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All components of the motherboard except step-up transformer are available on the market. The step-up transformer must be assembled per specifications.

The transformer has the following roles:
-*to accumulate energy while the switching transistor is in the on state and release that energy to the high-voltage cascade when the switching transistor goes to the off state;
-*to provide step-up voltage transformation from the low-voltage input to the high-voltage cascade and
-*to provide galvanic insulation between the low-voltage input and the high-voltage cascade.
+* to accumulate energy while the switching transistor is in the on state and release that energy to the high-voltage cascade when the switching transistor goes to the off state;
+* to provide step-up voltage transformation from the low-voltage input to the high-voltage cascade and
+* to provide galvanic insulation between the low-voltage input and the high-voltage cascade.
Windings:
(1) The primary and the secondary are to be wound on the coil former.
(2) The total number of turns for the primary winding is 4.
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