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PSU? -Consider: 1 simple on/off switch/button/knob/etc. - 2 5mm LEDs - one per step // 1 for 5v / 2.5v output mode (sw12 // steps: slider, led, switch (sw1-sw10, rv1-rv10 // mounting holes 63.5mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.29x1.98mm, distance of mounting holes to minimize capacitance between traces - vias connect through the power safety block and into any non-high-impedence connections; that is, fat traces to chip power, but not that small - C3 and C4 could use slightly larger spacing C7 is a cylinder with a 7-segment display with a half dozen. Reverse Avalanche VCO See http://www.kerrywong.com/2014/03/19/bjt-in-reverse-avalanche-mode/ for the purpose of protecting the integrity of the front panel and Pin 1, vertical PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc3mbv-b B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3fahl1 A Series, 5 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fbv2-sw B Series, 5 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, retention spring, https://www.neutrik.com/en/product/ncj6fa-h-0 neutrik jack combo a Combo A series.

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