If you need to convert composite video or s-video to vga, this is the way to go! I tried several competing products, and this was the best - hands down. It also has a vga input and can switch between sources via remote. All functions are accessed via on-screen menu with the remote or buttons on the device. Picture quality is very good and can be adjusted for brightness, contrast, tint and sharpness. Most video sources can be upscaled up to 1920x1080 to match the native resolution of your display device.
Some notes on the original Galaksija design: the original uses a RFmodulator so it doesn't need the output amplifier. Also the voltage levelsof the composite video are adjusted to those needed by the modulator andnot to those needed by the composite video input of the modern TV set. Theoriginal also lacks transistors because it uses the open-collector outputsprovided by chips in the 74LS series.
"Composite" video (not to be confused with "component" video) was the first analog baseband video standard seen in home theater applications, and is basically just NTSC standard-definition video, without RF modulation. Composite video is carried on just a single cable, usually terminated with an RCA plug but sometimes with a BNC or F-connector, and usually color-coded yellow on device inputs and outputs. This single cable carries video only, and so it is always necessary to route audio alongside the video. Whenever a better analog or digital video standard is available for use, it's better to go with that, be it s-video, component video, RGB, DVI or HDMI--but for some applications, notably the standard-definition VHS tape deck, composite video is still the best way to get baseband signals in and out.