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| What analog projects are you after in 2022/23? |
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| Infraviolet:
There are interesting challenges to be had, for those who have experience with the likes of arduino and microcontrollers, in looking to create systems with the same functionality solely from analogue ICs (op amps, timers, comparators...). One can perhaps allow some simple digital gate ICs too. I've been working on a few such things, sticking to a rule of "generic" components only (things which multiple manufacturers make very similar options for). Think of something you'd apply a microcontrolelr too, or one of the functionalities involved in a larger microcontrolelr project, and try to offload it entirely to working on analogue ICs, I guess you'd have further considerations to include if you went right back to the individual transistors level. |
| tggzzz:
Better, arguably, to use analogue components to achieve things that can't be achieved with digital systems. Or to start from the understanding that the only digital circuits you are likely to encounter are femtoamp and photon counting circuits - and progress from there. (Yes, so-called digital circuits are analogue circuits that interpret voltage/current waveforms as digital signals) |
| jonpaul:
Rebonjour RJ Hyward, et tous, Appreciate your questions: a few clarificarions.... This reconstruction is the 6 level Quantizer, the very first analog to digital converter, invented at Bell Laboratoires 1942 in New York, one of 72 used in the SIGSALY top secret speech scrambling system. See the NSA, NCM and cryptomuseum for full history and operation of SIGSALY, the origin of today's world of digital media... all mobiles, videos. music. The reconstruction has a dynamic microphone transformer coupled preamplifier with 6SL7, a voltage doubler detector and 5 x2050 WW2 argon filled thyratron tubes as comparateurs. These 5 tubes form a flash converter from a log law resistor ladder. The output digital lights 5 neon bulbs. Sampling rate is at mains zero, 100 or . 120 Hz as thyratron B+ is 350 rectified, unfiltered SC. All details in the IEEE SPECTRUM article or February 2019. Enjoy! Your thoughts send comments are appreciated! From Paris 6eme arrondissement Jon |
| BrianHG:
This one is a beauty: https://www.eevblog.com/forum/projects/oscilloscope-pong-for-1-or-2-players/ Homepage: https://www.glensstuff.com/pong/pong.htm 100% discrete analog computing... I don't know why, but the youtube video / channel was deleted... I guess if you want to experience this next-level implementation, you will need to build one yourself. All schematics are available in the thread. If you want a video color raster version with score board, go to this page: https://www.eevblog.com/forum/projects/oscilloscope-pong-for-1-or-2-players/500/ Homepage: https://www.glensstuff.com/videopong/videopong.htm Many other analog computing projects from GK: https://www.glensstuff.com/index.htm#5 |
| _Wim_:
A DIY version of one of these is a nice "analog" project for 2023: https://www.thinksrs.com/products/sr560.htm https://www.thinksrs.com/products/sr570.html Should keep you busy ;) |
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