Edoardo kinmami
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Description
Commodore Amiga DB23 RGB VGA External Video Buffer (V6) Compatible with GBS-8200 8220 OSSC No Jail bars
External RGB video adapter from DB-23 female (input) to DE-15F (output, VGA) for Amiga computers.
Compatible with GBS-82xx and OSSC.
DB-23 female connectors are available at https://shareconn.aliexpress.com/store/1102063255?spm=a2g0o.detail.1000007.1.13df5ecbuQuVyp
3D printable Enclosure designed by Ben Gleeson,
https://www.thingiverse.com/thing:6528063
and Harald Sakshaug.
https://www.thingiverse.com/thing:6587426
Main features:
- Active buffer for H- and V- sync, with limiting resistors for overload protection.
- THS7316 video amplifier for perfect RGB equalization and filtering, ensuring 100% removal of jail bars.
- Jumper for selection of H- sync (default) or Composite sync, for example, for GBS-82xx, OSSC (VGA pin 13).
- KEY/PWR available on VGA pin 9: optional 5V/100mA provided on the output port for JP-21 (Japanese SCART) cables and EDID EEPROM chip.
- Improved shielding and reduced ground noise.
- Compact design with a minimal bill of materials list.
- Size: 32 x 32 mm.
Note:
- PCB Thickness should be 1.2 mm.
- This is NOT a scan doubler.
- It fixes the flicker but keeps the original scan frequency unchanged.
- Anyhow the adaptor works when connected to 15KHz video monitors such as BenQ, etc.
- The "Shield" test point should be soldered to the DB-23 metal chassis using a thick wire.
- VGA cable is suggested to fit an EMI / RF noise filter (toroid/ferrite) on each end.
- Default setup: R2, R3 47 ohm / R10 not mounted / jumper closed to HSYNC
A new version, now available here, includes an optional scan lines generator for a vintage graphic effect.
Tested with:
- BenQ LCD Monitor G2420HD (ET-0027-B) October 2009 Rev. 00-132-BA [VGA]
- MITSUBISHI LCD Monitor RDT1955 [VGA]
- UGREEN 11614 VGA Extension Cable [length 6 ft / 183 cm]
- Sony Trinitron CRT Monitor PVM-9045Q [RGB + SYNC]
- RS 790-2805 Straight 75Ω RF Adapter BNC Plug to RCA Sockets [250MHz]
- GBS-8200 and 8220
- OSSC
- SukkoPera's Rämixx500, Commodore Amiga 500/+, 600, 1000, CDTV, CD32, 2000, 1200, 4000
Schematic and Layout
Nov 19,2022
6,685 views
Commodore Amiga DB23 RGB VGA External Video Buffer (V6) Compatible with GBS-8200 8220 OSSC No Jail bars
DB23 to VGA Monitor with buffered/protected digital sync lines and THS7316 video amp for 100% noise free RGB. GBS-82xx OSSC compatible
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10.00 (4)
Published: Nov 19,2022
BOM(Bill of materials)
Centroid file
Other files for Assembly
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File Last Updated: 2024/05/31 (GMT+8)
File update record
2024-05-3120:10:34
Other files for Assembly are updated.
2024-05-3120:10:34
Centroid file is updated.
2024-05-3120:10:34
Parts List (BOM) is updated.
2024-05-3120:10:34
Gerber file is updated.
2023-07-1313:58:52
Parts List (BOM) is updated.
2023-04-2615:42:58
Other files for Assembly are updated.
2023-04-2615:42:58
Parts List (BOM) is updated.
2023-04-2615:32:25
Gerber file is updated.
2023-01-0713:05:46
Centroid file is updated.
2022-11-1921:26:02
Parts List (BOM) is updated.
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