Three-phase motor phase loss automatic protection circuit
Source: InternetPublisher:酷到被通缉 Keywords: Three-phase motor automatic protection protection circuit transistor Updated: 2021/07/30
Working principle of the circuit: When the three-phase wires of the motor are passed through a transformer at the same time,
the inductive voltage is O. When one phase is missing, or two or three phases are seriously unbalanced, the induced voltage of the transformer rises rapidly, and a transistor base current
is generated after rectification. The transistor is immediately
saturated and conducts, and the relay K is electrically closed, and the normally closed contact The point is disconnected, the contactor coil loses power,
the contacts are disconnected, and the motor loses power and stops running. The action time does not exceed Is.
- Manual automatic air compressor control circuit
- One-way rotation circuit of motor controlled by contactor
- Hydraulic control circuit design and analysis
- Light-controlled circuit design and analysis
- Temperature control circuit design and analysis
- Design and production of no-load automatic power-off device for household power supply
- An experimental model of an infrared radio alarm
- Rolling door anti-theft device
- Travel burglar alarm
- Automatic controller for electric iron
- H-bridge drive circuit schematic diagram and enable control and direction logic
- A single-section transistor performance test circuit
- White noise electronic lullaby circuit diagram
- 3 and 1/2 digit digital thermometer using triode as degree sensor
- Composite complementary symmetrical push-pull output stage circuit
- Composite pipe b
- Improved multivibrator circuit a
- Interface circuit between power supply coupler and triode b
- Fuse blown sound and light alarm circuit 4
- Simple buzzer circuit 4a
京公网安备 11010802033920号