Title:
CONTROL CIRCUIT FOR MULTI STANDBY VOLTAGE SWITCHING OF SILICON CONTROLLED RECTIFIER
Document Type and Number:
WIPO Patent Application WO/2018/040586
Kind Code:
A1
Abstract:
Disclosed is a control circuit for multi standby voltage switching of a silicon controlled rectifier. The control circuit comprises a first silicon controlled rectifier control circuit module (TRIAC1) for outward output, a second silicon controlled rectifier control circuit module (TRIAC2) for outward output, a first isolation controlling relay (JD1), a second isolation controlling relay (JD2) and an ICU detection circuit (DL1). The two silicon controlled rectifier control circuit modules (TRIAC1, TRIAC2) are respectively connected to the two isolation controlling relays (JD1, JD2) so as to provide control signals. The ICU detection circuit (DL1) is respectively connected to the two isolation controlling relays (JD1, JD2) so as to provide alternate time-delay control signals. Output ends of the first silicon controlled rectifier control circuit module (TRIAC1) and the second silicon controlled rectifier control circuit module (TRIAC2), and input ends of the first isolation controlling relay (JD1) and the second isolation controlling relay (JD2) are connected to the same node. A power source of the control circuit realizes ordered work by means of a working relation between voltage differences, and performs isolation control by means of a signal-type relay. Neither a switch from a low voltage to a high voltage or a switch from a high voltage to a low voltage of an output and conversion silicon controlled rectifier will enable the other silicon controlled rectifier to be in an instant conductive state.
Inventors:
ZENG WEIJIAN (CN)
Application Number:
PCT/CN2017/081162
Publication Date:
March 08, 2018
Filing Date:
April 20, 2017
Export Citation:
Assignee:
GUANGDONG NRE TECHNOLOGY CO LTD (CN)
International Classes:
H02H11/00
Foreign References:
| CN106229963A | 2016-12-14 | |||
| CN206135412U | 2017-04-26 | |||
| CN104868585A | 2015-08-26 | |||
| CN205029424U | 2016-02-10 | |||
| US20130241628A1 | 2013-09-19 |
Attorney, Agent or Firm:
RONGYUE PATENT AGENT CO.,LTD (CN)
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