New Linear Audio publication!

Would you folks mind takin a look at my attempt at the regulator to see if anything stands out as being poorly laid out or bad for final outcome. I am unsure about how to add a ground screen in Eagle under sensitive portion.

Gonna try a discrete version of the Putzey volume control next...assuming this works.
 

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Would you folks mind takin a look at my attempt at the regulator to see if anything stands out as being poorly laid out or bad for final outcome. I am unsure about how to add a ground screen in Eagle under sensitive portion.

Gonna try a discrete version of the Putzey volume control next...assuming this works.

moderator should probably move your post to the "Super Regulator collecting the facts" thread -- an observation -- the sense resistors shouldn't be at right angles, the error amplifier should be rotated 90 degrees so that pins 2 and 3 have the shortest possible route to the sense resistors. using capacitors larger than those specified by Walt will affect the performance of the regulator. those originally specified in the 1995 article are no longer available so use panasonic fc.
 
AX tech editor
Joined 2002
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New Linear Audio Vol 6 just out!

Dear friends, Vol 6 has just been posted on the linearaudio.net website!
To give you a flavor of the contents:

David Zan is preparing to write about Advanced audio power amplifiers in a future issue – in his Guest Editorial he explains his reasoning and what he means by ‘Advanced’. Our friend Bob Cordell explains his own perspective on Advanced Amplifier concepts in TPC and TMC Feedback Compensation for Power Amplifiers. Robert Munnig Schmidt is back with Fine-tuning and measurements of a sensorless motional feedback subwoofer. In RIAA Revisited, or how to better judge documented figures, Hans Polak reconciles phono preamp specifications that often excel in data that cannot be compared between units. In his Introduction to noise Ronald Quan provides a nice, clear overview of noise issues in circuit design.

Then it’s on to circuit design with Frank Blöhbaum showing that you can use an unseemly collection of exotic vacuum devices to make great Multiplied Transconductance Amplifiers. Diehard Erno Borbely teamed up again with Sigurd Ruschkowski to design Proteus – a current input moving coil preamp. In contrast, Hannes Allmaier went back to Peter Walker’s 3-transistor design and morphed it into The High-Octane phono preamp. Daniel Joffe tried his hand – successfully – at Practical Electronic Control of Class AB Output Stage Quiescent Current.

Our own Michael Rothacher, no newcomer to SITs, developed an interactive app for A Concise Model for Static Induction Transistor IV Characteristics which you can use with any Spice-compatible simulator. And if you ever wondered How to design a winning, blind-preferred loudspeaker – David Moran (yes, that David Moran) tells all.

Our columnist Stan Curtis notes that The map is not the world and reviews what can go wrong with your wonderful prototype on its way to a real-world product. Finally, Jean Pierre Vanderreydt reviews Douglas Self’s latest tome, Audio Power Amplifier Design, 6th edition, and likes what he reads.

Enjoy another issue packed with creative, innovative and thought-provoking articles!

jan
 
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