Adjustment-free drive circuit for color television picture tubes

Details Adjustment-free drive circuit for color television picture tubes Adjustment-free drive circuit for color television picture tubes

1983-02-10

1985-10-01

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 920

Patent

active

045449473

ABSTRACT:
Adjustment-free drive circuit for color television picture tubes, including an amplifier having a non-inverting input receiving an equalized signal of an individual color component red, green or blue as a reference value, an inverting input receiving a voltage proportional to the actual value of the cathode current, and an output, the reference value at the non-inverting input being compared in the amplifier with the actual value at the inverting input for issuing a signal at the output of the amplifier having the smallest possible difference between the desired and actual values, the output of the amplifier being connected to the control grid of a picture tube for applying the signal issued at the output thereto.

REFERENCES:
patent: 4053927 (1977-10-01), Schmidtmann

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