Title:
GEAR CONTROL CIRCUIT FOR ALTERNATING CURRENT MOTOR, SYSTEM, SWITCH CONTROLLER, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/193696
Kind Code:
A1
Abstract:
Provided in the present application are a gear control circuit for an alternating current motor and a system. The gear control circuit comprises: a plurality of controllable switches; a detection unit, which is used for detecting an on-off state of a corresponding controllable switch; a gear input unit, which is used for receiving an externally input target gear m; and a control unit, which is connected to the gear input unit to be used for acquiring the target gear m. The service life of a controllable switch is thereby improved. Further disclosed in the present application are a switch controller and an electronic device. Same comprises a signal modulation circuit, a signal follower circuit, a comparison circuit, and a switch control circuit, the switch controller can perform digital-to-analog conversion by means of the signal modulation circuit, so as to modulate a first PWM signal of a data signal, and obtain a second PWM signal of an analog signal; then, same performs load amplification on the modulated second PWM signal by means of the signal follower circuit. The problem of controlling the starting and stopping of an electronic device by means of a PWM signal being inconvenient is ameliorated.
Inventors:
RAN HONGYU (CN)
ZHANG YAN (CN)
LIU YIGANG (CN)
WEI MINGMING (CN)
LI HONGQIANG (CN)
ZHANG YAN (CN)
LIU YIGANG (CN)
WEI MINGMING (CN)
LI HONGQIANG (CN)
Application Number:
PCT/CN2021/130361
Publication Date:
September 22, 2022
Filing Date:
November 12, 2021
Export Citation:
Assignee:
BEIANG AIR TECH LTD (CN)
International Classes:
H03K7/08; H02P25/16
Foreign References:
| CN108390613A | 2018-08-10 | |||
| CN209795173U | 2019-12-17 | |||
| CN205265646U | 2016-05-25 | |||
| CN208401817U | 2019-01-18 | |||
| JP2001071906A | 2001-03-21 | |||
| US20070013332A1 | 2007-01-18 | |||
| US20120223690A1 | 2012-09-06 | |||
| CN109475029A | 2019-03-15 | |||
| CN113067525A | 2021-07-02 | |||
| CN112953478A | 2021-06-11 |
Attorney, Agent or Firm:
CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)
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