Edoardo kinmami
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Description
RGBI CGA to Analog RGB video card converter flicker fixer colour correction
This board converts digital RGB to analogue RGB.
Compatible with:
- Commodore 128
- NEC PC-6001mkII
- Fujitsu Micro 7 (FM-7)
- IBM 5160 (XT), IBM CGA card, NEC PC-TV354
- [further machines to be tested...]
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]
The main features:
- 8 and 16 colours
- dark yellow / brown colour correction and intensity (hue) management
- buffered sync signals
- polarity selection of HSYNC and CSYNC (normal or inverted) with jumpers
- possibility to output Sync-On-Green (positive or negative) with jumpers
- USB-C type power supply with main switch, over- voltage protection and noise filter
- does not require trimming
- THS7316 video amp for a perfect RGB equalization and filtering (100% jail bars removal): crispy and clean image, flicker fix
- KEY/PWR VGA pin 9: optional 5V/200mA bias available on the output port for JP-21(scart) and EDID EEPROM chip on some applications
- compact design and minimal BOM list
- standard DE-9M (input, RGBI/CGA) and DE-15F (output, VGA) ports
- option to plug DIN connectors (or any kind of connector) as input and output
Note:
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.
Video cables are suggested to fit an EMI / RF noise filter (toroid/ferrite on each end).
Schematic and Layout
Aug 31,2022
5,455 views
RGBI CGA to Analog RGB video card converter flicker fixer colour correction
The solution to convert digital RGB to analogue RGB with dark yellow / brown correction, buffered sync & polarity selection, sync-on-green
5455
12
11
8.50 (1)
Published: Aug 31,2022
BOM(Bill of materials)
Centroid file
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File Last Updated: 2023/12/02 (GMT+8)
File update record
2023-12-0222:42:46
Other files for Assembly are updated.
2023-05-2411:43:39
Centroid file is updated.
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8.50
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