November 25, 20214 yr The one thing I remember about building simple transistor amplifiers is how hard it was to NOT build an AM radio. | Dave | I've been around for most of my life. There's always a sunset happening somewhere in the world that somebody is enjoying.
November 25, 20214 yr 34 minutes ago, sightseer said: The one thing I remember about building simple transistor amplifiers is how hard it was to NOT build an AM radio. Remember crystal sets with a galena crystal and a cat's whisker for tuning and an aerial that stretched across the back yard? Noel The tires are worn. The shocks are shot. The steering is wobbly. But the engine still runs fine.
November 25, 20214 yr Moderator 3 hours ago, charliearon said: Never forgot the "common base", "common collector", "common emitter" chart! Not-Pointing_iN Pointing-In-Please Fr. Bill AOPA Member: 07141481 AARP Member: 3209010556 Avsim Board of Directors | Avsim Forums Moderator
November 25, 20214 yr You guys are stirring up in me long forgotten memories. Noel The tires are worn. The shocks are shot. The steering is wobbly. But the engine still runs fine.
November 25, 20214 yr Administrators 17 minutes ago, birdguy said: You guys are stirring up in me long forgotten memories. Noel Something to do with Bob, Carol, and doing "something in a big garage! 😄 Charlie AronAVSIM Board of Directors-ADMIN/Moderator-RegistrarJust going to run a Chromebook and not upgrade to a Windows computer. Too many problems with the new Sims! 😱Trying to keep peace and harmony and the will of Landru on the site seems to be a full time job!
November 25, 20214 yr 57 minutes ago, charliearon said: Something to do with Bob, Carol, and doing "something in a big garage! No, capacitors, resistors, inductors, PNPs, NPNs, 7400 series ICs, AND Gates, OR Gates, NAND Gates, NOR Gates, Flipflops. How could I have forgotten so much? It's only been 40 years. Do they still use discrete components or is everything integrated into a pinhead now? Noel Edited November 25, 20214 yr by birdguy The tires are worn. The shocks are shot. The steering is wobbly. But the engine still runs fine.
November 25, 20214 yr 2 hours ago, birdguy said: Remember crystal sets with a galena crystal and a cat's whisker for tuning and an aerial that stretched across the back yard? Noel No, I really don't. sorry. When I was in school, they were teaching design and building of simple transistor amps and at some point I remember building something that had a speaker involved and I kept amplifying some random radio signal. Its really been too long ago for me to remember much about any of it. I couldn't design a discrete component amp if I had to nowadays. but theres always good old ICs ready made...if I didn't have a tremor and bad eyesight, I'd love to play around with that stuff. I remember a signal generator that I built that I used to plug into my stereo and produce the lowest base possible. Nothing like woofers moving so slowly they just push air around. I think Im lucky I didnt burn out the coils as I understand woofer coils air basicalaly air cooled - or were maybe. I once owned a stereo that I had to redesign just to use my equalizer with it. My neighbor at the time was impressed by that. I thought nothing of it at the time. | Dave | I've been around for most of my life. There's always a sunset happening somewhere in the world that somebody is enjoying.
November 25, 20214 yr 49 minutes ago, birdguy said: Do they still use discrete components did you ever work with surface mount components? I alwaays hated trying to replace faulty surface mount capacitors. half the time they'd break if you looked at them wrong. | Dave | I've been around for most of my life. There's always a sunset happening somewhere in the world that somebody is enjoying.
November 25, 20214 yr No, I never worked with surface mount components. I always mounted discrete parts on a circuit board and wire wrapped the pins. Once the circuit was tested and changes made the boards were sent to the fabricators with the circuit design and they photoetched the boards with copper conductors and we soldered the components directly on the boards. We only used discrete components and integrated circuit packages. Noel The tires are worn. The shocks are shot. The steering is wobbly. But the engine still runs fine.
November 27, 20214 yr Author This physicist has some interesting things to say about Veritasiums video.
November 27, 20214 yr One thing's obvious. He knows nothing about about warp speed. Full power Scotty..... Intel 10700K @ 5.1Ghz, Asus Hero Maximus motherboard, Noctua NH-U12A cooler, Corsair Vengeance Pro 32GB 3200 MHz RAM, RTX 2060 Super GPU, Cooler Master HAF 932 Tower, Thermaltake 1000W Toughpower PSU, Windows 10 Professional 64-Bit, 100TB of disk storage. Klaatu barada nickto.
November 28, 20214 yr I once read that photons actually do have mass and if thats true then an observable photon is travelling slower than its pure energy state. and heres where I start to wonder about speed versus time. If there is a fastest time for pure energy (no mass) and with increasing mass comes slower and slower time, then is speed actually a thing? or do we simply have distance and time where distance decreases as time gets faster? all observable matter is like you bumping into a very fast spinning top and you knock it off balance and cause it to wobble. The wobble is observable but the top is only observable when it wobbles. Maybe the 'flow of electrons' is a wobble being propagated down the line.(don't ask what line please) this from a severe layman. take with many grains of salt. It just seems to me that quantum entanglement can be explained if we consider that in a land with mass where time is slower, anything that happens in a land of pure energy would appear instantaneous. Edited November 28, 20214 yr by sightseer | Dave | I've been around for most of my life. There's always a sunset happening somewhere in the world that somebody is enjoying.
November 28, 20214 yr Moderator 1 hour ago, sightseer said: photons actually do have mass Really? I never knew photons were Catholic! 🙌 Fr. Bill AOPA Member: 07141481 AARP Member: 3209010556 Avsim Board of Directors | Avsim Forums Moderator
November 28, 20214 yr 2 hours ago, n4gix said: Really? I never knew photons were Catholic! Of course, Fr. Bill, they guide some newly departed souls to heaven. Anti-matter particles guide some elsewhere. Noel The tires are worn. The shocks are shot. The steering is wobbly. But the engine still runs fine.
November 29, 20214 yr 4 hours ago, n4gix said: Really? I never knew photons were Catholic! They have to be. Otherwise they'd have to walk the Planck. | Dave | I've been around for most of my life. There's always a sunset happening somewhere in the world that somebody is enjoying.
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