MC1466L. Where'd they go? - Page 1
Forum section: electronics / projects

author: Jebnor
author_rank: Regular Contributor
timestamp: July 21, 2013, 04:25:38 pm
content: I have a bunch of MC1466L from when I was a kid (about 10 or 12yrs old.) Looking at the datasheet now, I can only surmise that I took apart some pretty expensive kit.The MC1466L seems to be the ceramic version of a "Precision wide range voltage and current regulator". It look really cool. What happend to them? I can't find new ones anywhere. I'm looking to buy any, I'm just curious as to why they are no longer available?I also have a bunch of LM723CN. Are those the class of chip that surpassed the MC1466L?

author: free_electron
author_rank: Super Contributor
timestamp: July 21, 2013, 04:46:39 pm
content: both of them are in the folder 'old crap'

author: Jebnor
author_rank: Regular Contributor
timestamp: July 21, 2013, 04:50:16 pm
content: Quote from: free_electron on July 21, 2013, 04:46:39 pmGood to know. Equivalant to what today?

author: SeanB
author_rank: Super Contributor
timestamp: July 21, 2013, 06:18:00 pm
content: LM317 does pretty much all the old one did, but better and with fewer external components required.

author: c4757p
author_rank: Super Contributor
timestamp: July 21, 2013, 06:21:21 pm
content: I know this doesn't bode well for my beloved MC34063, but the vast majority of "MC" chips are either in the "old crap" folder or the "severely obsolete shit" folder.

author: SeanB
author_rank: Super Contributor
timestamp: July 21, 2013, 06:24:48 pm
content: MC34063 will not go obsolete soon, way too many clones of it around, and so common as the converter chip in all car phone chargers.

author: Bloch
author_rank: Unknown
timestamp: July 21, 2013, 06:56:55 pm
content: Quote from: free_electron on July 21, 2013, 04:46:39 pmI dont think i did get the memo about the LM723.If you need a Linear power supply let say 3-30volt 15amps both ajustible. That IC is easier / better today ?

author: c4757p
author_rank: Super Contributor
timestamp: July 21, 2013, 07:08:43 pm
content: Quote from: Bloch on July 21, 2013, 06:56:55 pm15Alinear? I'm going to go out on a limb and say "you don't".... And if you do, you've got one hell of a project on your hands, it shouldn't be too much more work to do it with an op amp.

author: c4757p
author_rank: Super Contributor
timestamp: July 21, 2013, 07:13:35 pm
content: Quote from: SeanB on July 21, 2013, 06:24:48 pmI wish there were an equally cheap and convenient alternative with slightly better behavior. True PWM would be nice (with the ability for the duty cycle to drop very low - 34063 doesn't perform well under very light load), as well as perhaps a more efficient saturating MOSFET output. I know there are hundreds of chips like that, but none of them are as cheap...

author: free_electron
author_rank: Super Contributor
timestamp: July 22, 2013, 05:08:07 am
content: Quote from: Bloch on July 21, 2013, 06:56:55 pmOpen up any commerciall power supply from manufacturers like Agilent, Xantrx, Sorensen, TTI , connor or other known instrument makers. Good luck finding an lm723....-crickets- ....You can make far better regulation systems than that old clunker.Same for the mc36xxx. Can we widlarize that and bury its ashes please ?Efficiency of a dead cow , switches slower than my grandma can knit and has extreme suicidal tendencies for various reasons.That chip is crap. No short circuit , switches slo, lots of dissipation, is unstavle in various co ditions.Grab a simpleswitcher or a switcher product from Ti, maxim, linear or ST.