biopac

Nfodb.com - largest cracks database. Most recent updates of keygens, cracks, serials for apps, programs and games! I want my subcircuit to have variable/parameter/value. Something like every resistor has resistance. So, when I draw schematics, its very easy to.

May 16, 2017 - Has anyone used any of the consumer-grade audio power amps such as the. LM1825, TDA2030, or TDS7297 as a basic DC power opamp? Any reason they shouldn't be used as power supply regulators, TEC controllers, etc? Re: Using consumer-grade power amp as Power opamp, Don Y.

On 02:00 PM, JM wrote: >If you are wondering about all this 'Thompson' business, the Russell & >Solomon paper just makes the bare statement that a current-mirror in the >input-pair stage for differential-to-single-ended conversion was first >used in an opamp by J E Thompson at Motorola in 1966- so far as the >authors are aware. No reference is given. I don't know who first applied >it to a power amplifier, and if anyone can tell me I would be most >interested. However that seems to me no reason for calling the >configuration a Thompson. Many people are known to have contributed, and >you might as well call it a Blumlein (input-pair) or a Miller.

>(compensation) My Blameless name refers to later developments such as >heavy local feedback in the input pair. I read the article and yeah, I don't have any idea why the author is using Mr. Maxim Blokh Manual Of Chess. Thompson's name on the topology in Fig.

It looks like the topology used in just about every solid state audio power amplifier ever. Maybe he was the first to use a current-mirror as a differential pair load on a chip or something. On Sun, 25 Jun 2017 19:00:48 +0100, JM wrote: >On 22:12, Jim Thompson wrote: >>Anyone have access to this. >>>>'Variations on the Complementary Folded Cascode Transimpedance Stage >>in Discrete Audio Frequency Power Amplifiers' >>>>- Electronics World November 2013 >>>>(That's all the info I have, I don't know the author's name.) >>>.Jim Thompson >>>>From a post by Douglas Self >>>*************** >>I have just finished reading Linear Audio Volume 11, and once again Jan >Uk2000 Stansted Seriale on this page. Didden is to be congratulated on a generally first-class job. >>But- as you might imagine, I make an exception for the Michael Kiwanuka >article, which contains a lot of criticism aimed at me.

>>The amplifier circuit Kiwanka is complaining about is Fig 15.1 in Audio >Power Amplifier Design. Iso 9001 Management Review Meeting Presentation here. (6th edn) A copy is attached.

The biasing system >controls TR1 input-pair tail-current, with the bias voltage passed to >VAS current-source TR5, crucially via resistor R23. This looks like a >sound piece of penny-pinching but actually has a unexpected limitation >in positive slew-rate, which I duly explain and cure. The same scheme >was used in the original EW article in Sept 1994. I think all my >amplifier designs, for the last 10 years at least, have used separate >biasing for the two current-sources to avoid this issue. >>Kiwanka's Figure 1 has a biasing system that controls the current >through the VAS source TR5, and no bias sharing, which is of course a >completely different situation. Whether this change was deliberate or >accidental I don't know, but the rest of the article is naturally >irrelevant to anything I have written, so you needn't try to make sense >of it.

>>If you are wondering about all this 'Thompson' business, the Russell & >Solomon paper just makes the bare statement that a current-mirror in the >input-pair stage for differential-to-single-ended conversion was first >used in an opamp by J E Thompson at Motorola in 1966- so far as the >authors are aware. No reference is given. I don't know who first applied >it to a power amplifier, and if anyone can tell me I would be most >interested.

However that seems to me no reason for calling the >configuration a Thompson. Many people are known to have contributed, and >you might as well call it a Blumlein (input-pair) or a Miller.

>(compensation) My Blameless name refers to later developments such as >heavy local feedback in the input pair. I never personally claimed the configuration myself, but Tom Frederiksen, in several of his missives attributes it to me. Though, actually, his attribution is incomplete, there's substantially more to it in regards current matching. I first applied it ~1963. Kiwanuka has written yet more fallacious diatribes.