Is there a really, really detailed schematic with guaranteed output voltage limits versus sink current for the LM324? Most look like this:
Obviously, page 8 top left and the schematic show that one can get to around 700mV above the negative rail at 1mA, one BE drop of Q13 plus the saturation voltage (or close to it) of Q12. But no "hard" data anywhere.
-- Regards, Joerg http://www.analogconsultants.com/
You don't like page 4 ?:-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
America: Land of the Free, Because of the Brave
Nope, they only give one value there, how much current it is guaranteed to drive when at 2V above the rail (10mA). Then uA value stated for
200mV isn't too useful, it just confirms that the current source outlined in the schematic actually made it into production ;-) 10mA is pretty much at the point where the output device loses it. Not a terribly useful piece of information.-- Regards, Joerg http://www.analogconsultants.com/
WHY are you using an LM324... CHEAPSKATE ?:-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
America: Land of the Free, Because of the Brave
Umm, yes, that would be correct. Also the sheer number of suppliers, no single-sourced parts around here unless there really is a compelling reason. And usually there isn't a compelling reason.
BTW my Barricade needed a few power cycles over the last week. Not good. What did you buy to replace yours? Tried a firmware upgrade before? Of course the real cheapskate fix would be to plug it into a timer that turns it off for an hour after midnight :-)
Unfortunately I am going to need that printer port in there ...
-- Regards, Joerg http://www.analogconsultants.com/
Thanks. The electrolytics in the power supply inside the router? That's kind of disappointing. Those routers used to be on the pricier side, metal case, no wall wart and all that.
-- Regards, Joerg http://www.analogconsultants.com/
Yes, Replace the caps. I had some issues with my not to long ago.
-- "I'd rather have a bottle in front of me than a frontal lobotomy" http://webpages.charter.net/jamie_5"
All LM324's are not made the same. Remember my blacklisting Motorola?
Yep, Mine got like that more and more often over time.
Linksys BEFSR81
Yes. It was current, yet erratic :-(
Yep.
Linksys makes a printer switch but, since the printers were wearing out too, I bought printers with network ports... hp LaserJet 2015dn and hp OfficeJet Pro K850.
We also have a Dymo LabelWriter 400, but it's local to my wife's machine.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
America: Land of the Free, Because of the Brave
I'm on my second unit. the first one lasted about 8 hours. I unplugged it from the service because a severe storm was coming in and I had just got cable internet.. I went to work, my step son got home and thought he was mighty smart!. I had other adapters there in the same area unplugged. He didn't bother to look or care if they were correct of not, all he wanted was the internet.. So, my first unit was a 5 volt DC wallwart unit. I had a 12 AC wall wart there unplugged. so you can guess which one went into the router. Of course, it was all my fault which it usually is. I can say with confidence, that boy does not share my gene pool.
The one I have now uses a 12 volt AC wallwart and the PSU is internal with electro caps .. Mine dried up and lost value... Caused unstable supply.
-- "I'd rather have a bottle in front of me than a frontal lobotomy" http://webpages.charter.net/jamie_5"
One of the milkman's ?
Graham
I don't remember. What did their LM324 do to you?
I've read that some of the heat sinks in there are on the skimpy side, at least I'll open it before I give it up. Mostly because of that LPT port.
I've got a Cisco wireless here (I believe same brand as Linksys) that also has a few CAT-5 ports so I can use it as backup should the SMC croak on a busy workday. I try to have a backup for pretty much anything essential.
Some firmwares supposedly could choke up when incomplete or deliberately mutilated packets arrived, requiring a power cycle. At least that's what I've read.
Got one of those as well (Brother MFC). Also has fax, copier and scanner in there. The sheet feeder is really nice. Every year I had to copy a huge stack of papers before giving them to my CPA, in case they get lost. Now it's really easy: Put stack in MFC, hit scan to file button on PC, go do something else. No waste of paper and 15 minutes later it's all in one PDF file. Sweet.
We still write labels by hand, or I print, glue to blank label, then stick.
-- Regards, Joerg http://www.analogconsultants.com/
Well as I said, "Step son", He's more like his mother and I won't go any future there.
-- "I'd rather have a bottle in front of me than a frontal lobotomy" http://webpages.charter.net/jamie_5"
That must have been anotehr router. Mine has a SMPS built-in.
-- Regards, Joerg http://www.analogconsultants.com/
Similar here except it has 7 LAN ports. But no wall wart. Also, the whole metal box remains remarkably cool.
-- Regards, Joerg http://www.analogconsultants.com/
Really, they made like 4 different units supporting the same external options. Mine has 4 Eports and 1 WAN, 1 printer and 1 serial port for external back up modem
-- http://webpages.charter.net/jamie_5"
I would still considered looking at the caps. they are a common problem with equipment that starts to slowly develope problems.
Btw, you're correct, we don't have the same one. oh well.
-- http://webpages.charter.net/jamie_5"
Extreme distortion. Reeked havoc with active filters.
We have ~1000 Girl Scouts... we're neighborhood level now, and I'm the neighborhood cookie manager ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
America: Land of the Free, Because of the Brave
the
It reeked? SCNR ;-)
But yes, I would never use them for anything high fidelity. Only for mundane stuff and since most circuits somehow end up in that category I am probably responsible for a grand total of a large truckload in sales of LM324.
That sure explains the label printer.
-- Regards, Joerg http://www.analogconsultants.com/
[snip]
Sure explains why NOT to volunteer ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
America: Land of the Free, Because of the Brave
If your wife wasn't busy with her volunteer work she might decide to spend more time keeping you in line! :(
-- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida
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