System for compensating for transfer characteristic variations o

Details System for compensating for transfer characteristic variations o System for compensating for transfer characteristic variations o

1980-07-21

1982-08-10

Hubler, Malcolm F.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315366, 315367, H01J 2952

Patent

active

043440215

ABSTRACT:
The minimum output level of an electron gun driven at discrete voltage levels is precisely established. A target value slightly above the minimum voltage level is compared with the actual value. The result of the comparison is used to uniformily establish the minimum electron gun drive voltage and thus compensates for electron gun transfer characteristic differences and variations within the gun drive circuitry. An additional circuit utilizing a target value slightly below the maximum voltage can be used to establish the maximum output level of the electron gun.

REFERENCES:
patent: 4080630 (1978-03-01), Marlowe
patent: 4086579 (1978-04-01), Easter
patent: 4121137 (1978-10-01), Credelle
patent: 4126814 (1978-11-01), Marlowe
patent: 4234825 (1980-11-01), Gange
patent: 4251755 (1981-02-01), Bryden
patent: 4271377 (1981-06-01), Gange et al.

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