JOVYATLAS electrical components Germany JOVYATLAS model JOVYATLAS price

JOVYATLAS electrical components are switches controlled by electromagnets, that is, a combination of an electromagnet and a switch. When the electromagnet coil is energized, it generates electromagnetic attraction, causing the movable iron core to push or pull the switch contacts to close, thereby connecting the controlled circuit. Electromagnetic switches are widely used in various industries, most commonly as contactors in the industrial sector. An electromagnetic switch is the control switch on a starter motor and is one of the three major components of a starter (DC motor, transmission engagement mechanism, electromagnetic switch). Its working principle is that when the coil is energized, it generates electromagnetic attraction, causing the movable iron core to move, thereby on one hand pulling the transmission engagement mechanism to move the starter pinion forward to engage with the engine flywheel ring gear, and on the other hand pushing the switch contacts to connect, enabling the DC motor to operate and thus driving the engine to start.

JOVYATLAS electrical component principle

The Hall voltage changes with the magnetic field strength; the stronger the magnetic field, the higher the voltage, and the weaker the magnetic field, the lower the voltage. The Hall voltage value is very small, typically only a few millivolts, but after amplification by an amplifier in an integrated circuit, the voltage can be amplified enough to output a stronger signal. To make the Hall integrated circuit function as a sensor, mechanical methods are required to change the magnetic field strength. A rotating impeller is used as a switch to control magnetic flux. When the impeller blades are in the air gap between the magnet and the Hall integrated circuit, the magnetic field deviates from the integrated chip, and the Hall voltage disappears. In this way, the change in the output voltage of the Hall integrated circuit can indicate a certain position of the impeller drive shaft. Using this working principle, the Hall integrated circuit chip can be used as an ignition timing sensor. Hall effect sensors belong to passive sensors; they require an external power supply to work. This characteristic enables them to detect low-speed operating conditions.

JOVYATLAS electrical component principle

The thermistor will remain in a non-operating state for a long time; when the ambient temperature and current are in the c region, the heat dissipation power of the thermistor is close to its heating power, so it may or may not operate. For a thermistor at the same ambient temperature, the operating time decreases sharply as the current increases; a thermistor at a relatively higher ambient temperature has a shorter operating time and smaller holding current and operating current. The PTC effect refers to a material having the PTC effect, i.e., the positive temperature coefficient effect, which means that the resistance of this material increases with rising temperature. For example, most metal materials exhibit the PTC effect. In these materials, the PTC effect manifests as a linear increase in resistance with increasing temperature, which is commonly referred to as the linear PTC effect. Non-linear PTC effect: Materials undergoing phase transition exhibit a phenomenon where resistance increases sharply by several to more than ten orders of magnitude within a narrow temperature range, i.e., the non-linear PTC effect. Many types of conductive polymers exhibit this effect, such as polymer PTC thermistors. These conductive polymers are very useful for manufacturing overcurrent protection devices. Polymer PTC thermistors are used for overcurrent protection. Polymer PTC thermistors are often called self-resetting fuses (hereinafter referred to as thermistors). Due to their unique positive temperature coefficient resistance characteristics, they are extremely suitable for use as overcurrent protection devices. The method of using a thermistor is similar to that of a ordinary fuse, connected in series in the circuit. When the circuit operates normally, the thermistor temperature is close to room temperature, and the resistance is very small, so connecting it in series does not hinder current flow. However, when an overcurrent occurs due to a circuit fault, the thermistor's temperature rises due to increased heating power. When the temperature exceeds the switching temperature, the resistance increases dramatically instantly, and the current in the loop rapidly decreases to a safe value. After the thermistor operates, the current in the circuit is significantly reduced. t is the operating time of the thermistor. Due to the good designability of polymer PTC thermistors, their sensitivity to temperature can be adjusted by changing their own switching temperature (ts), so they can simultaneously provide over-temperature and overcurrent protection, suitable for overcurrent and over-temperature protection of lithium-ion and nickel-metal hydride batteries. Influence of ambient temperature on polymer PTC thermistors: A polymer PTC thermistor is a direct-heating, step-type thermistor. Its resistance change process is related to its own heating and heat dissipation conditions, so its holding current, operating current, and operating time are affected by ambient temperature.

JOVYATLAS electrical component applications

SMD inductors are electromagnetic induction components made by winding insulated wire. They belong to commonly used inductor components. Function of SMD inductors: Passing DC and blocking AC is a simple description; they isolate and filter AC signals or form resonant circuits with capacitors, resistors, etc. Tuning and frequency selection function of inductors: An inductor coil connected in parallel with a capacitor can form an LC tuning circuit. Any current in the circuit passing through an SMD inductor generates a magnetic field, and the magnetic flux of the magnetic field acts on the circuit. When the current passing through the SMD inductor changes, the DC voltage potential generated in the SMD inductor will oppose the change in current. When the current passing through the inductor coil increases, the self-induced electromotive force generated by the inductor coil is opposite to the direction of the current, opposing the increase in current, while converting part of the electrical energy into magnetic energy stored in the inductor. When the current passing through the inductor coil decreases, the self-induced electromotive force is in the same direction as the current, opposing the decrease in current, while releasing the stored energy to compensate for the decrease in current. Therefore, after inductive filtering, not only are the ripples of the load current and voltage reduced and the waveform smoothed, but the conduction angle of the rectifier diode also increases. Inductor function 1: Color-ring inductors have a current-blocking effect: The copper core in the color-ring inductor coil always opposes changes in the current in the coil. Color-ring inductors have an obstructive effect on AC current used in circuits. The magnitude of this obstruction is called inductive reactance XL, with the unit being Ohms. Its relationship with inductance L and AC frequency f is XL=2πfL. Color-ring inductors can be mainly divided into high-frequency choke coils and low-frequency choke coils. Inductor function 2: Color-ring inductors have tuning and frequency selection functions: A color-ring inductor connected in parallel with an electrolytic capacitor can form an LC tuning circuit. At resonance, the inductive reactance and capacitive reactance of the circuit are equal in magnitude but opposite in direction. That is, if the natural oscillation frequency f0 of the circuit is equal to the frequency f of the non-AC signal, the inductive reactance and capacitive reactance of the loop are also equal. The usage of color-ring inductors is generally not very high, and color-ring inductors used in circuits are generally quite stable. Inductor function 10: The main uses of color-ring inductors include signal screening, noise filtering, current stabilization, and suppression of electromagnetic wave interference. The basic function of a color-ring inductor is charging and discharging, but many circuit phenomena derived from this basic charging and discharging function give color-ring inductors various different uses. Today, color-ring inductors are widely used by customers, and the role played by these small inductors should not be underestimated.

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