universal chip pre-amp project

[40 watt]

On the other hand...Digi's bridge module would be perfect for the My Ref C and simplifies things with one power supply for both channels...

[digi01]

hello i am back.i have a new stuff.
this DUAL power supply is for universal using.although it is a typical application of the fixed regulator chips,i plan everything.i am pretty happy when i got the pcb and have it running
the pcb size is as same as UCPv1 & UCPv2,the module have five output ports.

-zang

[Evilsizer]

wow nice work digi!

[40 watt]

Active regulator in mini?...with up to 3000uf per rail available, or whatever capacitors fit the board?

Simply brilliant!

Those are additional outputs? For a minute there I thought the extra pads on the output traces were for shunting LED's.

Can that be done?

[40 watt]

Is this the little bug for B1, I assume the bridge rectifier:: Little Bug

...60 cents.

...83 cents from another manufacturer.

both at Digikey.

For this I could probably recycle a transformer from an older dead Philips CD player I have, maybe.

Somehow, I have to wrap my head around the idea of 60 cents vs $1.23 X 8 [$9.84] for MUR86O's. The building of many active speaker systems just became more practical.


...looking closer at the traces the AC in are on diagonal corners. Hmmmm....
So much to learn and experience.

[40 watt]

This one's a 2-amp but it appears to have the right pin pattern with AC on diagonal corners. 5mm lead spacing?

79 cents at Mouser \

1.5 amp 200V for 48 cents. With the regulators and diodes this would be a great power supply. Frees up cash for premium capacitors...or not.

[digi01]

Originally Posted by 40 watt

Active regulator in mini?...with up to 3000uf per rail available, or whatever capacitors fit the board?
Those are additional outputs? For a minute there I thought the extra pads on the output traces were for shunting LED's.

yes,the mini is first considered.
some small kind computer caps 2200uf/16v will fit the board for a purpose of +/-12VDC output,using LM7812/LM7912 regulator.
the extra pads on the output traces were for four 3pins sip header.they are very useful board to board wiring & do some digital kind stuff.
the B1 is a column bridge rectifier,5mm lead spacing.

thanks for the comment about the layout,i am enjoy this thingzang

[digi01]

Originally Posted by 40 watt

1.5 amp 200V for 48 cents. With the regulators and diodes this would be a great power supply. Frees up cash for premium capacitors...or not.

i recommand use tantium caps for C5,C6.

[40 watt]

Originally Posted by digi01

i recommand use tantium caps for C5,C6.

I think this from the National App notes explains the diode and the 10uf output capacitor. For protection against a shorted input to ground. Nice.

[danielwritesbac]

Originally Posted by digi01

yes,the mini is first considered.
some small kind computer caps 2200uf/16v will fit the board for a purpose of +/-12VDC output,using LM7812/LM7912 regulator.
the extra pads on the output traces were for four 3pins sip header.they are very useful board to board wiring & do some digital kind stuff.
the B1 is a column bridge rectifier,5mm lead spacing.

thanks for the comment about the layout,i am enjoy this thingzang

At C1, C2, C3, C4, size can be 1000uF or larger and at 25vdc rating because of rectifying/smoothing task (caps at the rectifier are exposed to more than DC).

After the smoothing task is complete, there is only DC, and then the caps can be 16vdc rated.