What I found by measurement was that as the offset needing correction grew, servo authority diminished.
The gain error was in addition to static offset errors in the servo.
In the example I gave earlier for the headphone amp a trim was inserted in Rg.
Not a good solution however.
Search found 71 matches: deboo
Searched query: deboo
- Thu Dec 30, 2021 10:15 am
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
- Thu Dec 30, 2021 10:05 am
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
Re: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
In the conventional configuration, you do not need any matching. The important point, then, is the leakage resistor of the capacitor. This resistor gives the DC gain that comes in the residual error. ( A perfect integrator gives a zero error, because it has infinite gain ). One can calculate the err...
- Thu Dec 30, 2021 8:12 am
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
- Thu Dec 30, 2021 7:23 am
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
Re: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
There is a catch in the Deboo integrator, differential or single. It is sensitive to resistor mismatch. This can be important or not, depending of the application. When in need for near perfect integrators, one needs capacitors with ...
- Sun Nov 28, 2021 1:53 pm
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
Re: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
... copy. It turns out that I did find the screen capture and also learned that it was introduced in the 4th edition. Self's "1C" servo is a Deboo and is one of the few audio citations for it other than myself and cocolog-nifty's Differential Deboo. cocolognifty's Differential Deboo : http://designideas.cocolog-nifty.com/blog/2013/09/deboo-different.html ...
- Thu Aug 08, 2019 2:16 pm
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
Re: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
Take a look here at some servo bandwidth tests I did with an OP07: https://proaudiodesignforum.com/forum/p ... t=20#p4999
You might want to read the full thread.
You might want to read the full thread.
- Thu Aug 08, 2019 1:13 pm
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
Re: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
I compared using a differential Deboo integrator, and a non inverting two caps integrator. Integrating capacitor(s) insulation resistor does result in DC offset error in both cases. With the Deboo the resistor mismatch brings a similar effect. ...
- Thu Aug 08, 2019 11:34 am
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
Re: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
Using a Deboo configuration, the unavoidable resistor mismatch results in an additional parasitic resistor across the capacitor of a positive or negative high resistance. Use precision resistors or a trim if its that critical. ...
- Thu Aug 08, 2019 9:21 am
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
Re: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
There is a catch in the Deboo integrator, differential or single. It is sensitive to resistor mismatch. This can be important or not, depending of the application. When in need for near perfect integrators, one needs capacitors with very ...
- Wed Aug 07, 2019 5:16 am
- Forum: Pro Audio Design
- Topic: A Differential Deboo Integrator to Servo Mic and Low-Level Preamps
- Replies: 14
- Views: 56878
Re: A Differential Deboo Integrator to Servo the THAT1570/1583
"Consider The Deboo Integrator For Unipolar Noninverting Designs," Elliot Simons, Maxim Integrated Products, Electronic Design, March 18, 2002. The non-inverting Deboo integrator has a passive input pole which is important ...