Adjustment-free drive circuit for color television picture tubes
AssigneeSiemens Aktiengesellschaft
InventorWolfgang Haussman
Life of this patent
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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.
Claims3
Adjustment-free drive circuit for color television picture tubes, comprising 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, said reference value at the non-inverting input being compared in said amplifier with said actual value at said inverting input for issuing a signal at said output of said amplifier having the smallest possible difference between said desired and actual values, said output of said amplifier being connected to the control grid of a picture tube for applying said signal issued at said output thereto.
Dependencies are inferred from the claim text.