High-low voltage automatic switching electronic switch circuit

• Main Author: GU GUOHUI
• Format: Patent
• Language: Chinese; English
• Published: 06.11.2018
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

The invention discloses a high-low voltage automatic switching electronic switch circuit. In the high-low voltage automatic switching electronic switch circuit, a switch circuit control part at a low-voltage low-current weak-current part controls picking up or releasing of a contact of a relay to switch on or switch off an L or N strong current circuit, concretely, comparison between alternating current rectified voltage and reference voltage is detected, when alternating current input is less than preset voltage, a relay coil drives the circuit to start, the contact of the relay picks up, anda double voltage boosted circuit works; and when the alternating current input is higher than set voltage, the relay coil has no current flowing through, the contact releases, and the double voltageboosted circuit stops working. Thus, a silicon-controlled electronic switch of which reliability is greatly higher than that of the existing scheme can be realized, and a reliable, low-cost, intelligent and automatic electroni