Multipattern condenser microphone oscillator

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2 layer board of 1.57x1.43 inches (39.95x36.37 mm).
Shared on March 12th, 2017 15:30.

Creates adjustable +- polarization voltages for multipattern condenser microphone capsules.

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LDC FET microphone with source follower (single-board version)

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2 layer board of 1.61x2.05 inches (40.77x52.02 mm).
Shared on March 12th, 2017 02:28.

A FET+source follower transformer-coupled mic. No polarization board necessary.

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2 layer board of 1.61x2.05 inches (40.77x52.02 mm).
Shared on March 11th, 2017 23:50.

A FET+source follower transformer-coupled mic. Requires polarization voltage! (Use the oscilltor PCB.)

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2 layer board of 1.31x1.50 inches (33.20x38.02 mm).
Shared on February 21st, 2017 04:00.

Control panel for the preamp with switched pad

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2 layer board of 1.53x1.27 inches (38.96x32.36 mm).
Shared on February 13th, 2017 00:04.

Creates an adjustable capsule polarization voltage for condenser microphones

Schematic: https://dl.dropboxusercontent.com/u/9878279/Jon%20Patton%27s%20layouts/MIsc/Oscillator%20for%20Schoeps%20Circuits.png

Mouser cart: http://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=5a0be69ef3

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