Technicolor - Thomson ICC19, Principles And Maintenance

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TP060 ENVIRONMENT
OUTPUT STAGE
The output stage of the TEA2261 consists of a push-pull.
It supplies the basic current for control of TP060, and then channels the
reverse locking current caused by the discharging of CP040.
In the conduction phase, Resistor RP054 limits the polarisation current.
TP060 SWITCHING CIRCUITS
Resistors RP029 through RP032 pre-charge CP040 as soon as power is
switched on, to ensure an adequate reverse locking current during the start-
up phase and at the beginning of each burst. Self-induction coil LP040 sets
the dl/dt of the control current reversal.
The circuit DP022, CP023, RP022 slows the rise in collector voltage of
TP060 when it is blocked, to ensure minimum dissipation through switching,
and to limit the overvoltage peak. To do this, it is assisted by the secondary
assembly DP113, LP112, RP112, CP112, and DP112.
NOTES :
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