re 55 shows the
fuse plug in the position for charging a 6-volt battery. When it is
desired to charge a 12-volt battery or an 18-volt battery, the fuse is
removed from the first receptacle and is screwed into the second
receptacle.

[Fig. 56. The Four Battery Tungar Rectifier Complete]

The two-battery rectifier is designed to operate on a 115-volt,
60-cycle line, but oil special order may be obtained for operation on
25-30, 40-50, and 125-133 cycle lines.

D. The Four Battery Tungar

Catalogue No. 193191

This Tungar is shown complete in Figure 56. In Figure 57 the top has
been raised to show the internal parts. Figure 58 gives the internal
wiring connections for a four battery Tungar designed for operation on
a 115 volt line.

The four battery Tungar will charge from one to four 6 volt batteries
at 5 amperes or less. It is designed especially for garages having
very few batteries to charge. These garages generally charge their
boarders batteries rather than send them to a service station, and
seldom have more than four batteries to charge at one time. The four
battery Tungar is also suitable for the use of car dealers who wish to
keep the batteries on their cars in good shape, and is convenient for
preparing for service batteries as they come from the car manufacturer.

[Fig. 57. The Four Battery Tungar Rectifier, with Top Raised to Show
Internal Parts.]

The four battery Tungar is designed for operation on a 60-cycle line
at 115 or 230 volts. On special order this Tungar may be obtained for
operation on other frequencies.

E. The Ten Battery Rectifier

Catalogue No. 179492

This is the Tungar which is most popular in the service stations,
since it meets the charging requirements of the average shop better
than the smaller Tungars. It will charge from one to ten 6 volt
batteries, or the equivalent at six amperes or less. Where more than
ten batteries are generally to be charged at one time, two or more of
the ten battery Tungars should be used. Large service stations use as
many as ten of these Tungars.

[Fig. 58 Internal wiring of the four battery tungar rectifier]

The efficiency of the ten battery Tungar at full load is approximately
75 per cent, which compares favorably with that of a mercury-are
rectifier, or motor-generator of the same size. This makes the ten
battery Tungar a very desirable piece of apparatus for the service
station.

[Fig. 59 Complete 10-battery Tungar r