Control circuit for finely adjusting magnetic circuit induction level - has sequential logic circuit with comparator minimising frequency of bidirectional switching

摘要

The control circuit has devices ensuring bidirectional transfer or the absence of transfer of energy between the source and the magnetic circuit by switching these devices. The induction level is compared simultaneously with two or more levels and the result used to control at least three types of energy transfer: supplying energy to the magnetic circuit, returning energy to the source, and no transfer of energy. The control logic is sequential and designed so as to minimise the frequency of device switching.