In Reply to: RE: From a practical standpoint... posted by Dynobot on July 15, 2012 at 09:00:49:
Function and mechanism are different concepts.
Converting a digital pulse train (current) to an analog signal (voltage) can be done by active or passive components. If the components are active they can be configured as op-amps or in other topologies. Incidentally, there are such things as op-amps made out of vacuum tubes. Back in 1961 I worked with an analog computer that had a few dozen op-amps, all made out of tubes.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
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Follow Ups
- RE: From a practical standpoint... - Tony Lauck 09:27:13 07/15/12 (9)
- The Philbrick model K2-W, the first commercial vacuum tube operational amplifier back in 1952. - cfb 12:09:30 07/15/12 (1)
- Thanks for the link! nt - Tony Lauck 12:29:46 07/15/12 (0)
- RE: From a practical standpoint... - Dynobot 09:32:06 07/15/12 (6)
- RE: From a practical standpoint... - John Swenson 17:49:34 07/16/12 (0)
- Keep in mind... - mls-stl 10:21:19 07/15/12 (4)
- 1961Vacuum Tube Op-Amp - Tony Lauck 12:23:16 07/15/12 (2)
- RE: 1961Vacuum Tube Op-Amp - rick_m 17:19:13 07/15/12 (1)
- RE: 1961Vacuum Tube Op-Amp - Tony Lauck 17:44:00 07/15/12 (0)
- Got it...thanks!..nt - Dynobot 10:23:34 07/15/12 (0)