Tianyi button indicator - button indicator induction circuit fault and solution

1. No output, the fuse is normal This phenomenon indicates that the switching power supply is not working or has entered the protection state. First of all, it is necessary to measure whether the starting pin of the power control chip has a starting voltage, if there is no starting voltage or the starting voltage is too low, it is necessary to check whether the starting resistance and the external components of the starting pin are ...

Conventional domestic travel switch LX19-001/111 in the LX19 series, LXK3-20S/T in the LXK3 series, JLXK1 series JLXK1-111/411/511 in the conventional travel switch are the most representative.

1. The basic conditions for the use of low-voltage isolation switches (1) The altitude does not exceed 1000 meters; (2) The ambient temperature is not higher than +40°C and not lower than -40°C; (3) The relative humidity is not more than 85% (relative to +20±5°C). 2. The low-voltage isolation switch is not suitable for the following ...

Generation and transmission of electromagnetic interference There are two ways of electromagnetic interference transmission: one is conducted transmission and the other is radiated transmission. Conducted transmission is a complete circuit connection between the interference source and the sensitive equipment, and the interference signal is transmitted to the receiver along the connected circuit.

1. Buttons 1. Red Operation in hazardous situations. It is often used for emergency stops Stop and break. It is often used to stop all machines, stop one or more motors, stop a certain part of a piece of equipment, make the electrical components lose power, and have a stop function reset button. ...

(1) Eddy current proximity switch This type of switch is sometimes called an inductive proximity switch. It is the use of conductive objects when they are close to the proximity switch to produce eddy currents inside the object. This eddy current reacts to the proximity switch, causing the internal circuit parameters of the switch to change, so as to identify the presence or absence of ...

Pre-stroke - indicates the distance or angle at which the actuator on the limit switch must move before tripping the switch contact Operating Point - Indicates the position of the actuator when the switch contact is moved to the working position Release Point - Indicates the position of the actuator when the contact returns to its original state Differential - ...

1. The high-voltage load switch can be broken with load and has the function of self-extinguishing arc, but its breaking capacity is very small and limited. 2. The high-voltage isolation switch is generally not able to break with load, there is no arc extinguishing cover in the structure, and there is also an isolation switch that can break the load.

(1) The disconnector should have an obvious disconnection point, which is easy to identify whether the electrical appliance is disconnected from the power grid. (2) There should be reliable insulation between the disconnect points of the disconnector, that is, there should be enough distance between the disconnect points of the disconnector to ensure that it can work reliably under harsh climatic conditions, and ...

Rated voltage: The rated voltage of the disconnector (KV) = the nominal voltage of the circuit * 1.2/1.1 times. Rated current: The standard value of rated current should be greater than 150% of the maximum load current. Rated Thermal Stability Current: Select a rated ...

1) Voltage Setting: Turn on the DC switch, adjust the voltage knob to adjust the voltage reading to the desired operating power connection. If you need to lower the voltage, turn the potentiometer slowly so that the drip rate of the voltmeter is compatible with the speed of the manual adjustment knob. 2) Constant Current Setting: Connect ...

1. Check the key points: 1) Whether the voltage at point B is 310V. 2) Whether the 15V voltage is normal. 3) Whether the voltage at point C is greater than 14V. 4) Whether the SS terminal of (8) pin IC6 is higher than 10V, whether the SD terminal of pin (10) is lower than 0.6V, and whether there is a square wave transmission at pin 13 and pin 14 ...

Conversion conditions: The purpose of requiring dual power supplies is to complete the automatic and reliable conversion of dual power supplies under "specific" circumstances. This "specific condition" is the conversion premise of the dual power supply, or the conversion condition, which is the primary consideration for choosing the dual power supply. A. In the event of a power failure ...

The working process of the main circuit of the linear power supply is that the input power supply is first converted into a DC power supply by the pre-regulated circuit after the initial AC voltage regulation, and then the linear adjustment element is finely adjusted under the intelligent control of the control circuit and the monolithic microprocessor controller, so that the ...

1. What are the common faults? Answer: The common faults of the disconnector are: (1) The contact part is overheated. (2) Porcelain insulation damage and flashover discharge. (3) Refuse to pull and close. (4) Wrong pulling and closing. 2. The overheating of the contact part of the disconnector during operation is caused by ...

An overview of limit switches Limit switch is a kind of mechanical orientation and electronic control interface, the mechanical action into electrical signals, is suitable for industrial environment of a common electromechanical and electrical components, through the contact way to detect the object, the existence and so on. It is possible to control the device's ...

LA42(V) series pushbutton switch is a new series of products independently developed by the senior technical team of VTeam Electric. It can be used in applications with rated insulation voltages up to 690V and nominal ratings of A600 (AC-15) and Q600 (DC-13). LA42(V) series pushbutton switches have a beautiful appearance ...

1. Altitude: 2000m and below; 2. Ambient temperature: -25°C-+40°C; 3. Relative humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%; 4. Places without conductive dust, corrosive gases and water vapors; 5. No fire ...

1) Clean the dust on the surface of the porcelain, check whether the surface of the porcelain is glazed or damaged, whether there are cracks and flashover marks, and whether the iron and porcelain joints of the insulator are firm. If the damage is severe, it should be replaced; 2) Wipe the oil stains on the blades, contacts or fingers with gasoline and check the contact ...

(1) Green (HG, GL) What it means: stands for Safety, Normal, Readiness (i.e., an indication under safe operating conditions or the readiness of a mechanical device to start). Function: It is often used to indicate the state of equipment ready to start, all auxiliary components are in a state of preparation for operation, and various parts ...