Caledonian Audio Phono Classique, Assembly Manual

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Caledonian Audio
Phono Classique Assembly Manual
11
11
Figure 1 - Integrated power supply PCB
2.1.1 Resistors
Start with placing and soldering all resistors on the board. Figure 2 Resistors
on the power supply PCB displays all resistors and their purposes.
Resistor Purpose Note
R1, R2,
R3 Dropper
resistor Place and solder them standing up (vertically).
R4, R5 Voltage divider
network R4, R5 and C5 forms a voltage divider network
which is used as a reference point to raise the
12VDC heater filament
R6 Bleeder (see
note) Do not populate R6.
R6 is there to enable you to add a bleeder
resistor as an alternative to the voltage divider
network (R4, R5 and C5 forms a voltage divider
network which is used to raise the 12VDC heater
filament).
Since we will be using the voltage divider
network, we no longer need to populate R6.
R7 12V line
dropper Please use a wirelink for R7.