Bemidji Daily Pioneer Newspaper, October 4, 1922, Page 2

i 18 o VACUUM TUBE WHEN " USED AS AMPLIFIER b Will Fenction Thus for Either Radio Frequency or Audio ';Frequenex. 3 9 y Ntarting today we shall give a de talled description of the v when ‘used as m1 amplifiex. This series, as In the past is contiruous and if clipped out aml saved Wil be con- ventent for refqrence. When the three-electrnée vacuum | #traight line, then CD will equal B- iE, or so long as the working range {falls within straight line portion of ithe characteristic curve, symmetrical jichanges in grid potentlal will cause aum tube isymmetrical changes in plate current. {From this it can be seen that if the iworking point “A” be selected mnear ithe bend of the characteristic curve, |- 'symmetri(-al changes in grid potentlal ‘will not cause symmetrical ‘thanges in :plate current. Since the plate currént ivariation in such case would bear only islight relation to_the grid variation In .potential, the output of the gme would ‘be distorted. [ : In applying_amplifiers tq: recelving {sets used to pick radiophone stations, idistortion is one of the greatest dif- ificulties to' overcome. oo strong }!Ignals will result in decreased am- iplification. In Figure 23, if the ap- iplied variation in grid potential were ‘10 times that shown in the example. :the plate current would not change iube was used ai; a detector, the cir |10 times as much, because of the cuits - associated | with it were such ' |bends in the curve, due to saturation. that where a synmetricell alternating difference: was applied %o the grid, a symmetrical change in plate current resulted. ‘That is to.say, the vacuum tube acted. as a rectifier,’ In addition |/ »to rectifyiag, the tmbe akso amplified. The variation in plate cir¢uit was “K,” where “K” is the 'amplification con- stant of the tube, times what it would have been in a two-électrode tube, for the, sanie potential Impressed on the|; grid. . - By, properly adjusting the electrical constants of the clicults associated with a three-electrode, tube, symmetri- Plote Currerns —» iFinally, a condition can be reached ‘where the use of an amplifier tubs iwill decrease the signal strength be- cause of the saturation of the tube. The rectifiell incoming signals would be louder without the use of the ampli- fier tube, because of the inability of the plate current of the tube caused by saturation to increase in propor- tion to the signal strength. There are, in general, two factors that can be taken from the charac- teristic curve and the second is the length of the straight portion of the curve. The slope of the straight por “THE LONG CHANCE” AT ELKO THEATRE TONIGHGT Gila had grown to city size, with plumbing, churches and alfalfa to hide its mining-center past. But Harley ‘P. Hennage was still the “worst man, in .town” because he of necessity was associated with :the past. . The Mojave desert, , endless streaks’and sweeps of sand, is.the lo- cale of the story and was used in the filming. . And what happens in the story might happen elsewhere. So'it isn’t in"ahy sense a “Western” picture, except that:the Mojave des-' ert is in the far western part of the domain that the geography says is the United States. No cowboys. No senseless fighting. A lot of good acting—couldn’t expect anything else from Walthall and the rest. And that’s “The Long Chance”, showing at the Elko theatre today and Thursday. It's a good product made of the right elemients, “ORPHANS OF THE STORM” AT REX; LAST TIME TONIGHT “Orphans of the Storm,” the big D. W. Griffith film of the season, recognized as one of the five biggest photoplays of the year, is showing again today, last times at the Rex theatre. In booking this show in order to give its patrons an vpportun- ity to see the best film of the day the Rex theater has encountered a very expensive production. However it will be shown at popular prices that every film fan in the city and surrounding country may have an op- portunity to see it. In putting the price low on this film, the Rex feels that it would rather show to all fans at-a nominal price than to show to a part of them at the prices asked for this show in the larger cities. “Orphans of the Storm” is Grif- fith’s biggest production to date: The cast is one of the strongest ever assembled for a single picture. Again the two Gish sisters are to be seen in the same film. Lillian and Dorothy Gish as co-stars are support- ed by Joseph Schildkraut, Frank Lo- see, Catherine Emmett, Lucile La- Verne, Sheldon Lewis, Morgan Wal- lace, Frank Puglia, Creighton Hale Leslie King, Monte Blue, Sidney Her- bert, Leo Kolmeri, Adolphe Lestina and Kate Bruce. Out of 300 actors and actresses who triedefor places in the picture, those who now appear in the film are those who qualified in the struggle for the survival of the fittest. Few who sce the “Orphans of the Storm”” will abpreciate the huge task and vast detail necessary in the film- ing of such a gigantic spectacle. Those who have seen it on the screen declare that this picturization of Kate Claxton’s famous stage classic is without equal on the screen today. The picture comes to Bemidji highly recommended by long and successful runs in all the larger cities, many of which are still showing at prices ranging near a dollar. -— 0 =t | Grid Potential Fig. XX cal variations of grid potential can be made to produce symmetrical varia- tion ‘In plate current, which are “K” times the amplitude of the plate cir- ‘cuit variations of a similar two-elec trode value with the same applied grid potential. This means that if a three-electrode value be used in the proper circuits in a radio receiver, the signals can be made to appear as though ithe received signal Is “K” times as strong as it actually is. If two tubes are used with their proper circuits in conjunction with a radio réceiver the received signait will ap- pear to be “K” times as strong as they actually are and so the apparent strength of the incoming signal is mnltiplied by “K” for each additional tube added to the receiver circuit. A vacuum tube used in conjunction with a cireuit that will cause the plate current to-vary in exact proportion to the applied grid voltage, but ap- parently caused by “K"” times the sc- tual grid voltage variation, is called an-amplifier. 1f the tube functioning as an amplifier Is used to amplify the incoming signal at radio frequency be- fote it s rectified by the detector, it is termed a radio frequency amplifier. If the tube functioning as an amplifier is used after the incoming radio fre- quency has been rectified by the de- tector. it is termed an audio frequency amplifier. - Returning agalp to the character- Isti¢i curve of the three-electrode vac- uurd’ tube,’“shown in' Figure 23, natice its shape. Suppose that a pos- itive: potential was applied to the grid by means of a “C" battery so thatithe tube would function at a poifit represented by “A” on the chfiracteristic curve. If now the ap- plféd grid potential from the “C” bat- tery be reduced by an amount rep- ‘ref¢nted by A-B in Figure 23 the cottesponding reduction in plate cur- rent will be represented by B-E. On thie_other hand if the grid potential bet:, increased by sn amount repre- sehted by A-C, where A-C equals B-C, tlie” corresponding increase. in plate current is- C-D. wdf the portion of the characteristic cdrve in the region of E-AD is a tion of the curve determines the am- plification of the tube. The more ‘mearly vertical the siraight portion of the curve is, the greater will be ithe change in plate current for @ ‘given change in grid potential, or in other words, the louder will be the .response In the telephone receivers corresponding. to a given received signal. The length of the straight portion of the curve derermines the maximum variation in grid potential that will cause the tube to function properly without distortion. — TIPS TO RADIOISTS ] At Muncle, Ind.,, bacon was ; fried by means of a radio cur- ! H i H § § i that “frying” noise. Gifford Pinchot, nominated for governor of Pennsylvania by tha vote of the people, acknowl- edges his great Indebtedness to the radlo. A primary coil no doubt played an Important part. An inventor of Chicago claims to have invented radio apparatus that permits of successful com- munication with the splrits. We hope that the anti-prohibi- ; tionists will not misinterpret this claim. The pollce i i i rent, At last an explanation for £ | H i department of § Portland, Orehas afked for nqig 53 “CARDIGAN” AT THE GRAND TO AID LEGION HOSPITAL Under the auspices of the local American Legion post, the net pro- ceeds to go to the American Legion state hospital fund, “Cardigan” will be shown at the Grand theatre again this evening. “Cardigan” tells the most thrilling tale of the most wonderful thing that ever happened in American hist- ory. It is from the well known novel by Robert W. Chambers and was made on the exact spots where history was written. picture is the first real 100 percent American historical picture ever made. It opens in Northern Johnstown, New . York, two years before the young Irish boy, an unwilling sub- ject of the tyrant English king, and the ward of the English governor. The love affair of the youngsters creates an enmity which blossoms forth into the firing of the first shot for world independence—an accurate historical fact, as recorded in the history books of the United States. Young Cardigan is torn asunder from his young love and through fighting to regain her respect and con fidence he is almost burned at the stake, having been accused of a triple murder. He is released, however, when the.truth becomes known, and it is then that he learns of the perfidy of Captain William Butler- the arch villian who later became as despised as did Benedict Arnold. the traitor. LAST CHANCE TONIGHT TO SEE “ORPHANS OF THE STORM” “Orpharns of the Storm,” by spec- ial arangement, has been secured to show again tonight, for the last time at the Ret‘h‘éafi%’- H » This. show has proven a big draw- i ;{h‘i fd_in_:Bemidji, having shown ing and’ b to & packed thouse for three days. deasfing and to equip®the poli tomo= biles with radio abparatus. Cop- per wire, ‘it is needless’'to say, will be used. # Lord Northcliffe, famous. Eng- lish editor, in speaking of the future of journalism, recently predicted that radio would have an effect upon the publication of newspapers that will equal the invention of the linotype ' d high-speed press. He sald ? approprlqfio; “for rndli racelv- PO H i i that radio would undoubtediy come into general use of news. papers and newsgathering agen- § i cies. § ! L s 'NOW'READ THE WANT AD COLUMNS OF THIS PAPER ‘Many ‘are/sedidg it-a second time and becae of the demand the Kex managemelt, arranged for another day of this"great Griffith production. Every effort will be made to ac- comodate tha crowds tonight at both shows so that none in Bemidji will not have seen this truly great pro- duction. It was the plan of the man- agement to secure it for the balance of the week, but this could not be, done- greatest attractions on the screen to- day and should be seen by every citizen in this community. HCRNET Among those wha were in Black- duck on Friday were Theodore Maisse The | Revolution, with the love story of a! It is no doubt one of the! . THE BEMIDJI DAILY PIGNEER ...+ WEDNESDAY. EVENING,-OCTOBER 4, 1922 —e———_——‘_-i_—-—__—— Nelson Overly, Emil Hein, J. D. and J. E, Bogart. Miss Edith Ertenberg went to Kel- liher“on Saturday and. attended the services ag-the Luthezan church there on Sundayi Some of the people from here at- tended the Blackduck Community fair, on Tuesday and Wednesday- C. W. Dudley of Blackduck motor- ed to the Crookston cedar spur on Tuesday, f Accidents Happen \fi%-‘ ery Day. T Pt | .No Rest - No Peace’ for the one wio suffers from a bad back, and ‘distressing urinary dis- orders. Bemidji people recommend Doan’s Kidney Pills. Be guided by their experience.- Ave.., Bamidji, says: “Six years ago my back was giving me quite a I bit of trouble, caused by the disorder- ed condition of my kidneys. Ihad a steady, dull -ache across the small of my back and at night, every move 1 made broke my rest. When I. tuen- ed suddenly or did any bending, ‘a sharp pain_stabbed me thmqgh_ my kidneys. Headaches and dizzinesy came on quite frequently and often I was annoyed by spots floating be- fore my eyes. About this time heard of another case smilar to mine and that is how I came to take Doan’s Kidney Pills. I felt much relief from the starts that I kept on with Doan’s until I had taken in all, about ten boxs. It was well worth the trial, as I was rid of the trouble and ever since then, my kidneys have been in good condition.” y 60c, at all -dealers. Foster-Wilburn Co., Mfgrs., Buffalo, N. Y. LEARN BARBERING Under the direction of Pro. Gils- dorf, 36 years experience. Fall term now cpens. TWIN CITY BARBER COLLEGE 204.Hennepin Ave., Minneapolis, Minn. e ——— e —————— POLITICAL ANNOUNCEMENT (Inserted for znd by Andrew Johnsen in his own behalf. Amount to be paid for series $20.00.) ANDREW JOHNSON Re-elect him sheriff of Beltrami County at the election November 7th. He has been a conscientious of- ficial and asks the support of the voters on his past record as their sheriff. Your vote will be greztly apprecia- ted. i Andrew Johnson, Present Sheriff of Bel- trami County. REDUCED FARES NATIONAL DAIRY SHOW il SAINTPAUL MINNEAPOLIS Account | | Fare and One-Third. For the Round Trip Tickets on sale October 5th to 13th. Final Return limit October 16th. on call, For further information tickets or reservations, write or phone. GREAT NORTHERN RY. 4, ks There’s no peace and little restih Mrs. E. J. Carver, 623 Mississippi | SHOTLEY-FOY, Miss Dorothy Carlson and were in: Blackduck Saturday. Mes. C. F. Brown and dauzhters rs. M. Estigaard and daughter and and 1%stehr Iverson called at P. Gor anson’s Sunday, . Clareuce Brown wes a buiiness caller in Kelliher Tuesday. « Mceting' was held in the tabernacle ight sen’ and family avere in Kelli- ‘church. at “Foy called at E. Caresons in Shotley list Sunday ev- ening. Ladies* Aid will be held at M. Wal- quartsens Saurday. Mrs. Dolmznd callee“. at O, Peter- sons’ Sunday a‘fternoom. Sanford Scer called at F. Iversons Sunday afternoon. Mr. Mat Dads>d is a week-end vi- sitor at 0. R. Eunsvold’s. Ladies’ Aid will be held at Erick Olson’s next week. Mrs. Reed and Son were Sunday afternoon guests at O. Peterson’s. Quite a number ©of people Lringing cattle into town to be ship- and Mrs. Allen and Mrs. Dodge were Thursday evening visitors 2t J, A. Carlson’s. The Ladies’ Aid of the Norwegian church are improving it. There is quite a iot of fire around this vicinity now. the crowds to see it. REX will wan to see. LTI UL T L OO f i i _cost MORE THAN FOUR [ T e G T T e score by special orch Wednesday {aight. “Thursday . LTI TR LA B LT LU AT LTH TN LTI TR Y Held over for one more day in . order . for ' “THE TWO ORPHANS" ! Vast-Dramatic- Hypnotic- Entrancing ‘One scene lasting one-half minute cost more than ,any two dramatic productions In New York. i ‘The BEL-AIR FETE, lasting a minute and a hailf YET THIS MOST ASTOUNDING ‘THERTRICAL ENTERTAINMENT EVER 'POPULAR PRICES i The Swirl of the Mad Dance of the CARMAGNOLE The Frenzied Sweep of PASSIONS Thru the Magic Garden of DePRAILLE THESE YOU FEEL-HEAR -~SEE - made the sensation of the century “pARDON-MY NERVE” = - Today-- LAST SHOWIG This is D. W. Griffith’s biggest 'and best picture; A film every person in any city i~y i ORCHESTRA ' | GIVEN AT This s the secret of that fremendous power which has By arrangement with Kate Claxton with Lillian and Dorothy Gish. MATINEE AT 2:30 Prices 20c and 40c |2 Evening shows 7:00 & 9:00. Special music estra. In order for everybody to see “Orphans of the Storm” the picture will be held over for one day more, ending the engagement lliilfilll!llllllllllll " Buck Jones R, T 3. -9 ) v — “LONE STAR RANGER” B ———— et ssaai William Farnum Mystic Marvel. W. B. Warner pres Barry. Coming October 7, 8, 9, Mahendra, " the es” by Marshall Neilan starring Wesley ents “Rags to Rich- NI HInnnnninnninanne are ) Bicycles — Motorcycles Harley-Davidsopn Line NEW AND REBUILT Order Your Parts From Us GENERAL REPAIR SHOP BEMIDIX i Larson & Larson SPECIALISTS ‘EXAMINING EYES FITTING GLASSES Office, First Floor 213 Third St. Office Phone 131 Res. 310 = Ladies’ | Tailoring Is Our Specialty Pressing, cleaning, repairing and tailoring of all kinds. Suits Made to Order New Fall and Winter samples are here. A. HENDRICKS Phone 540-W - Over Gill Bros. Store BEMIDJI CLEANERS Dry Cleaning, Dyeing and Repairing of ali Wearing Apparel. We call for and deliver —PHONE 578— Out-of-Town Custom- ers: “Send your clothes by Parcel Post.” ~First Class Work and Prompt Service. Bemidji Cleaners N. Papermaster, Mgr. New Kaplan Block Bemidji Minn, REAL CLEANSI EQUIRMEN’ Proper = Mechanical Equipment plus ex- perienced skill in- sures A-1 Dry Clean- 1 ing Service. it a uing . d;wiycy i glass of Kpors Pas- tuerized Milk right off ‘the ice will re- vive you and you’ll feel that it’s a good satisfying food drink, ' PNalarckiua