KYORITSU electrical components Germany KYORITSU model KYORITSU price

KYORITSU electrical components are resistive elements with three terminals, whose resistance can be adjusted according to a specific variation law. A potentiometer typically consists of a resistive element and a movable wiper. When the wiper moves along the resistive element, a resistance value or voltage proportional to the displacement is obtained at the output. A potentiometer can be used as a three-terminal component or as a two-terminal component. The latter can be regarded as a variable resistor; since its function in a circuit is to obtain an output voltage that has a certain relationship with the input voltage (applied voltage), it is called a potentiometer. A potentiometer is a type of variable resistor. It usually consists of a resistive element and a rotating or sliding system, i.e., a moving contact moves on the resistive element to obtain a partial voltage output. The function of a potentiometer is to adjust voltage (including DC voltage and signal voltage) and current magnitude. Structural features of a potentiometer: The resistive element of a potentiometer has two fixed terminals. By manually adjusting the shaft or slider, the position of the moving contact on the resistive element is changed, thereby changing the resistance between the moving contact and any fixed terminal, thus altering the voltage and current magnitudes. A potentiometer is an adjustable electronic component. It consists of a resistive element and a rotating or sliding system. When a voltage is applied across the two fixed contacts of the resistive element, rotating or sliding the system changes the position of the contact on the resistive element, yielding a voltage between the moving contact and the fixed contact that is proportional to the position of the moving contact. It is mostly used as a voltage divider, in which case the potentiometer is a four-terminal component. A potentiometer is essentially a sliding rheostat, available in several styles, generally used for volume control in speakers and power adjustment for laser heads. A potentiometer is an adjustable electronic component. It is a variable resistor used for voltage division. One or two movable metal contacts are pressed tightly against the exposed resistive element. The contact position determines the resistance between either end of the resistive element and the contact. Classified by material: wire-wound, carbon film, and solid-core potentiometers; classified by the relationship between the output-to-input voltage ratio and the rotation angle: linear potentiometers (linear relationship) and functional potentiometers (curvilinear relationship). Main parameters include resistance, tolerance, and rated power. Widely used in electronic equipment, such as for volume control in audio systems and receivers.

KYORITSU electrical component characteristics

The so-called dynamic characteristics refer to the output characteristics of a sensor when the input changes. In practical work, the dynamic characteristics of a sensor are often expressed by its response to certain standard input signals. This is because the sensor's response to standard input signals is easy to determine experimentally, and there is a certain relationship between its response to standard input signals and its response to arbitrary input signals; often, knowing the former allows inference of the latter. The most commonly used standard input signals are step signals and sinusoidal signals, so the dynamic characteristics of sensors are also often expressed by step response and frequency response.

KYORITSU electrical component composition

Internal accessories of circuit breakers: Auxiliary contacts are contacts mechanically linked to the opening and closing mechanism of the circuit breaker's main circuit. They are mainly used to indicate the open/closed status of the circuit breaker. Connected in the control circuit of the circuit breaker, they implement control or interlocking of related electrical devices through the opening and closing of the circuit breaker. Alarm contacts are used for accident alarms in circuit breakers. These contacts only operate after the circuit breaker trips and opens. They are mainly used when the circuit breaker load experiences faults such as overload, short circuit, or undervoltage, causing free tripping. The alarm contact switches from its normally open position to a closed position, connecting indicator lights, electric bells, buzzers, etc., in the auxiliary circuit to display or alert the fault trip status of the circuit breaker. Since the probability of free tripping due to load faults is not high. Shunt release: A shunt release is a release device excited by a voltage source, and its voltage is independent of the main circuit voltage. A shunt release is an accessory for remote opening operation. When the power supply voltage is any value between 70% and 110% of the rated control power supply voltage, the circuit breaker can reliably open. The shunt release operates in short-time duty; the coil energization time generally must not exceed 7S, otherwise the coil will burn out. To prevent coil burnout in molded case circuit breakers, a microswitch is connected in series with the shunt release coil. When the shunt release pulls in via the armature, the microswitch switches from normally closed to normally open. Since the control circuit for the shunt release power is cut off, even if the button is held down manually, the shunt coil will not be energized again, thus avoiding coil damage. When the circuit breaker is reset and closed, the microswitch returns to the normally closed position. Undervoltage release: An undervoltage release is a release device that causes the circuit breaker to open with or without delay when its terminal voltage drops to a specified range. Under thermal conditions, it must ensure reliable closure of the circuit breaker. Therefore, when a certain voltage drop occurs in the power supply voltage of the protected circuit, it can automatically open the circuit breaker to cut off power, protecting downstream load appliances or electrical equipment from undervoltage damage. During use, the undervoltage release coil is connected to the power side of the circuit breaker; the circuit breaker can only close after the undervoltage release is energized.

KYORITSU electrical component principle

The basic principle of a multimeter is to use a sensitive moving-coil DC ammeter (microammeter) as the meter movement. When a small current passes through the meter movement, it provides a current indication. However, the meter movement cannot handle large currents, so resistors must be connected in parallel and series with the meter movement for current shunting or voltage dropping, thereby enabling the measurement of current, voltage, and resistance in the circuit. In a digital multimeter, the conversion circuit converts the measured quantity into a DC voltage signal, which is then converted from an analog voltage to a digital value by an analog-to-digital (A/D) converter. The digital value is counted by an electronic counter, and the measurement result is directly displayed numerically on the screen. The functions for measuring voltage, current, and resistance in a multimeter are implemented by the conversion circuit. Current and resistance measurements are based on voltage measurement; that is, a digital multimeter is an extension of a digital DC voltmeter. In a digital DC voltmeter, the A/D converter transforms the continuously varying analog voltage over time into a digital value, which is then counted by an electronic counter to obtain the measurement result, and the decoding display circuit presents the result. The logic control circuit coordinates the operation of the circuits, completing the entire measurement process sequentially under the action of the clock.

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