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Fluorescent lamp control circuit

A technology for controlling circuits and fluorescent lamps, applied to light sources, electric light sources, electrical components, etc., can solve the inconvenience of fluorescent lamps and achieve the effect of increasing luminous flux and increasing filament current

Inactive Publication Date: 2009-09-30
MASS TECH (HK) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also brings inconvenience to people when using fluorescent lamps.

Method used

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  • Fluorescent lamp control circuit
  • Fluorescent lamp control circuit
  • Fluorescent lamp control circuit

Examples

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Embodiment Construction

[0013] like figure 1 As shown, the fluorescent lamp control circuit of the present invention includes a ballast control unit 1, an oscillator unit 2, a signal detection unit 3, a switch unit 4 and a frequency conversion unit 5, and the signal detection unit 3 receives the ballast control unit 1 After turning on the signal, the signal is output to the switch unit 4, the switch unit 4 outputs the signal to the frequency conversion unit 5, and the frequency conversion unit 5 outputs the signal to the oscillator unit 2 to change the oscillation frequency.

[0014] Preferably, as figure 2 As shown, the signal detection unit includes a diode D1, a resistor R1 and a capacitor Ctimer, the resistor R1 and the capacitor Ctimer are connected in parallel to the cathode of the diode D1, and the anode of the diode D1 is connected to the ballast control unit; The switch unit is an NMOS transistor, the gate of which is connected to the cathode of the diode D1, and the source is grounded; th...

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Abstract

The invention discloses a fluorescent lamp control circuit, which comprises a ballast control unit, an oscillator unit, a signal detection unit, a switch unit and a frequency conversion unit, wherein the signal detection unit outputs a signal to the switch unit after receiving a signal for turning on the lamp from the ballast control unit, the switch unit outputs a signal to the frequency conversion unit, and the frequency conversion unit outputs a signal to the oscillator unit and changes the oscillation frequency. The control circuit uses the action of triggering the switch unit by the signal detection unit after the signal detection unit receives the signal for turning on the lamp, and the action of the switch unit makes the frequency conversion unit work to change the oscillation frequency of the oscillator unit of the fluorescent lamp, increase the filament current of the fluorescent lamp and improve the light transmission rate of the fluorescent lamp, so that the fluorescent lamp can reach normal brightness quickly in a short time.

Description

technical field [0001] The invention relates to a control circuit of a fluorescent lamp, in particular to a control circuit which can increase the current of the fluorescent lamp within a specific time period so that the fluorescent lamp can quickly reach normal brightness in a relatively short period of time. Background technique [0002] Fluorescent lamps currently on the market use mercury to emit ultraviolet light. Normally, mercury exists in liquid form, but also in the form of amalgam (amalgam of small balls). Compared with liquid mercury, amalgam has great advantages, but amalgam needs to be excited by heat to emit ultraviolet light. Therefore, it takes a certain amount of time for the fluorescent lamp using amalgam to reach the rated output luminous flux. After the fluorescent lamp is lit, the heat near the amalgam determines the evaporation of the small spherical amalgam. People often feel that the fluorescent lamp is dark when it is first turned on, and it takes ...

Claims

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Application Information

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IPC IPC(8): H05B41/295
CPCH05B41/386
Inventor 胡安华
Owner MASS TECH (HK) LTD
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