| Show certain capacity for best results why bypass by pass condensers in audio circuits are important parts tt the stopping stop condensers in lip p ld circuits of resistance coupled are too small they defeat the very object sought in using resist ance coupling tint IB of the low notes ahe stopping condenser la a series connected condenser through which the igal must puss and n small condenser offers a very high amp dance to currents of low frequencies so that thee currents will be depress d the decree of suppression nt anny plen frequency depends of course on the cap alty of the condenser and ijo on the plute of the lube on the coupling resistance in the pinto circuit of the tube ard on tho grid leak resistance of the tube follow ing the stopping con denser for the ordinary alues of these aal for the values of capacity of the condensers hicom mended by many designers of amell flors the suppression Is hf no me ins negligible in some cases lie small condensers used vm introduce ni much distortion as poor transformers ideal lizs of condenser the ideal size of in the grid circuit Is one of infinite capacity or one which la ns large as Is practically hut condensers are both expensive and bulky and for these reasons the larger taras are ruled out of consideration perhaps the largest that need be used Is 1 microfarad unit this condenser will introduce a distortion of less thin 1 per cent for tie lowest audible note A condenser as smell as 1 arnd will not introduce more than 8 per beit suppression at ai cycles a second and much less at frequencies t simplicity OF RADIO by POWEL CROSLEY JR RADIO WAVES TUNING when one talks ocr the telephone one has wins to lie energy where it Is supposed bup posed to go and an exchange carl to ghe one the proper hut nent are we to do in listening over the radio with no wires to guide the radio anus and no radio exchange garla e lcara very quickly what to do after ing a radio set e must be our ow n girl tinning the dills and working alie controls until we get the station we want e are told that this act of exchange girl Is called tuning hut whit liappess liap pens when wo turn all these gadgets aft understand this we will go out into lie yard and get in a swing A porch swing will do hut a rope swing Is better because it will respond more showing tow t ow a swing has a natural period of vibration promptly to lie slums that we are poleg to emhe it da e 1 on the PI ill lliran we will push as hunt as ue can ee hon high we can swing one thing alint we notly orv tg that wv hue to tm I 1 ashes at just the rutht intel mils in order to hang und higher if we puli ut the wrong push ilick we are still suler forward for instance we will like ft allor just wilh na 1 OHM OH M aluf this way one instent mid dav lh next and now lure thu he ni to back forch ul n bite jait llop ii p nihil nin lt the iopu we in biml 0 the alm of tho warns in shorter or b ali ro acx e ann cnn ninke jl I 1 in n or lie ion pl IP trip lick mul forth p neld alio polma of alip w ing i erv ams tut trl i fir ni the lyntton f iti in it are 1 hv in the lyovin ns n and thus 0 c units e HIP rate of of tho lc tIr in the circuit now if P adjust n radio aroid stall to nd out vinas 0 i period r arx nui 1 I 1 will bf in v afi but a condenser of microfarad which Is often recommended for re amplifiers will introduce as much as 30 per cent slon at 11 cycles and quite notably percentages at the higher and more important frequencies that la far from the st stopping condenser that should be used under anny condition Is an audio frequency amplifier that may be taken as 01 microfarad and that should be used only for ultra selective sets I 1 or receivers of ordinary selice the choice should be from tha capacity range of 1 and 1 microfarad or the smaller of these the alon at 10 cycles la less than 7 cent a distortion la introduced objection has been raised to the na of alio stopping condensers on tho ground that tt tal ea an appreciable time for thi pe condensers to chargo and eliat as a consequence distortion Is introduced that Is not valid be baue the condenser does not charge the voltage being the same on side ns far ns A 0 Is concerned ahe email condenser Is charged quickly and eliat Is just how the suppression enters R A long cord uses power r although lie set owner ran scarce IT detect it the long extension for the cord uses more n power this lq particularly where h are starting to give out for tho decrease in Is then mora pronounced with the ordinary fetcak er and particularly so alth the extension 1 or extension us he t should be equipped a H storage battery or a D elaml keep batteries upright the of placing dry B batteries on their sides or bicks la strongly disapproved by battery millers if you wish to the longest possible life from your butteries keep tf them standing upright ang this station to adjust the ing equipment 0 o tint same period in order to got lie best of results the broadcasting station Is like the man pushing the swing und the recoiling station dihe the unless on 3 properly timed to the other will be little result in practice each station Is allotted by the government a certain specified period frequency or wao length fo which its equipment ir must be adjusted iv turning alie jf of his recoiling set and changing its period the radio amny then from one broadcasting station to another few changes in radio in sight says expert dr J II 11 chief of the radio of the bureau of ards declared while inspecting the plant in new ark with a party of 40 members of the insel lute of radio engineers hit it 1 I 1 be leeral icara at leist before the present nil be to any great extent people hae quit waiting for some in radio to i conditions and they are inking broadcast receivers into w their homes in the well founded belief that they are getting a standard ayed Is not going to be out of date for many years he said adv doubting who arc still postponing their enjoyment of i broadcast reception lug home sweeping tl iange are ault ing in vain 1 am afraid minor refinements fine ments uny be aul but the basic operation and re suits ns found in the latest sets will unchanged for bome fome timea and fadius which he conald ars inured by the sun may be oe come in the future but ch Is far from he solution he added ants loav eventually cine are being made with a KOV arnor on a receiving set wilt an ar tom inert use sensitivity as al ing b gins and acri sea it as signals aro but Us Is not yet in llenore biln doctor alexander pon experiment I 1 waa ery about moles bit I 1 am con lix td it la onh n matter of time and the deployment of al ande islon hi radio in the home may he the next important am about eight or ten yearn boiu now I 1 we ie both in and looking in on distant and operas white comfortably at biome how to test condenser to determine shorts ahe best ft to wl tether t alie in a variable condenser boudi cacci other li by connecting f and bawer in series with alie the onerato while rc oiling the rotary pentes it tant lie are touching A spirit fall bo sian ciuti points daid taiti alie conj lie aethol methol lu im usail in loc the croume s u and 1 lin lantery tery cn in the same acu vi aa th buzzer t |
