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Fix R25/R1 connection - One SPST switch per step, to set output voltages. (10 One SPDT switch to disable clock (pause). SPST switch per step, to enable/disable gate per step. (10 - CLOCK in // CLOCK in // GATE out - could be shortened a bit with a half dozen. Reverse Avalanche VCO See http://www.kerrywong.com/2014/03/19/bjt-in-reverse-avalanche-mode/ for the Adafruit Feather series of boards, https://learn.adafruit.com/adafruit-feather/feather-specification Footprint for Mini-Circuits case TT1224 (https://ww2.minicircuits.com/case_style/TT1224.pdf) following land-pattern PL-258, including GND-vias (https://www.minicircuits.com/pcb/98-pl258.pdf Footprint for Mini-Circuits case HF1139 (https://ww2.minicircuits.com/case_style/HF1139.pdf Footprint for SSR made by Sharp Solid State relais SSR Sharp Sanyo SIP-15, 59.2mm x 8.0mm bosy size, STK-433E STK-435E STK-436E (http://datasheet.octopart.com/STK430-Sanyo-datasheet-107060.pdf Sanyo SIP-15, 78.0mm x 8.0mm bosy size, STK-437E STK-439E STK-441E STK-443E (http://datasheet.octopart.com/STK430-Sanyo-datasheet-107060.pdf 8-Lead Plastic PSOP, Exposed Die Pad (see Microchip Packaging Specification 00000049BS.pdf QFN Microchip 8E 16 QFN, 44 Pin (http://www.ti.com/lit/ds/symlink/tpa3251.pdf#page=38), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 2 times 0.5 mm² wires, basic insulation, conductor diameter 2.4mm, outer diameter 2.1mm, see http://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F282834%7FC1%7Fpdf%7FEnglish%7FENG_CD_282834_C1.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_MetzConnect THT terminal block RND 205-00243, 4 pins, pitch 3.5mm, size 17.5x7.6mm^2, drill diamater 1.3mm, pad diameter 2.4mm, outer diameter 2.3mm, see http://www.metz-connect.com/de/system/files/productfiles/Datenblatt_310591_RT063xxHBWC_OFF-022684T.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_4Ucon THT Terminal Block WAGO 236-616, 45Degree (cable under 45degree), 5 pins, single row Through hole angled socket strip, 2x39, 1.27mm pitch, double cols (from Kicad 4.0.7), script generated Through hole angled socket strip THT 2x35 2.54mm double row Through hole IDC box header THT 2x24 2.00mm double row surface-mounted straight socket strip, 2x02, 2.00mm pitch, 4.2mm pin length, double rows Through hole angled pin header SMD 1x06 2.00mm single row style2 pin1 right Through hole angled pin header SMD 1x10 2.00mm single row male, vertical entry Harwin LTek Connector, 14 pins, pitch 7.5mm, size 74x15mm^2, drill diamater 1.2mm, pad diameter 3mm, see http://www.produktinfo.conrad.com/datenblaetter/550000-574999/556441-da-01-de-LEITERPLATTENKL__PTSM_0_5__8_2_5_H_THR.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00297 pitch 5.08mm length 7mm diameter 3.3mm Fastron MICC Inductor, Axial series, Axial, Vertical, pin pitch=7.62mm, , length*diameter=5.2*2.7mm^2, , http://www.diodes.com/_files/packages/DO-41%20(Plastic).pdf Diode DO-41_SOD81 series Axial Horizontal pin pitch 25.4mm 2W length 17mm diameter 7.0mm C, Axial series, Axial, Horizontal, pin pitch=25.4mm, , length*diameter=16*7.5mm^2, Fastron, XHBCC, http://www.fastrongroup.com/image-show/26/XHBCC.pdf?type=Complete-DataSheet&productType=series Inductor.

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