DF3/FF3 MANUAL
21
118018-001
Rev E
optocouplers and open collector type signals for
remote connection.
4.9
FILAMENT POWER PWB
The power for the X-ray tube is provided by the
filament inverter. The filament inverter is a high
frequency, series resonant inverter. The inverter
provides regulated current to the primary of the
filament isolation transformer. The filament
isolation transformer secondary is connected to
the output connector. For the DC filament option,
the transformer secondary is connected to a full
wave rectifier and then to the output connector.
4.10
OPTIONS
Due to many variations of models and options
provided in the DF3/FF3 series, details of actual
circuits used may differ slightly from above
descriptions. Consult Spellman’s Engineering
Department for questions regarding the principles
of operation for the DF3/FF3 series.
