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Little help with VU meters.
Little help with VU meters.
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Old 17th June 2020, 11:49 AM   #1
nenad88 is offline nenad88  Serbia
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Default Little help with VU meters.

Hi, I was preparing to make this VU meter driver A simple passive logarithmic VU-meter on breadboard when I saw topic on this forum about this board:
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Click the image to open in full size.
This is schematic I planned to use for breadboard project:
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By parts they seem pretty close, could I somehow omit opamp and power stage from this board and use it like VU driver from schematic?

Will post sch from ebay board if I manage to find it, thanks.

I think IC is lm358n
Click the image to open in full size.

This board could help, they are pretty similar:
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Click the image to open in full size.
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Last edited by nenad88; 17th June 2020 at 12:20 PM.
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Old 4th July 2020, 08:45 PM   #2
dangus is offline dangus  Canada
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A passive VU meter may iincrease distortion, so it's safer to have a buffer amp.
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Old 4th July 2020, 10:22 PM   #3
cbdb is offline cbdb  Canada
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What is the meter for?
 

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