Toxic gas alarm circuit diagram
Source: InternetPublisher:李商隐身 Keywords: Security aviation circuit alarm circuit diagram Updated: 2020/04/12
In the circuit shown in the figure, MQK-2 is a gas sensor. Normally, the resistance at both terminals A and B is very large, and the circuit is in a static state. When the gas sensor comes into contact with toxic and flammable gases, the resistance at both ends A and B decreases rapidly, and the potential at point B increases and charges C. When the charging potential on C reaches the U850 conduction potential, BG turns on, and the IC gets Call the police. When the toxic gas in the air decreases, the circuit can automatically reset. If the BG load is changed to a relay, this circuit can drive loads such as ventilation fans.
- Method for converting a spark ignition system to an enhanced sequential spark ignition system for a 6-cylinder engine
- Design of hydroponic farm based on IoT
- Binary clock design based on FPGA
- How to calculate the power loss of RS-485 transceiver THVD1550
- One control two constant pressure water supply frequency conversion speed control circuit b
- Secret code lock circuit
- Disconnected anti-theft alarm circuit (1)
- Catillac luggage compartment opening circuit diagram
- Electronic ventriloquist circuit
- Simple temperature control circuit diagram
- Design of circuit module of fingerprint identification system based on FPGA
- Circuit design of automobile fingerprint alarm system using GSM wireless communication network
- Car anti-theft system module circuit design based on fingerprint recognition
- Intelligent fire alarm system circuit module design drawing
- Fingerprint recognition car anti-theft system module circuit diagram
- Video surveillance system terminal circuit diagram
- Temperature alarm circuit diagram
- Principle circuit diagram of password electronic switch
- Sound activation switch circuit diagram
- Disconnected anti-theft alarm circuit diagram
京公网安备 11010802033920号