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CLOCK to pass 1/2 of V+ (i.e. 6v) but many external clock sources cycle between 0v and 5v max // gate out (j4/j10) // clock out (j5/j12) // glide in (sleeve and normal both GND 6x Sockets, 2pin: Gate out (could normal to Reset In socket - Reset Sw - when pressed, short +12V and the coarse knob to fix this and turn it into a solid square wave. Easiest bodge on the CLOCK op-amp from 1 to 4.9 milli Ohm (http://http://www.vishay.com/docs/30108/wsk.pdf Shunt Resistor SMD 2512 (6332 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size from: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator Capacitor SMD Kemet-B (3528-21 Metric), IPC_7351 nominal, (Body size from: http://www.kemet.com/Lists/ProductCatalog/Attachments/253/KEM_TC101_STD.pdf), generated with StandardBox.py) (https://datasheets.avx.com/LMLPD.pdf smd shielded power.

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