Electronic Music Articles

Don writes up some articles.  Electronic music fans might find them interesting.

Guitar Electronics

• A Discrete FET Guitar Preamp
  Don's famous FET preamp.
• An FET Preamp Cable
  A phantom-powered preamp built into a 1/4-inch phone plug.
• Pickups Part 1: Response Effects of Guitar Pickup Position and Width
  Analysis, equations and plots of pickup response curves.
• Pickups Part 2: Response Effects of Guitar Pickup Mixing
  Analysis, equations and response plots of mixes of pickups.
• Pickups Part 3: Pickup Response Demonstration Applet
  Try it out!  Move pickups around, draw pretty curves.

Keyboards

• Hohner Clavinet Resources
  A collection of resources for the Hohner Clavinet.
• Don's Mellotron Page
  Mellotron resources, notes, projects, the Mellotronists mailing list and the tale of a restored M400 with Mike Pinder's autograph.
• Mellotron/Chamberlin Patent Reviews
  Reviews of the Harry Chamberlin Mellotron Patents, as well as the Birotron patents.

Original Synthesizer Circuits

• The Quadrature Trapezoid Voltage Controlled Oscillator
  A new oscillator topology features quadrature waveform outputs and thru-zero FM.
• Voltage Controlled Duty Cycle Sawtooth Circuit
  Some quick notes on a circuit I came up that can morph from a sawtooth to a triangle to a reverse sawtooth with a control voltage.
• An Interpolating Scanner Circuit
  A new approach to building an interpolating scanner.

Synthesizers

• Analog Synthesizer Resources
  My favorite synthesizer design links.  General, historical, manufacturers, design, schematics, research.
• ARP Synthesizers: ARP Resources
  A collection of resources for ARP Synthesizers, including the ARP/Rhodes Chroma.
• ARP Synthesizers: ARP Patents
  Reviews and tasty commentary about ARP-related patents.
  Updated September 1, 2007
• ARP/Rhodes Chroma: Upgrading the Power Supply ("Nuclear Powered Chroma")
  My adventures replacing a Rhodes Chroma power supply with a modern switching unit.
• ARP/Rhodes Chroma: Chroma Pedalboard
  A nice pedal arrangement for the Rhodes Chroma.
• Moog Synthesizers: Moog Resources
  A collection of Moog resources.
• Moog Synthesizers: Moog Patents
  Reviews and commentary on patents by Robert Moog and patents for Moog products.