Wall Voltage; Sustain Step 1; Sustain Step 3 - Panasonic TC-42P1 Service Manual

Wall Voltage

Fig. I
when input pulses are stopped, Ions and Electrons which are
charged on the dielectric around the electrodes are
remained.
This charge is called Wall Voltage (Pilot voltage).
This operation is called Write .

Sustain Step 1

Vs + Vw
Fig. J
Negative polarity's Sustain pulse is input between sustain
and scan electrodes and voltage potential between two elec-
trodes becomes sum of Sustain pulse and wall voltage.
Then discharge start.
Vw
Vs
Sustain Step 2
When sustain pulse is stopped, Ions and Electrons are
remained again as Wall voltage. However polarity of wall volt-
age is reversed.

Sustain Step 3

Positive polarity's Sustain pulse is input between sustain and
scan electrodes and discharge start again.
- 5 -
Fig. K
Vs + Vw
Vs
Fig. L