Trix-motor for D.C., suitable for power supply from
accumulator or battery.
Voltage 4-8 volt. This one has a permanent horseshoe fieldmagnet.
Trix-motor for A.C., suitable for power supply from a transformer
of 8-12 volt.
The fieldmagnet is a electromagnet with spool.
The construction of the electric motors is very open, the principle and operation is
visible well.
213. Boring machine
209. Model differential