Philips DPTV345 User Manual page 79

RGB Amplifiers
Figure 25
The output of 7600 is fed to the RGB amplifiers before being fed to the CRTs. Transistors 7720 and
7721 buffer the Blue output on Pin 42. The B-BIAS control voltage controls the gain of this circuit.
Transistors 7730 provide an additional voltage gain for the signal.
7710 and 7711 buffers the Green output from Pin 41 of 7600. The G-BIAS controls the gain of the
circuit.