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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

AKSA's Lender Preamp with 40Vpp Output
AKSA's Lender Preamp with 40Vpp Output
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Old 13th July 2018, 05:49 PM   #711
JPS64 is offline JPS64  Germany
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Join Date: May 2011
AKSA's Lender Preamp with 40Vpp Output
@Carl Huff


I donīt personally like signal traces who see each other (green/red layers).


Using this parts allows to put potentiometer directly on entry:
- ACHSKUPPLUNG 2: Shaft coupler from 6mm to 6 mm at reichelt elektronik
- P6 ACHSE: Extension shaft 6 mm at reichelt elektronik


KSA and DN needs heatsinking.


JP
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Old 13th July 2018, 06:25 PM   #712
Carl_Huff is offline Carl_Huff  United States
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Location: Bakersfield, CA
Quote:
Originally Posted by JPS64 View Post
...

I donīt personally like signal traces who see each other (green/red layers)...

JP
I am describing layers on a bog standard 2 layer PCB. I don't understand what you mean by 'seeing each other'. Could you please elaborate??

Quote:
Originally Posted by JPS64 View Post
...

... KSA and DN needs heatsinking.

JP
Yea, in this first pass I have done little beyond adapt an existing layout.

The PCB as shown is intended to be attached to the front panel. No pot extensions are required. The ribbon cable to the IO board allows for depth differences in enclosures.
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Old 13th July 2018, 06:51 PM   #713
JPS64 is offline JPS64  Germany
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AKSA's Lender Preamp with 40Vpp Output
Avoid, as possible, crossing red layer and green layer routed signals.

Well, yes, I‘m coming from HF development.

JP
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Old 13th July 2018, 07:14 PM   #714
Carl_Huff is offline Carl_Huff  United States
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Location: Bakersfield, CA
Quote:
Originally Posted by JPS64 View Post
Avoid, as possible, crossing red layer and green layer routed signals.

Well, yes, I‘m coming from HF development.

JP
Aah, Okay. Please note that 90+ percent of the topside 'red' signal traces are positioned above ground on the bottom side of the PCB.
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Old 13th July 2018, 11:03 PM   #715
Kokanee is online now Kokanee  Mexico
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Location: Puerto Vallarta/Kooteneys
AKSA's Lender Preamp with 40Vpp Output
Thanks for the help with the copper heat sinks. I have some chip amps and a few others to hone my copper skills on before building discretes. I am going to save some copper for the Alpha's to maybe beef up the heat sinks on the cpu coolers. Love to experiment!!!

Cheers

McD
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Old Yesterday, 07:00 AM   #716
patriz is offline patriz
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Hi X What is it your suggestion for a 3,3k load and an amp with 15dB gain?
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