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Power supply for battery valve radios
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Return to top of page · Post #: 31 · Written at 10:44:13 PM on 13 April 2017.
	Brad Administrator Location: Naremburn, NSW Member since 15 November 2005 Member #: 1 Postcount: 7302
It was originally called Ultra HD and they should have kept with that. ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ A valve a day keeps the transistor away...

Return to top of page · Post #: 32 · Written at 10:54:11 AM on 14 April 2017.
	Ian Robertson Location: Belrose, NSW Member since 31 December 2015 Member #: 1844 Postcount: 2371
Re need for 4k resolution: I agree that for most material it's overkill. But if you have a 104" LCD (we make 'em) and you are up close (as you are with these touchscreens) it's nice not to be able to see the pixels! What's usually being displayed here is computers, running at the native resolution of the display. It does look impressive. You can fit a hell of a lot on the screen and these things are multi-touch so you can have more than one user at the same time. 4k resolution video material is also impressive, especially up close, it gets quite immersive. They do have 4k res free-to-air in Korea.

Return to top of page · Post #: 33 · Written at 4:36:06 PM on 28 April 2017.
	Ian Robertson Location: Belrose, NSW Member since 31 December 2015 Member #: 1844 Postcount: 2371
Eureka! Recovered the files from the drive in the dead PC! They had already been updated too. I'm ordering 50 sets because there's been a lot of interest. Should be available 2nd or 3rd week of May. I'll ask Brad to put up a picture and the revised schematic. Battery Power Supply Circuit Diagram

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