Abstract: A signal amplifier arrangement comprises first and second differential amplifiers coupled in common to a current source which supplies all of the current to the amplifier circuits. Signals to be amplified are coupled between the control electrodes (bases) of the devices in each of the differential circuits by means of voltage follower stages. The main conduction path (collector-emitter) of each of the followers is coupled in series with the main conduction path of the device in the first differential circuit other than the one to the control electrode of which the follower output is coupled. Output signal current is produced in one or more load circuits connected to the second differential circuit, the output signal current being related to the differential input signal voltage but substantially independent of current level induced base-emitter voltage variations in the differential amplifier devices.

Abstract: Cascaded multipliers are coupled to a source providing a periodic sawtooth deflection waveform, the amplitude of which varies with variations in the high voltage applied to an accelerating anode of a kinescope. The sawtooth signal is cubed by the cascaded multipliers and multiplied by the inverse square of a voltage which varies with changes in the kinescope anode potential. The system thus incorporates S-correction and means for correcting the deflection waveform to compensate for changes in the high voltage supplied to the kinescope anode.