Amplitude modulation type energy accumulation frequency conversion circuit

Abstract

The invention relates to an amplitude modulation type energy storage and frequency conversion circuit, comprising a voltage source, a periodic circuit, a fluorescent lamp circuit and a stabilizing circuit; wherein, the input terminal of the voltage source is connected with a dimmer, the output terminal thereof is connected with a bridge rectifier; the periodic circuit is provided with two transistors Q1 and Q2 and a group of self-induction coils connected in series; the fluorescent lamp circuit is provided with a protection circuit and a fluorescent tube; the stabilizing circuit consists of two capacitors C1 and C2 that are connected in series and between which a diode D1 is arranged; furthermore, the capacitors C1 and C2 provide a compensation voltage for the load after being charged. By the structure, the dimmer can be directly arranged on any terminal of the input voltage source, thus reducing the wiring difficulty and material cost; besides, the dimmer generates no flickers while adjusting the brightness of the fluorescent lamp.

Description

technical field [0001] The invention relates to an amplitude modulation energy storage and frequency conversion circuit, especially a circuit that uses the principle of capacitor charging and discharging to reduce the instantaneous voltage of the load provided by the voltage source, so as to eliminate the voltage distortion generated during oscillation. When the fluorescent tube is used for dimming In order to achieve the effect of not flickering when the device is dimming. Background technique [0002] In recent years, people's requirements for the quality of life are getting higher and higher, and the brightness of space lighting has the variability of strength and weakness, so as to meet the needs of users to achieve the most comfortable sensory enjoyment, and the common dimmable electronic stability device, as shown in Figure 6, which includes: a fluorescent lamp (60), a ballast (70) and a dimmer (80) are connected, and the ballast (70) is connected to a power terminal (...

AI Technical Summary

Problems solved by technology

[0002] In recent years, people's requirements for the quality of life are getting higher and higher, and the brightness of space lighting has the variability of strength and weakness, so as to meet the needs of users to achieve the most comfortable sensory enjoyment, and the common dimmable electronic stability device, as shown in Figure 6, which includes: a fluorescent lamp (60), a ballast (70) and a dimmer (80) are connected, and the ballast (70) is connected to a power terminal (71) , and the other end can be connected in parallel with a plurality of fluorescent lamps (60), and the ballast (70) is provided with a control window (72) between the oscillating circuit and the arc circuit, and a dimming lamp is connected to the outside with a wire (73). device (80), the dimmer (80) is used to change the output frequency generated by the oscillation circuit in the ballast (70), that is, the brightness of the fluorescent lamp (60) can be adjusted, however, the dimmer (80) is The wire (73) must be connected to the control window (72) of the ballast (70), and the dimmer (80) must be installed at a place that is convenient for the user to control, that is, additional wiring must be carried out, which not only causes inconvenience in construction, but also Increase wiring time and wire cost

[0003] In order to reduce the time for matching and the cost of wires, the dimmer (80) can be directly connected in series with the power supply terminal (71), and the light can be adjusted by adjusting the voltage, and the adjustment process can be performed by the 7th, As shown in Figure 8, the voltage CH1 is the output voltage measured inside the ballast (70), and the voltage CH2 is the input voltage at the connection between the ballast (70) and the power supply terminal (71). When not adjusted ( As shown in Figure 7), its voltage CH1 is in a high voltage state, and the fluorescent lamp (60) is the brightest brightness; when adjusting the dimmer (80) the brightness of the fluorescent lamp (70) is reduced (as shown in Figure 8) , the voltage CH1 is adjusted downwards, and the voltage CH2 is disturbed by the ballast (70) to produce floating distortion, which causes intermittent changes in the input current, which leads to the fluorescent lamp (60) in the brightness adjustment The system will flicker, causing inconvenience in use

Images