TC-42PD1 - Panasonic TV Service Manual (repair manual). Page 10

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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.

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.

Fig. K

When sustain pulse is stopped, Ions and Electrons are
remained again as Wall voltage. However polarity of wall
voltage is reversed.

Fig. L

Positive polarity’s Sustain pulse is input between sustain and
scan electrodes and discharge start again.

++++

Vw

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++++

+++

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|   |   |

Vs

Vs + Vw

+++

|   |   |

+++

|   |   |

+++

|   |   |

Vs

Vs + Vw

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