ifar355@ccwf.cc.utexas.edu (David H. Huang) (01/09/91)
Recently, I received an ASCII schematic for something, and it includes a diode rectifier. Unfortunately, there aren't any arrows showing which way the diode goes. Which one of these is it? (multiple choice for your convenience :-) a) ____|\|____ b) ___|\|____ c) ____|/|____ | |/| | | |/| | | |\| | --- --- --- --- --- --- ^ ^ ^ \ / ^ \ / /_\ /_\ /_\ --- /_\ --- | | | | | | |____|\|____| |___|\|____| |____|\|____| |/| |/| |/| d) ____|\|____ e) other | |/| | --- --- ^ \ / /_\ --- | | |____|/|____| |\| I think there are only 4 ways to arrange the diodes, so there shouldn't be an e, but I could be wrong... -- David Huang | Internet: ifar355@ccwf.cc.utexas.edu | "My ganglion is stuck in UUCP: ...!ut-emx!ccwf.cc.utexas.edu!ifar355 | a piece of chewing gum!" America Online: DrWho29 |
myers@hpfcdj.HP.COM (Bob Myers) (01/10/91)
a) ____|\|____ | |/| | --- --- ^ ^ /_\ /_\ | | |____|\|____| |/| This one. AC in is across the upper left and lower right nodes; DC+ out is the upper right, and DC- is the lower left. Being the sort of person I am (a part-time instructor of such things as DC fundamentals), with this clue, I'll leave it to you to figure out why this is so. Bob Myers KC0EW HP Graphics Tech. Div.| Opinions expressed here are not Ft. Collins, Colorado | those of my employer or any other myers@fc.hp.com | sentient life-form on this planet.
dclaar@hpcuhc.cup.hp.com (Doug Claar) (01/11/91)
/ hpcuhc:sci.electronics / ifar355@ccwf.cc.utexas.edu (David H. Huang) / 12:43 pm Jan 8, 1991 / a) 1____|\|____2 | |/| | --- --- ^ ^ /_\ /_\ | | 3____|\|____4 |/| ---------- Now would you like to know where the wires go? 1 & 4 = AC 2 = + 3 = - Theory: A diode passes postive voltage thru the arrow, negative into the arrow. (Ok, it's not real precise, but...) So when 1 is positive, it goes to 2, but can't get to 3. When it is negative, it goes to 3, but can't get to 2. The same is true for 4: Positve goes to 2, negative to 3. I'm sure that someone will say it much more eloquently, but that's the terms in which my EE-wannabe CS mind remembers it. Doug Claar HP Computer Systems Division UUCP: mcvax!decvax!hplabs!hpda!dclaar -or- ucbvax!hpda!dclaar ARPA: dclaar%hpda@hplabs.HP.COM