Provides a.c. outputs of 12 V 21 W for the illuminant together
with a continuously variable d.c. output of upto 6 V for the
motor. Housed in a stout sheet metal case. Front panel
provided with color coded 4 mm socket terminals. Mains
input via 3 m of three core cable for use on 220 V 50 Hz A.C.
supplies. Dimensions 150x130x110 mm high.
Electric bell 6 V D.C. suspended in bell jar. Connections by
two socket terminals fitted to a coiled wire which passes
through a rubber bung which seals the mouth of bell jar.
Consist of nineteen spheres of 10 mm diameter mounted on
steel rod of length 75 mm with collar for attachment to a
horizontal 300 mm shaft which rotates in two metal pillars
mounted on a wooden base. Movement can be observed by
rotating the handle.
