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Messages - Leopard

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Schematics and Layouts / 2x11W stereo amplifier [TDA7360]
« on: October 19, 2009, 12:40:27 PM »
Hi all!

First of all, here's a link to the TDA7360 PDF: http://www.datasheetcatalog.org/datasheet/stmicroelectronics/1499.pdf

I've tried to make my own PCB layout now. I made a breadboard version which is completed with pretty much the same schematic, and now I would like to take this project to the next step.

List of parts in my layout:

C1 = Input capacitor, value 220nF
C2 = see C1
C3 = Output capacitor, value 2200uF 16V, Low ESR
C4 = see C3
C5 = Power filtering capacitor, value 3300uF 25V, Low ESR
C6 = Stand-by capacitor, value 47uF 25V
C7 = Power filtering capacitor, value 680nF
C8 = see C7
C9 = SVR capacitor, value 220uF 25V, Low ESR
J1 = metal jumper which connects C9 and pin 7 of TDA7360

Any comments on the chip itself, the capacitor values etc. ideas are welcome. ;)



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The Newcomer's Forum / Re: Own simple schematic - comments wanted
« on: May 12, 2009, 09:56:53 AM »
Whoops! I accidentally put the power supply filtering cap like that... It should be tied to ground instead of being in the power supply path, right?
Also, the 10K volume pot should also be grounded. Output @ pin 5 should also have a ground connection before the electrolytic cap? Any more mistakes? :)

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The Newcomer's Forum / Own simple schematic - comments wanted
« on: May 11, 2009, 01:39:47 PM »
Hi all,

I just made this simple LM386-schematic, and would like to get some suggestions etc. regarding it. It is sort of based on the Little Gem / Ruby plus common sense, so nothing original here, just a cost-cutting variation. All feedback is welcome! :)

And a couple of questions:

1. Pin 7 is bypass, do I have to connect it to ground or can I just leave it open? Additionally, in the Ruby schematic, theres a 100nF cap before ground, what does it do?
2. What do I benefit if I added a 47nF input cap?
3. What are the 10ohm resistor + 47nF cap after output pin 5 for in the Ruby schematic? Noise filtering?



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Amplifier Discussion / Re: kind of repairing that change the tone?
« on: April 25, 2009, 02:09:22 PM »
hello,phatt..thx u so much for answering...wow, i have never think about that..thx a lot..actually,i;m just wondering what kind of repairing that can often damage/change the tone of amp and..is my amp repairing included? thx u  :)
Fixing broken solder joints shouldn't affect the tone of the amp. :)

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