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STD PC ENGINE DUO/TURBO DUO RGB 7374 COMPLETE

License: CC-BY-SA 3.0

Mode: Editors' pick

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Update time: 2021-07-06 16:19:37
Creation time: 2016-12-28 03:23:54
Description
This uses the expansion port, top is towards the black plastic 23x3 output connector. Found correct values for the pull up resistor and input capacitors online (3.6M and 82nf) however I dont have a resistor divider network on the output to turn 1.6v into the standard 1.4v p-p. Instead I have a resistor divider on the input. Why not turn the 0.8v input to 0.7v ? That made more sense to me but there is possibly something I am missing... At any rate after ordering and testing if I don't get why I expect ill adjust the output instead.
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ID Name Designator Footprint Quantity
1 Header-Male-2.54_1x1 5V,GND LABLED OVAL SOLDER PAD 120X60 MILL 2
2 SIP1 BO1,GO,RO1,S LABLED OVAL SOLDER PAD 120X60 MILL 4
3 0.1u C1,C2,C3,C4,C5 C0402 5
4 HDR-M-2.54_1x1 J1,J2,J3,J4 LABLED OVAL SOLDER PAD 120X60 MILL 4
5 lpfon JP3 SJ_2S 1
6 200 R1 0603 1
7 1k R2,R3,R4,R5,R6,R7,R8,R9 R0402 8
8 75 R14,R15,R16 0603 3
9 10k R17 R0402 1
10 THS7374IPW U4 TSSOP-14 1

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