You would need to see the physical position of those components to comment on the purpose or correctness. Looking at the schematic tells nothing about where those ground connections are made or whether its an error there at the input to the LTP. It seems you have copied that image from a Chinese DIY website, so why not tell us what the reference is to, the model etc. so we can perhaps see what the significance is. It may be concerned with RF filtering and that can operate quite differently to audio circuits.
Note: There should be a similar circuit for the left channel so compare that if you can, to see if anything is different there.
Note: There should be a similar circuit for the left channel so compare that if you can, to see if anything is different there.
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Looks a lot like an error on the schematic. Or possibly a poorly drawn cap between two different nodes.
The presence of 470pf to ground there makes sense to deal with RF on the input.
Stretching things a bit, it might be possible that this amplifier has a low noise input ground and a "power ground". In such a case I could conceive of wanting a cap between the input ground and "power ground".
I would however expect to see the different grounds clearly distinguished on the schematics.
The presence of 470pf to ground there makes sense to deal with RF on the input.
Stretching things a bit, it might be possible that this amplifier has a low noise input ground and a "power ground". In such a case I could conceive of wanting a cap between the input ground and "power ground".
I would however expect to see the different grounds clearly distinguished on the schematics.
It would help to know make and model but mistakes on a drawing caused by omission of a 'boost' switch on a newer model with a link drawn instead of component deletion.
Is it on the board 'stuffed' as the Americans put it on the newer schematics.
Is it on the board 'stuffed' as the Americans put it on the newer schematics.
Please see why this capacitor is connected in this way？？？
What's the effect?
I worked on a unit that had 2 capacitors drawn that way but when you looked at the board layout it became clear. The 2 'shorted' caps were on either side of a 3rd cap that was part of a Voltage to frequency converter. The 'shorted' caps were shields flanking the cap connected to the V-F chip.
G²
Sorry. After I mentioned a "Voltage to frequency" chip, I thought "V-F" would be a shorter version of Voltage to Frequency.
G²
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