R.V.R. Elettronica PTX-LCD, User Manual

Page: 50 / 62

PTX-LCD
46 / 58 User Manual Rev. 2.3 - 18/07/07
11.1 Power supply
The power supply is composed of two sections.
The first one is dedicated to the finale amplifier. It is a switch mode power supply
fastened to a heat sink (Fig. 10-1 9). In the 30 W version, there is a second
switching power supply of the same kind under the first one.
Figure 11-2
The second section (Fig. 11-3) is the board fixed to a heatsink in the central part of
the exciter (Fig 10-1 7). This board contains the power supply for the different
boards of the exciter (audio, CPU, ...), the section that manages the analog input
from the “Remote” connector and the Automatic Gain Control for the output power
level management.
D52
D53
D58
D54
D55
D57
R98
R30
R51
R39
R35
R35
JP6
R17
R18
Figure 11-3