Constant bandwidth rgb output amplifiers having simultaneous...

Details Constant bandwidth rgb output amplifiers having simultaneous... Constant bandwidth rgb output amplifiers having simultaneous...

H - Electricity

04

N

350/61

H04N 9/20 (2006.01) H04N 9/73 (2006.01)

Patent

CA 1044359

ABSTRACT OF THE DISCLOSURE A color television receiver includes conventional circuitry for processing and detecting a received color tele- vision signal. Three chrominance-luminance matrices combine detected color difference and luminance signals forming color red, blue and green video signals. Emitter follower coupling stages apply the color video signals individually to each of three output amplifiers which in turn drive the cathode electrodes of a unitized gun CRT. Potentiometers couple the emitter electrodes of the output amplifiers to a source of operating potential providing a simultaneous signal gain and DC output voltage adjustment for each amplifier during CRT color temperature setup. A voltage divider controls the voltage applied to the common screen grid electrode of the CRT providing a master setup adjustment. - 1 -

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