CN2248439Y - Safety energy-saving electronic ballast - Google Patents

Abstract

The utility model relates to a safety energy-saving electronic ballast which comprises a fluorescent lamp, a rectification filter circuit, a protection circuit, a delay start circuit and a high frequency oscillation circuit. The utility model has the advantages of low power consumption, high power factor, no frequent flicker, no noise, high brightness, long service life of the fluorescent lamp, etc. The utility model can be used for once glow starting under low voltage, and compared with an induction type ballast, about 30% of power can be saved.

Description

The energy-saving safe electric ballast

The utility model belongs to ballast, particularly a kind of energy-saving safe electric ballast.

Existing commercially available inductance type ballast, the low pressure starting difficulty." light despot board " electric ballast that Guiping, Guangxi Hua Bao electrical apparatus factory produces have low pressure (120 volts) starting soon, but brightness is not enough, and stroboscopic phenomenon is arranged.

The purpose of this utility model is to provide a kind of stable performance, no stroboscopic, and low-voltage starter is fast, improves brightness, the Remarkable Energy Saving electric ballast.

Technical solution scheme of the present utility model is such, by current rectifying and wave filtering circuit, and protective circuit, delayed startup circuit, high-frequency oscillating circuits, fluorescent lamp is formed.Wherein the high frequency transformer of high-frequency oscillating circuits adopts three groups of coils of same magnet ring coiling, has two groups of coil turns to equate.

The utlity model has oneself power consumption low (1.5W), power factor height (more than the 0.95W), the disposable starter of energy when low pressure (70 volts), no stroboscopic, noiselessness, the brightness height, advantages such as fluorescent lifetime length economize on electricity about 30% than inductance type ballast.

Below in conjunction with drawings and Examples to the utility model further instruction.

Accompanying drawing is the integrally-built electrical schematic diagram of the utility model.

In the accompanying drawing, whole diode D1-D4, filter capacitor C1, C2, triode T1, T2, high-frequency transformer coils n ₁, n ₂, n ₃, coil L, capacitor C 3, C4, C7, C8, delay capacitor C5, C6, resistance R 1-R8, diode D5, D5, fluorescent lamp DR.

In electrical schematic diagram, commutation diode D1～D4, filter capacitor C1, C2 connect into bridge rectifier filter circuit, and triode T1, the T2 of high-frequency oscillating circuits are serially connected in the circuit, high-frequency transformer coils n₁With n₃The identical connection of phase place, n₃With n₂Single spin-echo connects, n₁、n ₂Equal turn numbers, the resistance R 1 of delayed startup circuit, R7, coil n1, capacitor C 5, C7 and R2, R8, n₂, C6 is connected in series in the circuit, the capacitor C 3 of holding circuit, diode D5, R6 connect b, the e utmost point of T1, C4, D6, R6 connect b, the e utmost point of T2, output n₃2., 4. pin serial connection connect fluorescent lamp DR pin behind the connecting coil L 1., Capacitor C 8,3. pin connects the C1 negative pole.

Operation principle: 220 volts of alternating voltages are through the D1-D4 rectification, by obtaining about 300 volts of DC voltages after capacitor C 1, the C2 filtering, through R1, R7, n₁, C5, C7 be as delayed startup, at this moment T1 conducting, its output is through n₃, L adds to fluorescent lamp DR, because coil n₃And n₂Single spin-echo, n after the T1 conducting₂Inverse electromotive force force T1 cut-off because n₃And n₁Phase place is identical, n when T1 ends₁Produce the base stage that a forward electromotive force is passed to T2, T2 becomes conducting by cut-off, and at this moment the T2 emitter stage obtains the current potential of paraphase, through n₃, L is added to fluorescent lamp, after the T2 conducting because n₃、n ₁Phase place is identical, and this paraphase output potential is through n₃And n₁Coupling is added to the T2 base stage forces its cut-off, at this moment n₂Another forward Electromotive force transfers to the T1 base stage, and the T2 conducting is worked so again and again.

The utility model most preferred embodiment is such, with reference to accompanying drawing, and coil L coiling 180-230 circle, best 210 circles, high frequency transformer is with three groups of coils of a magnet ring coiling, coil n ₁, n ₂Be the 2-6 circle, best 4 circles, n ₃Be the 4-8 circle, best 6 circles, coil n ₁, n ₃The identical connection of phase place, n ₂, n ₃Phase place connects on the contrary.Element in the accompanying drawing is welded on the circuit board, and is fixed in the box body, connect the 3. pin of fluorescent lamp DR from capacitor C 1 negative wire, coil L lead-in wire connects the 1. pin of fluorescent lamp DR, and 2. capacitor C 8 lead-in wires connect, 4. pin.

Claims (1)

1. A kind of energy-saving safe electric ballast; comprise by fluorescent lamp, current rectifying and wave filtering circuit, protective circuit, delayed startup circuit, high-frequency oscillating circuits; it is characterized in that rectifier diode D1～D4; filter capacitor C1, C2 connect into bridge rectifier filter circuit; triode T1, the T2 of high-frequency oscillating circuits are serially connected in the circuit, high-frequency transformer coils n ₁With n ₃The identical connection of phase place, n ₃With n ₂Phase place connects on the contrary, n ₁, n ₂Equal turn numbers, the resistance R 1 of delayed startup circuit, R7, coil n ₁, capacitor C 5, C7 and R2, R8, n ₂, C6 is connected in series in the circuit, the capacitor C 3 of protective circuit, diode D5, R6 connect b, the e utmost point of T1, C4, D6, R6 connect b, the e utmost point of T2, and be defeated by end n ₃2., 4. pin serial connection capacitor C 8 connect fluorescent lamp DR pin behind the connecting coil L 1.,, 3. pin connects the C1 negative pole.

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