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Power control diode for intelligent control of circuit output power

A circuit output and intelligent control technology, which is applied to circuits, resistors, electrical components, etc., can solve problems such as large current fluctuations, too fast total output power drop, and too fast total output power rise, so as to prevent overvoltage or overvoltage flow damage, reduce production and material costs, and control circuit power effects

Inactive Publication Date: 2014-11-12
王会锋 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the temperature coefficient of the PTC is too large, the total output power will drop too fast when the voltage at both ends of the circuit rises, and the total power in the circuit cannot be kept constant; if the temperature coefficient of the PTC is too small, when the voltage at both ends of the circuit rises, the total The output power climbs too fast, and the total power in the circuit cannot be kept constant
3. Under a certain current value, the PTC element cannot ensure that it reaches the working area quickly and stably after being turned on, that is, the current fluctuates too much before and after stabilization, and it cannot ensure that the PTC temperature is equal to or exceeds its Curie temperature.

Method used

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  • Power control diode for intelligent control of circuit output power
  • Power control diode for intelligent control of circuit output power
  • Power control diode for intelligent control of circuit output power

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Embodiment Construction

[0023] Hereinafter, the present invention will be further described by taking the LED lighting circuit as an example in conjunction with the accompanying drawings.

[0024] Such as Figure 1-3 As shown, the present invention is composed of a resistor 2 with a small temperature coefficient, a PTC1 with a positive temperature coefficient, a PTC3 with a negative temperature coefficient, and an electrode 4 connected in series.

[0025] Such as Figure 4-6 As shown, a metal oxide resistor 2 with a small temperature coefficient is produced, with a thickness of 1.2 mm and a diameter of 5 mm. The resistance at room temperature is about 1000 ohms. Conductive electrodes 4 are formed on both sides of the chip, and a positive temperature coefficient resistor with a small temperature coefficient is produced. Ceramic PTC1, the thickness is 1.2mm, the diameter is 5mm, the resistance value at room temperature is about 1-10 ohms, the Curie temperature is 50°C, the conductive electrodes are fo...

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Abstract

The invention discloses a power control diode for intelligent control of circuit output power, and the power control diode is composed of a resistor (2), a PTC (pitch trim compensator)(1); a PTC (3) and an electrode (4), due to a higher initial resistance value of the resistor (2), when the power is switched on, the heating speed is fast, and under combined effects of heat effect produced by heat coupling of the PTC (1) and PTC (2) and self heating of the PTC (1) and PTC (2), the PTC temperature quickly reaches and exceeds Curie temperature for stable reaching to a work area, by the use of R-T (resistance-temperature)characteristic of the PTC in a jump area, the circuit current is controlled so as to achieve the purpose of power control.

Description

Technical field: [0001] The present invention belongs to the technical field of electrical devices, and refers to a diode component capable of intelligently controlling output power (hereinafter referred to as a power control diode in the present invention), such as LED lighting driving power control and power supply overvoltage and overcurrent power control. Background technique [0002] Thermistor PTC (hereinafter referred to as PTC) is widely used in people's life and production. Among them, the jump region in the volt-ampere characteristic has constant power characteristics, which can well control the total power of the entire electrical equipment without voltage change with changes. However, due to the nonlinear resistance-temperature effect of the PTC itself, it is difficult to design and manufacture a PTC with suitable parameters, so that it can smoothly transition to the jump region in the volt-ampere characteristic. The reasons are as follows: 1. The resistance-tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/00
Inventor 王会锋张晓秋苏少平高晓红
Owner 王会锋
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