CHAPTER 4: ELECTRICS 4-8
ALPHA 538/552
(6) Transformer 24V DC (T2)
The power supply converts AC 220 V to 24V DC for the low voltage circuit.
(7) PCB (Printed Circuit Board)
PCB is a board with circuit printed and electrical components welded on the surface. It offers sockets and
terminals for electrical components like relays, cables and fuses.
Designation Description
A 220V AC input terminals
B 24V DC output terminals
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