The LED only provides a visual indication. If you don't need it then omit it. The LED has zero effect on the rails or 'sound quality'.
but output diode sound improve low mid high very details ,
see previously trade talk led s same sound improve , not tested leds
see previously trade talk led s same sound improve , not tested leds
I can assure you that the LED in your diagram (D5) has zero effect on sound quality.
The circuit you show is wrong.
The two zeners D8, D9 can be higher voltage than Vout, and then do nothing.
Or they can be lower Vz than Vout, and then they destroy themselves.
This is an incompetent design, do not build it!
Jan
The two zeners D8, D9 can be higher voltage than Vout, and then do nothing.
Or they can be lower Vz than Vout, and then they destroy themselves.
This is an incompetent design, do not build it!
Jan
no no mooly d8 d9 in5817 diode replace add leds
in5817 sound improve, replace leds not tested leds
in5817 sound improve, replace leds not tested leds
D8 and D9 only come into play at power on and power off and prevent reverse voltage across the rail should one rail charge or discharge quicker than the other. They serve an important function but are not critical on type. The diodes need to be normal 1A 100V or higher types like IN4004. They have zero impact on rail quality or sound quality as they are 100% non conducting in all normal use.
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You mean Schottky diodes?
In that case they may have a function for protection during turn-off.
They seem to have been added later (see change block), so that may be the reason.
This supply uses some voltage multiplication and may be sensitive to unequal turn off when switching off.
Ask yourself: in what situation do these diodes conduct any current?
They do absolutely nothing to improve the regulation, and absolutely nothing to the sound.
If you have a text that says otherwise, please post it here for us to read.
Jan
In that case they may have a function for protection during turn-off.
They seem to have been added later (see change block), so that may be the reason.
This supply uses some voltage multiplication and may be sensitive to unequal turn off when switching off.
Ask yourself: in what situation do these diodes conduct any current?
They do absolutely nothing to improve the regulation, and absolutely nothing to the sound.
If you have a text that says otherwise, please post it here for us to read.
Jan
On the multiplier aspect, I've seen these used a lot in various consumer equipment and they aften stress the caps (high peak ripple current) such that they fail after a relatively short time. It can be worth adding just an ohm or two of series resistance to the secondary feeds to limit that high current peak.
ya without D8 D9 normal sound , with D8 D9 very details sound , tested lm317 lm337 output for add diode very highly details sound
Those diodes have no function but to shunt spikes if higher than supply and reversed. Remove them, if one of them goes short for some reason, you have problems. Never seen protection implemented like this.
Rane Corporation wrong , you mean rane dj product have problems ?
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Hay nico ras , Remove colour glass Open your eyes and thinking
https://www.ranecommercial.com/legacy.php
https://www.ranecommercial.com/legacy.php
What do you mean colour glass? I have been in this field for 53 years. I sleep with eyes open and what I have forgotten you will still learn. I design products for any company that can afford my rates, and no-one has ever cancelled any project with me.
I will never understand how any engineer worth his salt cannot design the perfect amp with zero shortcomings, the wire with gain. You only start twisting this wire when you decide to start tweaking and creating a sound you like.
If you use first principles your design will be absolute but will sound crap, then you start tweaking the bass, mid, top-end forever before you try to release it into the market. Once you tweaked it the amplifier Wil have developed its own sound that reviewers can rip apart, and it becomes a great amp or total failure.
I will never understand how any engineer worth his salt cannot design the perfect amp with zero shortcomings, the wire with gain. You only start twisting this wire when you decide to start tweaking and creating a sound you like.
If you use first principles your design will be absolute but will sound crap, then you start tweaking the bass, mid, top-end forever before you try to release it into the market. Once you tweaked it the amplifier Wil have developed its own sound that reviewers can rip apart, and it becomes a great amp or total failure.
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You can design all kinds of rubbish into an amp making it look and is un necessary sophisticated but all you create is a thing that will break since the more components it has the less reliable it gets but the higher your price becomes and the more sophisticated to ******** becomes to advertise us. We had a friend Randy, who was punting very sophisticated designs here and wrote as many books on the subject, but alias hardly anything worked as described and some never worked at all. Many were just plain time bombs that could goat any instant, costing the builder a fortune, only to find out that it could never work from the outset.