856 



Voltaic Electricity. Section 1: Galvanic Sources oJ Current. 



No. 60870 



60 994. 1 : 7. 



60 995. 1 : 6. 



60 996 A. 1 : 12. 



discharging, an ammeter. In addition it is desirable to have a regulating resistance so as to be able to take off 

 current of any current-density according to requirements. The multiple commutator permits of the cells being 

 put in parallel for charging and putting them both in series, in groups and in parallel when discharging. For 

 most purposes an 8-cell battery No. 60,954 at 10. 14. OJsize III) is sufficient. With reference to tho chiiryin.i;- 

 of accumulators, vide Prof. Friedr. C. G. Muller's work: fiber Aufstellung und Betrieb von Akkumulatorm fin- 

 den Schulgebrauch", Ztschr. f. d. phys. u. chem. U. 11, p. 124. 



Batteries for School Use, with multiple commutator. The cells are built into ebonite vessels. 



Size 



Max. charge and discharge current) 



Amps. } 



Capacity when discharged for 3 hours ) 



Ampere hours} 



Capacity when discharged for lOhours \ 

 Ampere hours) 



Price of a 



4-cell 

 6 , 



battery 



12 

 16 

 24 



Stationary Battery quoted for on application. 



60,994. Battery of Accumulators, K i g u r e, consisting of 16 small accumulators in an in- s (1 

 sulated wood stand. These groups of 16 cells each can be combined in any number 

 to form a High Voltage Battery 3. IL>. o 



The max. charge and discharge current of this type of accumulator is 0.6 amp., the capacity 

 being 3.5 ampere-hours. Each cell has 1 positive and 2 negative plates. 



60,995. Battery of Accumulators (Zehnder's), Figure, consist ing of 20 Cells. The Batteries 

 can be combined in any number to form a High Voltage Battery ......... 



battery is supplied with formed plates. The maximum charging current is 0.06 ampere, 

 the capacity being 0.3 0.7 ampere-hour according to the time of discharge; 2.5 volts per cell should 

 be taken as the final voltage when charging. 



Instructions for use are appended to each battery. 



Cl. 2273, 



2274, 2275. 



1.10.0 





