Patent ID: 11949282
Assignee: LIAN ZHENG ELECTRONICS (SHENZHEN) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An offline uninterruptible power source, comprising:
a safety switch connected between an alternating-current input and an alternating-current output;
a transformer, wherein a first terminal of a primary side thereof is connected to a first terminal of the alternating-current output;
a first switch, a second switch and an output switch successively connected between the safety switch and a second terminal of the alternating-current output, wherein the first switch is operable to selectively connect the safety switch to either the second terminal or a tap of the primary side of the transformer, and wherein the second switch is operable to selectively connect the output switch to either the second terminal or the tap of the primary side of the transformer;
a third switch operable to selectively connect the safety switch to either the first switch or the second terminal of the alternating-current output, wherein selectively connecting the safety switch to the second terminal of the alternating-current output includes bypassing the first switch, the second switch, the output switch and the transformer; and
a bidirectional converter configured to controllably convert an alternating current of a secondary side of the transformer into a direct current so as to charge a rechargeable battery and to convert the direct current of the rechargeable battery into an alternating current.