High Voltage P
A CCF tube needs high voltage. The starting voltage is generally over 1,000 volts and
th
tween 200 and 500 volts rms.
Most CCFT DC to AC inverters are tuned switchers designed to produce a specific
voltage, frequency and output current when a designated tube is connected to the
output. The classic current-fed two-transistor inverter has a tuned resonating output,
tuned resonating input and inductive dc input which provides for good power transfer
The type of circuit depicted in Figure 6 inherently produces a pure sine-wave output, but
the voltage and current waveforms are both distorted when they are applied to a CCF
tube, which is a highly nonlinear device. The transition from the starting voltage to the
operating v
ented by a small internal series output
ca
st, pro
g imped
er tube
current a
en ignited.
ower Supply
e operating voltage is generally be
and high operating efficiency.
Figure 33
oltage in this circuit is implem
pacitor, which serves as the balla
fter the tube has be
vidin
ance, and allowing prop
47
