humeur Posted February 10, 2022 Share Posted February 10, 2022 (edited) Hello, I am looking for information on the intensity provided by the power supply. If you have values. Thank Edited February 10, 2022 by humeur Quote Link to comment Share on other sites More sharing options...
apersson850 Posted February 10, 2022 Share Posted February 10, 2022 Do you mean power? Quote Link to comment Share on other sites More sharing options...
SkyPilot Posted February 10, 2022 Share Posted February 10, 2022 23 minutes ago, apersson850 said: Do you mean power? He lives in France. Could a translator have changed electromotive force into intensity? 1 Quote Link to comment Share on other sites More sharing options...
humeur Posted February 10, 2022 Author Share Posted February 10, 2022 I am looking for intensity in Ampere No power power is P=U*I electromotive in french is électromotrice it's more for engines is not Ampere 1 Quote Link to comment Share on other sites More sharing options...
Tuxon86 Posted February 10, 2022 Share Posted February 10, 2022 5 minutes ago, humeur said: I am looking for intensity in Ampere No power power is P=U*I electromotive in french is électromotrice it's more for engines is not Ampere You want to know the maximum amp rating of the PSU? Since Amp are pulled it depends on what is presently plugged into the PEB and drawing power. If you're planning a PSU replacement, there are many possibilities. Quote Link to comment Share on other sites More sharing options...
+TheBF Posted February 10, 2022 Share Posted February 10, 2022 8 minutes ago, humeur said: I am looking for intensity in Ampere No power power is P=U*I electromotive in french is électromotrice it's more for engines is not Ampere En Anglais on dit "current", measurer en Ampere. 1 1 Quote Link to comment Share on other sites More sharing options...
Tuxon86 Posted February 10, 2022 Share Posted February 10, 2022 8 minutes ago, TheBF said: En Anglais on dit "current", measurer en Ampere. Effectivement. J'aurais du lui répondre en français... 1 Quote Link to comment Share on other sites More sharing options...
humeur Posted February 10, 2022 Author Share Posted February 10, 2022 Yes that's just the max I am looking for in case any of you have done a measurement And thank for translate Intensité in french to current in english. 1 Quote Link to comment Share on other sites More sharing options...
humeur Posted February 10, 2022 Author Share Posted February 10, 2022 2 minutes ago, Tuxon86 said: Effectivement. J'aurais du lui répondre en français... Je sais que je suis pas doué en anglais. merci pour la traduction Quote Link to comment Share on other sites More sharing options...
apersson850 Posted February 10, 2022 Share Posted February 10, 2022 OK, current then. There is more than one voltage, so there is more than one max current. Any particular, or do you need all? For what purpose are you asking? Quote Link to comment Share on other sites More sharing options...
Stuart Posted February 10, 2022 Share Posted February 10, 2022 (edited) The rectifier diodes for the +8V supply are rated at 3A. The rectifier diodes for the +/-16V supplies are rated at 1A. But the transformer may not be capable of supplying this amount of power. The +12V regulator is rated at 1A. The +5V regulator is rated at 1A. The PEB spec gives the following guide for the maximum load a card should present: -- 250mA on the +16V supply. -- 500mA on the +8V supply. -- 30mA on the -16V supply. Edited February 10, 2022 by Stuart 2 1 Quote Link to comment Share on other sites More sharing options...
+TheBF Posted February 10, 2022 Share Posted February 10, 2022 2 hours ago, humeur said: Je sais que je suis pas doué en anglais. merci pour la traduction Je vous empris M. (et je ne suis pas tellement fluent en Francais) 1 Quote Link to comment Share on other sites More sharing options...
humeur Posted February 10, 2022 Author Share Posted February 10, 2022 35 minutes ago, apersson850 said: OK, current then. There is more than one voltage, so there is more than one max current. Any particular, or do you need all? For what purpose are you asking? I just wanted to know the characteristics of the PEBOX power supply. Quote Link to comment Share on other sites More sharing options...
humeur Posted February 10, 2022 Author Share Posted February 10, 2022 1 hour ago, Stuart said: The rectifier diodes for the +8V supply are rated at 3A. The rectifier diodes for the +/-16V supplies are rated at 1A. But the transformer may not be capable of supplying this amount of power. The +12V regulator is rated at 1A. The +5V regulator is rated at 1A. The PEB spec gives the following guide for the maximum load a card should present: -- 250mA on the +16V supply. -- 500mA on the +8V supply. -- 30mA on the -16V supply. Thank I'm surprised I thought more. 1 Quote Link to comment Share on other sites More sharing options...
humeur Posted February 10, 2022 Author Share Posted February 10, 2022 18 minutes ago, TheBF said: Je vous empris M. (et je ne suis pas tellement fluent en Francais) A mon tour " je vous en pris" French is not easy. Jean Louis. Quote Link to comment Share on other sites More sharing options...
+TheBF Posted February 10, 2022 Share Posted February 10, 2022 Just now, humeur said: A mon tour " je vous en pris" French is not easy. Jean Louis. Like I said. Merci. 1 Quote Link to comment Share on other sites More sharing options...
apersson850 Posted February 10, 2022 Share Posted February 10, 2022 1 hour ago, humeur said: Thank I'm surprised I thought more. There could be eight cards at the same time. Quote Link to comment Share on other sites More sharing options...
Ed in SoDak Posted February 10, 2022 Share Posted February 10, 2022 (edited) With the usual TI Flex, 32k, RS232 and Floppy Controller, the PEB 12v supply would sag a bit if I also had two half-height floppy drives in there. Had to be low-power drives to be reliable with two, so I just have a single drive in there nowadays. Don't want any smoldering in my PEB! Edited February 10, 2022 by Ed in SoDak 1 Quote Link to comment Share on other sites More sharing options...
RickyDean Posted February 11, 2022 Share Posted February 11, 2022 Smoldering intensity...☺️ 1 Quote Link to comment Share on other sites More sharing options...
apersson850 Posted February 11, 2022 Share Posted February 11, 2022 8 hours ago, Ed in SoDak said: With the usual TI Flex, 32k, RS232 and Floppy Controller, the PEB 12v supply would sag a bit if I also had two half-height floppy drives in there. Had to be low-power drives to be reliable with two, so I just have a single drive in there nowadays. Don't want any smoldering in my PEB! I have the Flex cable interface, RS232 card, 32 K memory expansion, P-code card, real time clock card, IO-card, RAMdisk, disk controller and two 5.25 inch floppy disk drives. This with the original power supply. That's no problem at all. Quote Link to comment Share on other sites More sharing options...
humeur Posted February 11, 2022 Author Share Posted February 11, 2022 1 hour ago, apersson850 said: I have the Flex cable interface, RS232 card, 32 K memory expansion, P-code card, real time clock card, IO-card, RAMdisk, disk controller and two 5.25 inch floppy disk drives. This with the original power supply. That's no problem at all. I'm looking to replace the power supply in a 110 volt pebox, I don't want to put a pc power supply, so I'm looking for another solution that guarantees the normal operation of the regulators that are on the 7812 7805 cards. .. you have to make a difference about 3 volts between the regulation and the input which does not exist with a pc power supply. 1 Quote Link to comment Share on other sites More sharing options...
apersson850 Posted February 11, 2022 Share Posted February 11, 2022 14 hours ago, humeur said: I just wanted to know the characteristics of the PEBOX power supply. Ah, I see. So this wasn't true, then. You do have a purpose with your questions. I have read that some people put in a regulated supply in the box, and removed the regulators from the cards. You just have to be careful not to insert the cards in a standard box then. 1 Quote Link to comment Share on other sites More sharing options...
humeur Posted February 11, 2022 Author Share Posted February 11, 2022 31 minutes ago, apersson850 said: Ah, I see. So this wasn't true, then. You do have a purpose with your questions. I have read that some people put in a regulated supply in the box, and removed the regulators from the cards. You just have to be careful not to insert the cards in a standard box then. Why ask questions if there is no purpose. It is not a solution to remove the regulators even a stupidity,if one day there is a sale of the equipment, the one who buys will have a nice surprise On the other hand it is certain that it is easier to carry out, but to put a pc power supply which will be able to debit 5 Volts 30 A what is the use for a TI. Quote Link to comment Share on other sites More sharing options...
JB Posted February 11, 2022 Share Posted February 11, 2022 14 hours ago, humeur said: Thank I'm surprised I thought more. The original P-Box power supply was somewhat limiting. I've gotten the impression that replacing the 5v and 12v regulators with higher-current ones was a somewhat common modification, though I could be wrong. 1 Quote Link to comment Share on other sites More sharing options...
humeur Posted February 11, 2022 Author Share Posted February 11, 2022 15 minutes ago, JB said: The original P-Box power supply was somewhat limiting. I've gotten the impression that replacing the 5v and 12v regulators with higher-current ones was a somewhat common modification, though I could be wrong. the problem is the overheating of the regulators on the cards, to reduce this you have to reduce the voltage at the input of these regulators, you need a difference of 3 volts between the input and the output of this type of regulator, except that the power supply of the PEBOX is much higher than the theoretical 16 volts or even more with little load. Texas had planned for solid 1 Quote Link to comment Share on other sites More sharing options...
Like us on Facebook
Follow us on Twitter
AtariAge on Instagram
Watch us on YouTube
Chat on Discord
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.