CN205689473U - AC fan Novel electrodeless alignment circuit - Google Patents

Abstract

The utility model discloses a novel stepless speed regulation circuit for an AC fan, which includes a speed regulation motor and an AC power supply, and is also provided with a stepless speed regulation control circuit. The stepless speed regulation control circuit includes a charging capacitor, a bidirectional trigger diode, a thyristor, The first resistor, potentiometer adjustable resistor, indicating LED light and control switch, the positive pole of the thyristor is connected to the speed regulating motor, the negative pole of the thyristor is connected to the neutral line of the AC power supply, and the control switch and potentiometer are adjustable Resistors, indicating LED lights, first resistors and charging capacitors are connected in series between the live wire and neutral wire of the AC power supply in sequence, one end of the bidirectional trigger diode is connected to the connection point between the charging capacitor and the first resistor, and the other end is connected to the thyristor control pole. The circuit structure of the utility model is simple, and its cost is low, which can effectively solve the technical deficiencies in the traditional technology, such as the difficulty in controlling the wind speed of gear speed regulation and the high cost of chip speed regulation. It has good stability in use, strong applicability and practicality. Good sex.

Description

A new stepless speed regulation circuit for AC fans

technical field

The utility model relates to the technical field of AC fan speed regulation, in particular to a novel stepless speed regulation circuit for an AC fan.

Background technique

With the rapid development of my country's power grid technology, household appliances are also developing rapidly. Fans are commonly used household appliances. Realize the speed regulation of AC fans, but the wind speed is easy to be limited by gear speed regulation, and the price of stepless speed regulation using chips is relatively expensive, and some anti-interference circuits need to be added around the chip to work stably, so the applicability and practicality are somewhat limited.

Utility model content

The main purpose of the utility model is to provide a new stepless speed regulation circuit for AC fans, aiming to solve the technical deficiencies in the traditional technology that the gear speed regulation wind speed is not easy to control and the cost of chip speed regulation is too high.

The utility model proposes a new stepless speed regulation circuit for an AC fan, including a speed regulation motor and an AC power supply. The speed regulation motor is connected between the live line and the neutral line of the AC power supply, and a stepless speed regulation control circuit is also provided. The stepless speed regulation control circuit includes a charging capacitor, a bidirectional trigger diode, a thyristor, a first resistor, a potentiometer adjustable resistor, an indicator LED light and a control switch. The negative pole of the controlled silicon is connected to the neutral line of the AC power supply, and the other end of the control switch is connected to the live line of the AC power supply after the control switch, the potentiometer adjustable resistor, the indicator LED light, the first resistor and the charging capacitor are connected in series in sequence. The other end of the charging capacitor is connected to the neutral line of the AC power supply, one end of the bidirectional trigger diode is connected to the connection point between the charging capacitor and the first resistor, and the other end is connected to the control electrode of the thyristor.

A one-way diode and a second resistor are also provided, the second resistor is connected in parallel with the indicating LED light, and the one-way diode is connected in parallel with the indicating LED light.

The model of the charging capacitor is 104 and the current is 2A.

The resistance value of the first resistor is 5.1KΩ.

The circuit structure of the utility model is simple, it can effectively realize the stepless speed regulation of the AC fan, and the cost is low, and it can effectively solve the problem that the gear speed regulation wind speed is not easy to control and the chip speed regulation cost is too high in the traditional technology Insufficient, the use stability is good, the applicability is strong and the practicability is good.

Description of drawings

Fig. 1 is the schematic diagram of the embodiment of the utility model.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1, an embodiment of the present utility model is proposed, a novel stepless speed regulation circuit for an AC fan, including a speed regulation motor 1 and an AC power supply 2, and the speed regulation motor 1 is connected to the live line L of the AC power supply 2 and Between the zero line N, there is also a stepless speed regulation control circuit 3, the stepless speed regulation control circuit 3 includes a charging capacitor C1, a bidirectional trigger diode D1, a thyristor T1, a first resistor R1, and a potentiometer adjustable resistor R , indicating LED light and control switch SW, the positive pole of the thyristor T1 is connected to the speed regulating motor 1, the negative pole of the thyristor T1 is connected to the neutral line N of the AC power supply 2, the control switch SW, the potentiometer After the adjustable resistor R, the indicator LED light, the first resistor R1 and the charging capacitor C1 are connected in series in sequence, the other end of the control switch SW is connected to the live line L of the AC power source 2 and the other end of the charging capacitor C1 is connected to the neutral line of the AC power source 2 On N, one end of the bidirectional trigger diode D1 is connected to the connection point between the charging capacitor C1 and the first resistor R1, and the other end is connected to the control electrode of the thyristor T1.

A one-way diode D2 and a second resistor R2 are also provided, the second resistor is connected in parallel with the indicating LED light, and the one-way diode is connected in parallel with the indicating LED light.

The model of the charging capacitor is 104 and the current is 2A.

The resistance value of the first resistor is 5.1KΩ.

Its working principle is briefly described as follows: the AC power supply adjusts the resistance of the potentiometer through the control switch SW, lights up the LED indicator D3, and charges 104 of C1 through the small current of R1 (the charging sequence determines the speed of the fan speed), When the voltage charged by C1 reaches the turn-on voltage of the G pole of the BT134 thyristor, the T1 and T2 conduction fans of the thyristor will work.

The circuit structure of the utility model is simple, it can effectively realize the stepless speed regulation of the AC fan, and the cost is low, and it can effectively solve the problem that the gear speed regulation wind speed is not easy to control and the chip speed regulation cost is too high in the traditional technology Insufficient, the use stability is good, the applicability is strong and the practicability is good.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (4)

1. an AC fan Novel electrodeless alignment circuit, including buncher and AC power supplies, described buncher is connected to AC Between live wire and the zero line of power supply, it is characterised in that: it is additionally provided with stepless time adjustment control circuit, described stepless time adjustment control circuit bag Include charging capacitor, bidirectional trigger diode, controllable silicon, the first resistance, potentiometer adjustable resistance, indication LED lamp and control switch, Described silicon controlled positive pole is connected with buncher, silicon controlled negative pole is connected with the zero line of AC power supplies, and described control is opened Pass, potentiometer adjustable resistance, indication LED lamp, the first resistance and charging capacitor control the other end of switch and connect after being sequentially connected in series On the live wire of AC power supplies and the other end of charging capacitor is connected on the zero line of AC power supplies, the one of described bidirectional trigger diode End is connected on the junction point of charging capacitor and the first resistance, the other end is connected to silicon controlled and controls extremely to go up.

AC fan Novel electrodeless alignment circuit the most according to claim 1, it is characterised in that: it is additionally provided with unilateral diode With the second resistance, described second resistance be in parallel with indication LED lamp and described unilateral diode and described indication LED lamp the most also Connection.

AC fan Novel electrodeless alignment circuit the most according to claim 2, it is characterised in that: described charging capacitor Model is 104 models and electric current is 2A.

AC fan Novel electrodeless alignment circuit the most according to claim 3, it is characterised in that: the resistance of described first resistance Value is 5.1K Ω.