low Distortion Oscillator GS 5534-8 (NE5534)

[SandyTodorov1]

And measurements
TI 5534 production at Texas Instruments
BG 5534 production at Bulgaria.

 

[SandyTodorov1]

Measurements with Load 1K and 10K

 

[SandyTodorov1]

The latest advances.
In post #40 in calculations there is an error, the result must be multiplied by 5

 

[SandyTodorov1]

Recent changes

 

[tailai]

Very good research, very useful！

 

[SandyTodorov1]

I apologize for the error in the scheme.

 

[HpW]

Measurements with Load 1K and 10K

BTW: Do you compensate the THD attenuation given from your passive notch?
Mainly the 2..3 Hars. may your passive Notch is not that flat. Just a guess

Did you also considered the new OPA1656 while Victor loves them. May also only use one of the dual to get ride of cross talks..

Hp

 

[SandyTodorov1]

These are just experiments for testing some ideas.
The OPA 1656 would be better if you do something with integrated circuits.
There are more experiments. I have to try and stabilize the amplitude with Sample-and-Hold.
The real project will have discrete amplifiers.

 

[thumb]

Looks very good, can wait to see more progress. Victor has made a 9Hz osc. with a clever S/H circuit

 

[SandyTodorov1]

GS OPA1642 2x4 V1.0

 

[electronic]

Mr. Todorov,

Can you sell one complete unit across the north border?

 

[SandyTodorov1]

The board is not finished
This project is not commercial.
Just swank.🙂

 

[BSST]

Looks very good, can wait to see more progress. Victor has made a 9Hz osc. with a clever S/H circuit

Would you point me to a post detailing Victor's S/H? Thank you!

 

[thumb]

I remember wrong it is janascard.cz it is here
Download

 

[BSST]

Thanks, thumb.

 

[SandyTodorov1]

PCB on the latest version.

 

[SandyTodorov1]

Measurements already on a real board.
0,000 0064% (-143,87dB) THD 1kHz is reduced 60dB

 

[thumb]

Measurements already on a real board.
0,000 0064% (-143,87dB) THD 1kHz is reduced 60dB

Very Niicce, I would like to try build one !! Do you share layout or shall I do my own ?

 

[SandyTodorov1]

Unfortunately, the platform is as stupid as anything in the west.
Does not support RAR format that allows for greater compression.
The zip form is limited to 3.81MV and the project is larger.
And the platform does not allow to upload and zip format divided into separate parts.

On file GS 5534 SG 8.3.rar. ZIP uncheck the ZIP file extension is RAR format.
This is altium's entire project

 

[BSST]

Very impressive work!

It appears you've made provisions to make the oscillator variable over frequency. Any projections on the covered range? Do the AGC component values have to change with varying frequency?

Again, great work!

Steve