GraniteM@lemmy.world to Vintage@lemmy.world · 1 year ago"New 1957 Crosley, World's first fully automatic TV," September 10 1956i.imgur.comimagemessage-square12fedilinkarrow-up161arrow-down10file-text
arrow-up161arrow-down1image"New 1957 Crosley, World's first fully automatic TV," September 10 1956i.imgur.comGraniteM@lemmy.world to Vintage@lemmy.world · 1 year agomessage-square12fedilinkfile-text
minus-squareSubArcticTundra@lemmy.mllinkfedilinkarrow-up4·1 year agoHow does the circuitry behind №2, 3, and 5 work?
minus-squarejoshLaserbeam@sh.itjust.workslinkfedilinkarrow-up2·1 year agoI don’t think number 3 is circuitry. From the description it is probably a big metal shield around the tuning circuitry.
minus-squareespentan@lemmy.worldlinkfedilinkarrow-up2·1 year ago“15,000 times per second”, yeah, right. With a refresh rate of 60Hz, even if possible it would be pointless. All of those sound like marketing gibberish. #5 sounds like surge protection, so there might be something to that one.
minus-squarelobsticle 🦞@lemmy.worldlinkfedilinkarrow-up6·1 year agoThe horizontal refresh rate of NTSC was 15735 Hz, so the adjustments are likely tied to that particular signal. Definitely marketing fluff for sure, but backed up by the tech.
minus-squarelemming741@lemmy.worldlinkfedilinkarrow-up1·1 year agohttps://en.m.wikipedia.org/wiki/Automatic_frequency_control https://en.m.wikipedia.org/wiki/Automatic_gain_control
How does the circuitry behind №2, 3, and 5 work?
I don’t think number 3 is circuitry. From the description it is probably a big metal shield around the tuning circuitry.
“15,000 times per second”, yeah, right. With a refresh rate of 60Hz, even if possible it would be pointless.
All of those sound like marketing gibberish. #5 sounds like surge protection, so there might be something to that one.
The horizontal refresh rate of NTSC was 15735 Hz, so the adjustments are likely tied to that particular signal. Definitely marketing fluff for sure, but backed up by the tech.
https://en.m.wikipedia.org/wiki/Automatic_frequency_control
https://en.m.wikipedia.org/wiki/Automatic_gain_control