# US 2019/0356237 A1 · Voltage converter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0356237 A1 - Document ID: US20190356237A1 - Status: Published application - Kind: A1 - Application number: 16/469,705 - Filed: 2017-12-05 - Published: 2019-11-21 - Earliest claimed: 2016-12-22 - Assignees: Tridonic GmbH & Co KG - Applicants: Tridonic GmbH & Co KG - Inventors: Egbert Mao; Scotty Zhong; Steven Chen; David Zhang - Web page: https://patentgrep.com/patent/US20190356237A1 ## CPC - H02M 7/217: using semiconductor devices only - H02M 1/44: Circuits or arrangements for compensating for electromagnetic interference in converters or inverters - H05B 45/37: Converter circuits - H02M 1/0009: {Devices or circuits for detecting current in a converter} - H02M 1/123: {Suppression of common mode voltage or current} - H02M 1/126: {using passive filters} - H02M 7/125: {Avoiding or suppressing excessive transient voltages or currents} - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract An embodiment of the present application provides a voltage conversion device configured to convert an inputted alternating voltage into a direct voltage or current, the voltage conversion device including at least a first voltage connector and a second voltage connector, where the alternating voltage is fed to the voltage conversion device via either the first voltage connector or the second voltage connector, the voltage conversion device further including: an electromagnetic filter unit; a conversion unit; a determination unit configured to determine which one of the first voltage connector and the second voltage connector is used to feed the alternating voltage into the voltage conversion device; a control unit controlling the conversion unit based on a determination result of the determination unit such that the direct voltage or current outputted by the conversion unit corresponds to the determination result, wherein the determination unit is electrically connected the first voltage connector and the second voltage connector. This application can determine a voltage connector for feeding via a simple circuit and can perform corresponding control to output a corresponding direct voltage or current. ## Claims ### Claim 1 A voltage conversion device configured to convert an inputted alternating voltage into a direct voltage or current, the voltage conversion device including at least a first voltage connector and a second voltage connector, where the alternating voltage is fed to the voltage conversion device via either the first voltage connector or the second voltage connector, the voltage conversion device further including: an electromagnetic filter unit configured to electromagnetically filter an inputted alternating voltage; a conversion unit configured to convert the voltage which has been electromagnetically filtered by the electromagnetic filter unit into a direct voltage or current and output the same; a determination unit configured to determine which one of the first voltage connector and the second voltage connector is used to feed the alternating voltage into the voltage conversion device; and a control unit controlling the conversion unit based on a determination result of the determination unit such that the direct voltage or current outputted by the conversion unit corresponds to the determination result, wherein the determination unit is electrically connected the first voltage connector and the second voltage connector. ### Claim 2 (depends on 1) The voltage conversion device according to claim 1, wherein, the determination unit includes a first switch element Q1 and a second switch element Q2, when the alternating voltage is fed to the voltage conversion device via the first voltage connector, both of the first switch element Q1 and the second switch element Q2 are turned off; and when the alternating voltage is fed to the voltage conversion device via the second voltage connector, the first switch element Q1 is periodically turned on and the second switch element Q2 is kept turned on. ### Claim 3 (depends on 2) The voltage conversion device according to claim 2, wherein, the determination unit further has a first diode D1 and a second diode D2, wherein the first diode D1 and the second diode D2 are connected in parallel between the first voltage connector and the second voltage connector, when the alternating voltage is fed to the voltage conversion device via the first voltage connector, both of the first diode D1 and the second diode D2 are turned off; and when the alternating voltage is fed to the voltage conversion device via the second voltage connector, the first diode D1 and the second diode D2 are alternately conducting forward in accordance with a flow of the alternating current. ### Claim 4 (depends on 3) The voltage conversion device according to claim 3, wherein, the first switch element Q1 is bipolar transistor, a base of the bipolar transistor is electrically connected to the second voltage connector via a first resistor R1 and an emitter of the bipolar transistor is electrically connected to the first voltage connector. ### Claim 5 (depends on 4) The voltage conversion device according to claim 4, wherein, a collector of the bipolar transistor is grounded via a second resistor R4. ### Claim 6 (depends on 5) The voltage conversion device according to claim 5, wherein, when the alternating voltage is fed to the voltage conversion device via the second voltage connector, a voltage difference across the second resistor R4 causes the second switch element Q2 turned on. ### Claim 7 (depends on 6) The voltage conversion device according to claim 6, wherein, the determination unit further has a capacitor C1, when the alternating voltage is fed to the voltage conversion device via the second voltage connector, the capacitor C1 maintains the voltage difference across the second resistor R4. ### Claim 8 (depends on 6) The voltage conversion device according to claim 6, wherein, second switch element Q2 is a metal oxide semiconductor field effect (MOS-FET) transistor, and a gate of the metal oxide semiconductor field effect (MOS-FET) transistor and an ungrounded end of the second resistor R4 are electrically connected.