Wien bridge oscillator math

[patricktoday]

Originally Posted by Conrad Hoffman

Though I don't know the distortion that can be achieved, the Analog Devices DDS chips seem to be the way to go these days in terms of function generators.

These look amazing! I will definitely look into these for future projects... assuming I can find a DIP or breakout board. Surface mount is definitely out of my league.

[RNMarsh]

Originally Posted by paba

Like I said a few posts back, some tuner manufacturers had suspicious specs but if we read the 1978 Yamaha T-2 owner's manual they say they used the following instruments to measure their tuner.

VHF SG: Meguro MSG-297 or 296
VHF SG: GE501
stereo moduluator: Meguro MSG-211 (one of the best ever btw)
Distortion analyzer HP4333A

All very credible.

and finally the
The T-2 spec is 0.05%

hope that clarifies
paba

It does. Now I'm going to go buy a T2 and check it out. Thx-RNMarsh

[paba]

I just mention the T-2 because I had the info handy.. but it is a very good tuner, but there are other possible choices too...this one is not low cost but a keeper. They do appear from time to time.

depends what you need, RF performance or sound quality or both... or convenience like memory presets etc...

you can do some reading here, just click on the left side for the brand of interest.
www.fmtunerinfo.com


cheers
paba