connect it to a
run-down starting battery to prevent it from freezing over night. Of
course, a battery should not be allowed to run down during cold
weather, but if by chance a battery does run down, this Tungar will
prevent it from freezing during the night.

The two ampere Tungar is, of course, more suitable for the car owner
than for a garage or service station. It is also very suitable for
charging one Radio "A" battery. The two ampere Tungar is normally made
for operation on a sixty cycle circuit, at 115 volts. It may also be
obtained for operation on 25-30, 40-50, and 125-133 cycles alternating
supply line. See table on Page 130.

B. The One Battery Rectifier

Catalogue No. 219865

[Fig. 54. The One Battery Tungar Rectifier]

This Tungar will charge a 6 volt battery at five amperes, or a 12 volt
battery at three amperes. Figure 54 shows this Tungar, with part of
the casing cut away to show the internal parts.

To take care of variations in the voltage of the alternating current
supply from 100 to 130, a set of connections is provided which are
numbered 105, 115, and 125. For most supply voltages, the 115 volt tap
is used, for lower voltage the 105 volt tap is used, and for higher
voltage the 125 volt tap is used. This Tungar is designed for 60 cycle
circuits, but on special order it may be obtained for operation on
other frequencies.

This Tungar is most suitable for a car owner, is satisfactory for
charging a radio "A" battery, and a six volt starting and lighting
battery at one time.

C. The Two Battery Rectifier

Catalogue No. 195530

[Fig. 55. The Two Battery Tungar Rectifier]

This Tungar is shown in Figure 55, with part of the casing cut away to
show the internal parts. It was formerly sold to the car owner, but
the one battery Tungar is now recommended for the use of the car
owner. The two-battery Tungar is therefore recommended for the very
small service station, or for department stores for taking care of one
or two batteries. The four battery Tungar, which is the next one
described, is recommended in preference to the two-battery outfit
where there is the slightest possibility of having more than two
batteries to charge at one time.

The two-battery rectifier will charge two 6-volt batteries, or one
12-volt battery at six amperes, or one 18-volt battery at three
amperes. It has a double-pole fuse block mounted on the auto
transformer core, which has one fuse plug only. Figu