Monolithic CRT video power amplifier system
 A monolithic power amplifier system is described which comprises a biasing system 50, transconductance amplifier circuit 42 and a transimpedance amplifier circuit 44 biasing network 50 is operable to generate a bias voltage which is used by the transimpedance amplifier 44. The transimpedance amplifier 44 receives an input current signal from the transconductance amplifier 42. The changes in the input current are communicated to a pull-up transistor 184 and a pull-down transistor 190 which drive an output voltage V.sub.OUT at sufficient levels to power the cathode of an electron gun of a video system. 
Texas Instruments Incorporated
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William Y. W. Chung-Ming Danny
Tang Chou Tsong