Audio Phaser, Electronics Today International, September 1976

Free online ressources on guitars, amps, effects, guitar technique and more. Dedicated to the fond memory of its founder SPeter Davidoff.
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cspar
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Post by cspar »

Yes please Modman. I'm fond of history and curious too.

It sounds like you have some intresting stories to tell uncleboko.

How about a "Library Caveat" sticky thread for the Davidoff Library?

It could start with a caveat pertaining to magazine articles in general and then leave room for multiple article spaning historical tidbits and saucy details via comments from folks in the know.

Seems that could work nicely.

The tone row seems played out here, I'll rein in my harmonious dissonance.
If I post in this thread again I'm sticking to the circuit. :horsey: cheers folks
"Just because the forgoing circuits have produced results there is no reason experimenting won't lead to added results." L. E. Darling, in his article containing the earliest published vacuum tube synthesizer circuit, Popular Science Jan 1920

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uncleboko
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Post by uncleboko »

modman wrote: 15 Jul 2022, 19:04
uncleboko wrote: 15 Jul 2022, 06:28 Remember also that the editorial staff of both ETI and Hobby Electronics were apt to change guitar pedal circuits from those offered, which were working well, into something they wanted to see, cutting pay for original article authors.
Maybe we should move this discussion to a separate caveat thread about the article. I, for one, don't know much about the background of these different magazines. I'd love to know more about that. I also kind of arrived at the conclusion of suspecting articles without authors of plagiarism.
You may have a point there!

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Manfred
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Post by Manfred »

As promised, here is the PCB layout clone.
ETI Phasor Layout PCB.jpg
Ready-to-Print PDF-files:
ETI Phasor Layout Component Side.pdf
(37.85 KiB) Downloaded 47 times
ETI Phasor Layout Solder Side.pdf
(25.35 KiB) Downloaded 50 times
SprintLayout6.0 file:
ETI Audio Phaser PCB Layout.zip
(59.36 KiB) Downloaded 40 times

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ppluis0
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Post by ppluis0 »

Manfred wrote: 18 Jul 2022, 20:21 As promised, here is the PCB layout clone.
Nice work Manfred !!! :worship:

This is a perfect example of how a classic PCB should be drawn.
Currently, the autorouter (of the design software we choose) is left in charge of completing the connections, but the aesthetic part and the elegance of an old-school drawn board are lost.

Cheers,
Jose

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Manfred
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Post by Manfred »

Thanks for the compliment Jose,

these old school PCB clones are a hard and time consuming job but I love doing that.
It has something nostalgic for me and reminds me of the start of my career in electrical engineering in the year 1968.
Actually, the interest started much earlier in 1965 with an electrical experiment kit my parents gave me for Christmas.
How time has passed now I am retired for six years.

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Post by BMS1971 »

Thanks a LOT, the CD4049UBE is a great discovery for me
Ben

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BMS1971
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Post by BMS1971 »

Manfred wrote: 19 Jul 2022, 13:30 Thanks for the compliment Jose,

these old school PCB clones are a hard and time consuming job but I love doing that.
It has something nostalgic for me and reminds me of the start of my career in electrical engineering in the year 1968.
Actually, the interest started much earlier in 1965 with an electrical experiment kit my parents gave me for Christmas.
How time has passed now I am retired for six years.
If I want to add a depth pot, I suppose it's goes where the trimpot is?

Benoit

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BMS1971
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Post by BMS1971 »

Manfred wrote: 19 Jul 2022, 13:30 Thanks for the compliment Jose,

these old school PCB clones are a hard and time consuming job but I love doing that.
It has something nostalgic for me and reminds me of the start of my career in electrical engineering in the year 1968.
Actually, the interest started much earlier in 1965 with an electrical experiment kit my parents gave me for Christmas.
How time has passed now I am retired for six years.
By the way, have you tried it?

Benoit

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