Simulation filament impedance circuit, LED lamp tube, and LED illuminating system
A technology of LED lamp tube and LED lighting, which is applied in the field of lighting and can solve problems affecting the conversion efficiency of lamp tubes
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Embodiment 1
[0045] Figure 4 A schematic structural diagram of a circuit for simulating filament impedance according to an embodiment of the present invention is shown. see Figure 4 , the simulated filament impedance circuit includes a first resistor 41 , a second resistor 42 and a first capacitor 43 , where the first resistor 41 and the first capacitor 43 are connected in parallel and then connected in series with the second resistor 42 .
[0046] Figure 4 The expression of the equivalent impedance value Z of the simulated filament impedance circuit shown is:
[0047] Z = R 1 × 1 j w C R 1 + 1 j w C + ...
Embodiment 2
[0059] Figure 5 A schematic structural diagram of a circuit for simulating filament impedance according to an embodiment of the present invention is shown. see Figure 5 , the simulated filament impedance circuit includes a first resistor 51 , a second resistor 52 and a first capacitor 53 , wherein the first resistor 51 and the first capacitor 53 are connected in series and then connected in parallel with the second resistor 52 .
[0060] Figure 5 The expression of the equivalent impedance value Z of the simulated filament impedance circuit shown is:
[0061] Z = ( R 1 + 1 j w C ) × R 2 R 1 + 1 j ...
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Abstract
Description
Claims
Application Information
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