DYNAMO AND BATTERY

Evening Post, Volume CXVII, Issue 76, 31 March 1934, Page 20

DYNAMO AND BATTERY

WORKING AND ATTENTION

NEW CHARGING CONTROL

_ So dependent is the modern car upon electrical energy, that there can be no excuse for neglecting the components in which this energy is generated and

stored. , The generator may be driven from the engine cither by goaring or by a belt; in the latter event the tension of the belt should be'ehecked and adjusted from time to time. There is also, as a rule, a small oil cup (feeding the dynamo spindle) -which, should recoivo a few drops of thin lubricant at 500----mile intervals.

The djnanio cons>ists ot 1 steel (.at, ing w-ithiu which a rotating armature canics coiK of hub which aie con nected to theiepppe'r bars of a commutator. Spring-loaded brushes make firm coutaet with revolving bars and so pick up the current geneiated in tho armatuie windings, The magnetic field uecessaiy foi cuircnt generation is pro duccd between poles caiijmg held coils which are energised bj cm rent de irved from tho biu^h geai To pic\ent the aecumulatoi fiom di& ehaiging thiough the djnamo i "cut out" bleaks the cncuit until such time as the chnamo \ oltagc exceeds, thu or the cells

Tor m-anj jcus the mos>t populai method ±01 conti oiling the output of the cUnimo w is what is, 1 illtd the thud binsh system The field coils ue con nected to one ot the mun biushos and with m auMli-u\ biubh t.o plxceil that ihc cneig> which it leccnes dependa upon the speed and output Vlthough the lcgulation obtainable 111 this wa\ is by no means e\act, the sjstem his the meiit ot simplicit-v, md is usuilly supplemented by 1 switch -with which the duvei can legulate the output Foi 1934, many cai nnnntactuieis aie standardising a n.c>\ sjstem. of \olt age legulation which oveieomes the main disadvantage of tho thndbiush sjstem in that the icte of chaige is automatically 1 educed -\\hcn the battoiy is "up " The lcgulatoi consists of a \lblatlng arimtme, eontiollcd by wind 3r>gs, which automatically holds the \oltagc to .1 piedetcimincd figuic

With lcgud to the aecumulatoi, whilo it is coincnient to siy that this unit is employed to stoic electrical cncig\, it is realty a battery in which the chemical action is reversible

The duties ot the ownei dinci -no confined to keeping tno teimmali> clean md tight, togethei with the leplemsl! nicnt ot the cells at lcgulai intenalb Vt any convenient time—as, foi ex ample, -when a cai is being o\eihaulcd —it is advisable to have the battci> 'i cnio-\ cd s>o th it the cells may be emptied, inspected, and lefillcd

For those who make such use of their electrical equipment, that .the amount of daylight running is not sufficient to compensate loi the encigj taken jiom the battcij, digging units aie now i\ ulable b\ means ot which enug> ma\ be added fioin the house mums