twin transformer ?

Hi,

I was lucky enough to get a junk yard transformer/cap/set of diodes
from what I think was some sort of telecommunications unit. It is
marked ROLM Corporation on the enclosure and is dated 1983.

There are two large transformers, some model or part numbers, but
unfortunately no manufacturer name.

One transformer has a 7" x 8" steel square frame and it has two sets
of coils inside. One is a little over 5 inches in diameter and one
and a half inches long, the other is also about 5 in dia and about
3.5 inches long.

The main power is on the small coil and the output is on the larger
one. The output goes to 4 diodes to get DC, and to a 68,000 uf / 75
volt cap and above the cap is a label 48 Volts RMS. There is also a
100 ohm 55 watt resistor across the cap.

The smaller coil has 5 leads, 2 are connected to input power and the
large coil had 4 leads. 2 go to a set of diodes, I am sure to
rectify the AC to DC. the other 2 leads on the large coil go to a
small cap, 20uF 440 VAC. There is no connection between the two
coils so one must feed the other thru the frame.

Can anybody shed light on this thing ?
Obviously, my first question is how much power would such a large
transformer have ?
and my second question is can I use it to drive a herd of Gecko's ?
(a gaggle of Geckos?, flock...pack...)

Then why the 100 ohm across the cap ?

The other transformer is just a large unit, 5" x 6" on the frame and
4 inches dia on the coil and th coil is about 3.5 inches long. I
think I should be able to figure this one out. Just keep adding load
until it gets hot (?) 8 wires so I will have some fun figuring the
combinations out.

If anyone would like to see a pic, I could post some or e-mail.

Dave