Tag Archives: power supply

rack: loaded and powered up

Here’s the test of the power supply and the power inlet of the patch panel.

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enclosure and power supply (intermediate version)

Here’s photos of the intermediate version of the power supply in its enclosure. The front of the unit is at the top of the image, and the back is at the bottom. You’re also looking up at the the unit in these photos. Power switch and LED indicators are at the top left of the […]

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power supply (early version)

The power supply has to provide, at a minimum, 0.7A @ +12V for the VL70m (power consumption measured at 0.6A @ 13.1V), and 1.3A @ +9V for the pitch-to-MIDI converters (GI-10: 0.26A @ 10.2V; GI-20: 0.8A @ 11.3V). Eventually, it will also provide bipolar power for the pre-amplifier (±12V or ±15V likely created using a […]

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enclosures: pre-amp and power supply panels (physical artifacts)

As an update to the previous post, here’re photos of the machined and loaded panels. The front panel holds, from left to right, the power switch, 4 LED indicators (+15V, +12V, -12V and +9V), two filter bypass switches and two output level pots. The rear panel holds, from left to right, stereo audio inputs (unbalanced), […]

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enclosures: pre-amp and power supply panels

One handy box that forms a crucial (if unglamorous) part of io 0.0.1 beta++ contains the audio preamp (basically, a couple of filters, signal amplifiers and a balanced line driver) and power supply/distribution components (9V, ±12V). I don’t have a name for this box yet, but here are the layouts for the front and rear […]

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