
Entrex Trapezoid Processor Board v37
ForgottenMachines/Entrex
The technologies documented here will include all like-kind systems manufactured by Nixdorf, Redifon, ROCC & Mera, all originally designed by Entrex Inc, Burlington, MA USA.

HVSC schematics development
HVSC5 is an open-source printed circuit board by munz74, from the munz74/HVSC_KICAD repository on GitHub. It is a 2-layer board of 246 × 152 mm with 374 parts on 305 nets, routed with 2,217 tracks and 546 vias.
It is built around the DSPIC33EV256GM002-I/SO, DPBW06F-12 and HFBR-1414Z, with the HFBR-2412Z, MAX232N and SN75452BD among its other parts. Its parts include 187 resistors, 74 capacitors, 29 diodes, 29 connectors and 23 ICs. It belongs with the PIC boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 132 | 10k | Resistors_SMD:R_1206_HandSoldering | R100, R101, R102, R103, R104, R105, R106, R107, R108, R109, R110, R111, R112, R113, R114, R115 +116 |
| 34 | 0.1uF | Capacitors_SMD:C_0805_HandSoldering | C3, C11, C13, C14, C15, C16, C17, C20, C21, C22, C23, C24, C25, C26, C27, C31 +18 |
| 19 | 10uF | USER:C_1812_HandSoldering_Polar | C1, C2, C10, C12, C18, C19, C28, C32, C34, C36, C39, C40, C41, C43, C45, C50 +3 |
| 19 | test | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.00mm | J1, J2, J11, J12, J13, J14, J15, J16, J21, J22, J23, J24, J26, J27, J28, J29 +3 |
| 14 | 10k | Resistors_SMD:R_0805_HandSoldering | R4, R5, R6, R7, R8, R13, R19, R150, R151, R152, R153, R154, R155, R156 |
| 8 | 250 | Resistors_SMD:R_0805_HandSoldering | R164, R165, R166, R167, R176, R177, R179, R180 |
| 8 | 330 | Resistors_SMD:R_0805_HandSoldering | R9, R10, R17, R18, R21, R149, R157, R158 |
| 8 | CONN_01X01 | Mounting_Holes:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4, H5, H6, H7, H8 |
| 8 | LED | LEDs:LED_D5.0mm | D4, D5, D6, D7, D9, D12, D17, D27 |
| 7 | 20uF | Capacitors_SMD:C_1210_HandSoldering | C65, C68, C69, C70, C71, C72, C73 |
| 6 | ES3J | USER:D_SMC_Handsoldering | D13, D14, D21, D22, D23, D24 |
| 6 | P7002SCLRP | Diodes_SMD:D_SMA-SMB_Universal_Handsoldering | X1, X2, X3, X4, X5, X6 |
| 5 | 1k | Resistors_SMD:R_0805_HandSoldering | R11, R147, R148, R159, R160 |
| 4 | 0.47uF | Capacitors_SMD:C_1210_HandSoldering | C60, C61, C62, C63 |
| 4 | 150k | Resistors_THT:R_Axial_Power_L20.0mm_W6.4mm_P22.40mm | R32, R182, R186, R187 |
| 4 | 20pF | Capacitors_SMD:C_0805_HandSoldering | C6, C8, C29, C30 |
| 4 | 500 | Resistors_SMD:R_0805_HandSoldering | R168, R169, R178, R181 |
| 4 | SMDJ11CA | Diodes_SMD:D_SMC_Handsoldering | D8, D15, D28, D29 |
| 3 | 50k | Potentiometers:Potentiometer_Trimmer_Bourns_3296W | RV3, RV5, RV6 |
| 3 | 561 | Resistors_SMD:R_0805_HandSoldering | R1, R2, R3 |
| 3 | ANA4522 | USER:SOIC-8_3.9x4.9mm_Pitch1.27mm | U18, U21, U22 |
| 3 | AQV258 | Housings_DIP:DIP-6_W7.62mm_Socket | U19, U20, U23 |
| 3 | LED_ALT | LEDs:LED_0805_HandSoldering | D1, D2, D3 |
| 3 | SMDJ10 | Diodes_SMD:D_SMC_Handsoldering | D18, D19, D20 |
| 3 | SMDJ6.5CA | Diodes_SMD:D_SMC_Handsoldering | D16, D25, D26 |
| 2 | 100 | Resistors_SMD:R_0805_HandSoldering | R163, R185 |
| 2 | 10uF | Capacitors_SMD:C_1210_HandSoldering | C55, C56 |
| 2 | 300k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R161, R162 |
| 2 | 51 | Resistors_SMD:R_0805_HandSoldering | R183, R184 |
| 2 | 53nF | Capacitors_SMD:C_1210_HandSoldering | C58, C59 |
| 2 | CONN_01X03 | USER:M53259-3 | J10, J19 |
| 2 | CONN_01X05 | USER:M53259-5 | J7, J25 |
| 2 | Fuse | Fuse_Holders_and_Fuses:Fuseholder6x32_Horiz_Open_Schurter0031-8002 | F2, F3 |
| 2 | TLV431DBZ | USER:SOT-23W_Handsoldering(LM431) | D10, D11 |
| 1 | 100k | Potentiometers:Potentiometer_Trimmer_Bourns_3296W | RV2 |
| 1 | 15pF | Capacitors_SMD:C_0805_HandSoldering | C37 |
| 1 | 16M | Crystals:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 1N4744 | Diodes_SMD:D_SMA-SMB_Universal_Handsoldering | Z1 |
| 1 | 22uF | Capacitors_SMD:C_1210_HandSoldering | C64 |
| 1 | 25k | Potentiometers:Potentiometer_Trimmer_Bourns_3296W | RV4 |
| 1 | 2k | Potentiometers:Potentiometer_Trimmer_Bourns_3296W | RV1 |
| 1 | 4.7K | Resistors_THT:R_Array_SIP5 | RN1 |
| 1 | 470 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R16 |
| 1 | 5.6k | Resistors_SMD:R_0805_HandSoldering | R20 |
| 1 | 500 | Potentiometers:Potentiometer_Trimmer_Bourns_3296W | RV7 |
| 1 | 560 | Resistors_SMD:R_0805_HandSoldering | R15 |
| 1 | 74LS04 | Housings_DIP:DIP-14_W7.62mm_Socket | U4 |
| 1 | 8M | Crystals:Crystal_HC49-4H_Vertical | Y2 |
| 1 | AD7175-8 | USER:LFCSP-40-1EP_long | U1 |
| 1 | ADR445 | USER:SOIC-8_3.9x4.9mm_Pitch1.27mm | U3 |
| 1 | ADR4520 | USER:SOIC-8_3.9x4.9mm_Pitch1.27mm | U2 |
| 1 | CONN_01X03 | USER:BR762-3 | J18 |
| 1 | CONN_01X05 | Pin_Headers:Pin_Header_Straight_1x05_Pitch2.54mm | J5 |
| 1 | CONN_01X08 | USER:BR762-8 | J20 |
| 1 | CONN_COAXIAL | Connectors_Molex:Molex_KK-6410-02_02x2.54mm_Straight | J17 |
| 1 | CONN_COAXIAL | Connectors:bnc-ci | J8 |
| 1 | DB9_Female_MountingHoles | w_conn_d-sub:DB_9F | J9 |
| 1 | DPBW06 | USER:DCDC-Conv_SPBW06 | U12 |
| 1 | FOD0721 | USER:SOIC-8_3.9x4.9mm_Pitch1.27mm | U11 |
| 1 | Ferrite_Bead | Inductors_SMD:L_1806_Handsoldering | L1 |
| 1 | HFBR-1414 | USER:HFBR-1414 | U9 |
| 1 | HFBR-2412 | USER:HFBR-1414 | U8 |
| 1 | INA128 | Housings_DIP:DIP-8_W7.62mm_Socket | U15 |
| 1 | LT1118-5V | USER:SOT-223_LT1118 | U10 |
| 1 | LTC2644 | USER:MSOP-12-1EP_3x4mm_Pitch0.65mm | U13 |
| 1 | MAX232 | Housings_DIP:DIP-16_W7.62mm | U7 |
| 1 | Polyfuse | Fuse_Holders_and_Fuses:Fuse_CB61F | F1 |
| 1 | SN75452 | Housings_DIP:DIP-8_W7.62mm | U6 |
| 1 | SW_DPDT_x2 | USER:SW_E-Switch_EG2219_DPDT | SW3 |
| 1 | SW_Push | USER:SW_Tactile_SPST_PTS645Vx58-2 | SW1 |
| 1 | TLP176A | USER:SO-4_4.4x4.3mm_Pitch2.54mm_Hand_Soldering | U17 |
| 1 | Varistor | Varistors:RV_Disc_D12_W4_P7.5 | V1 |
| 1 | XR2206 | Housings_DIP:DIP-16_W7.62mm_Socket | U16 |
| 1 | dsPIC33EV256GM002 | USER:SSOP-28_5.3x10.2mm_Pitch0.65mm | U5 |
| 1 | uA7805 | TO_SOT_Packages_SMD:TO-263-2 | U14 |

ForgottenMachines/Entrex
The technologies documented here will include all like-kind systems manufactured by Nixdorf, Redifon, ROCC & Mera, all originally designed by Entrex Inc, Burlington, MA USA.

oats-center/avena-rs
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sgenomics/pcbs
There are my personal PCBs... contact me for licensing information.




It measures 246 × 152 mm and has 2 copper layers, 1.6 mm thick.
374 parts, built around the DSPIC33EV256GM002-I/SO, DPBW06F-12, HFBR-1414Z and HFBR-2412Z. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the munz74/HVSC_KICAD repository on GitHub, at the commit this page was made from: the board is HVSC5.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask munz74 before reusing the design.