User Manual

Unit 4 – 50W Exciter
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6. 50W amplifier:
6.1. Function:
The 50W exciter amplifier stage, receives the 2W amplifier signal and delivers it to 1:4 divider of
250W amplifiers with a maximum 50W power.
6.2. Technical characteristics:
Input power: ____________________________________________________________ 2W (Sync and Audio carrier)
Output power: ______________________________________________________________________ 50W Peak Sync
Gain: ________________________________________________________________________________________ 18 dB
Supply: _____________________________________________________________________________________ +32Vdc
Total current: ___________________________________________________________________________________ 5 A
Setting temperature:___________________________________________________________________________ 56°C
6.3. Technical Description:
This module is composed by a LDMOS transistor.
Trimpot R4 sets the quiescent current of Q1 and D1 allows controlling the output power for
protection purposes.