Jump to content

Simple Stereo Noise Limiter/Gate


Rio
 Share

Recommended Posts

Hello,

I was looking for a simple stereo solution for a noise gate to reduce noise of a pair of SID 6581. I know, that is a common thread already here:

... but, there are some limitations for me. For example, it is not soooo easy to get all the parts or transistors must matched (!) and so I was more looking for a rather simple smart solution. So I found the following:

http://www.electroschematics.com/250/stereo-noise-blanker-suppressor-limiter/

which looks very simple. But the author mentioned:

Quote

The maximum input level is 210mV and the distorsion is less than 0.01%.

Would that be ok for the SID 6581? Or is there something against the solution or would the output voltage of the SID be too high for that?

Greetings,

rio

Edited by Rio
Link to comment
Share on other sites

thx, but therefor I haven't the negative VCC– for TL082 or TL084.

I search a solution, where I can reuse the 9V~ or 14Vdc or 5Vdc of C64 optimized PSU schematic.

Greetings,

 

EDIT:

Could that following circuit (Figure. 3) work too? No additional OPAmp is needed:

https://www.edn.com/electronics-blogs/the-practicing-instrumentation-engineer/4422750/Simple-circuits-reduce-regulator-noise-floor

rio

Edited by Rio
Link to comment
Share on other sites

hey,

What does A1 stand for?

greetings, rio

 

what about that:

Quote

EDIT:

Could that following circuit (Figure. 3) work too? No additional OPAmp is needed:

https://www.edn.com/electronics-blogs/the-practicing-instrumentation-engineer/4422750/Simple-circuits-reduce-regulator-noise-floor

 

Edited by Rio
Link to comment
Share on other sites

A1 is summing both channel before detection, A2 is the detection and control the LM13600.
 

Just now, Rio said:

EDIT:

Could that following circuit (Figure. 3) work too? No additional OPAmp is needed:

https://www.edn.com/electronics-blogs/the-practicing-instrumentation-engineer/4422750/Simple-circuits-reduce-regulator-noise-floor

This is for regulation, to replace a 7805, if I well understand.

Edited by Antichambre
Link to comment
Share on other sites

  • 3 years later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...