An incredible approach! The phase control of a dimmer can be done with a direct electronic control, without electro-mechanical devices as a motor. Why this expensive solution?
An other problem is that a dimmer had to be designed in this case that withstands the high voltage of 600V rms which will occur incidently. Further it is questionable whether it is a good way to use fase control of the input AC Voltage from 384 to 600V to get 127V. Either use a servo controlled transformer or a converter (AC-DC-AC). Regards, Harry > Hi there! > you need a servo voltage stabiliser that uses a dimmer on the phase > connection to correct the incoming mains. The DC Motor driving the arm of > the dimmer is controlled by the error amplifier that Drives a servo motor to > correct the incoming mains. Such SCVS are commonly used in all sensitive > installations and based on applications variety of designs are available. > Here in India these are mass produced and conform to reasonable quality. > ----- Original Message ----- > To: Multiple recipients of list CHIPDIR-L <[EMAIL PROTECTED]> > Sent: Friday, November 28, 2003 7:39 PM > > > > Hello Members, > > > > I'm looking for some information about AC line regulation technics. > > There is my problem: When connected to agricultural electrification, the > > measured AC mains voltage varies from 384 to 600 V, when the nominal > voltage > > is 440 V! Of course a transformer with several taps could be specified, > but > > the AC input voltage varies several times a day. There is a need for > > automatic AC regulation. > > The output has to be 127 V (AC), and the rated power is about 1.3 KVA. > > Could any of You members inform about any URL where I could find > information > > about calculating the circuit envolved, or give some practical advice? I > > say, per example, triacs, comparators and so on. I searched the internet > for > > application notes, and I could not find them. > > > > > > Any help woud be appreciated. > > > > > > > > > > Thank You. > > > > > > Paul H. > > Brazil > > > > > > -- > > Author: Paulo H. Castro > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > > San Diego, California -- Mailing list and web hosting services > > --------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > > the message BODY, include a line containing: UNSUB CHIPDIR-L > > (or the name of mailing list you want to be removed from). You may > > also send the HELP command for other information (like subscribing). > > -- > Author: hemang Vyas > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB CHIPDIR-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Author: H.C. Croon INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
