for a power supply setup and wondering if there is anything inherently wrong or dangerous doing it this way.
I want to make a external power supply. It will have two transformers. One transformer rectified to dc in the external supply. Plus a second transformer in the external power supply but rectified in my audio equipment. So that part would be leaving the external power supply as low voltage ac. I want to use a multi pin avation plugs to run from external power supply to my audio equipment. Is it OK to mix the ac and dc on the aviation pin cable(4 pin cable 2 pins ac, 2 pins dc)?
Do toroids (toroidy audio grade) need to be a certain distance from the side of the chassis they are houses in?
Does each of the transformers need their own safety grounding point on the chassis or can they be star ground to the IEC Inlet grounding point?
Thanks for any help. I am still a little new to diy and don't want to make any costly mistakes.
I want to make a external power supply. It will have two transformers. One transformer rectified to dc in the external supply. Plus a second transformer in the external power supply but rectified in my audio equipment. So that part would be leaving the external power supply as low voltage ac. I want to use a multi pin avation plugs to run from external power supply to my audio equipment. Is it OK to mix the ac and dc on the aviation pin cable(4 pin cable 2 pins ac, 2 pins dc)?
Do toroids (toroidy audio grade) need to be a certain distance from the side of the chassis they are houses in?
Does each of the transformers need their own safety grounding point on the chassis or can they be star ground to the IEC Inlet grounding point?
Thanks for any help. I am still a little new to diy and don't want to make any costly mistakes.
How you connect your connectors is a matter for your choice. Bear in mind any signal current paths that may cause hum loops.
Toroid transformers do not need a specific distance from the side of the chassis/box they are housed in.
"Audio Grade" is a hyped up name designed to increase the price and proffit for the manufacturer.
A toroid transformer is a transformer, nothing else. Torroids are not suitable for class A or AB output use because they do not have an internal air gap for the magnetic pixies to do their job when a DC current is passed through the primary winding.
Safety Earth or grounding, is what it is. Connect it to the earth tag of your IEC or a star point. It is your choice as long as the Electrostatic Screen or Safety Earth point is connected to earth/ground.
Toroid transformers do not need a specific distance from the side of the chassis/box they are housed in.
"Audio Grade" is a hyped up name designed to increase the price and proffit for the manufacturer.
A toroid transformer is a transformer, nothing else. Torroids are not suitable for class A or AB output use because they do not have an internal air gap for the magnetic pixies to do their job when a DC current is passed through the primary winding.
Safety Earth or grounding, is what it is. Connect it to the earth tag of your IEC or a star point. It is your choice as long as the Electrostatic Screen or Safety Earth point is connected to earth/ground.
If it were me, unless the audio equipment requires a voltage multiplier, I would rectify the AC power feeding the audio equipment to avoid any interference. It's perfectly fine to supply DC current to a conventional rectified power supply circuit.
No, toroidal transformers are less fussy for placement due to its very low flux leakage as long as it's not touching the chassis side walls.
You can connect the transformers ground wires to IEC inlet grounding point.
