A drive circuit for arrow-shaped traffic lights
A technology of traffic signal lights and drive circuits, which is applied to the layout of electric light circuits, electric light sources, lighting devices, etc., can solve the problems of 4 LEDs not lighting up, and achieve the effects of avoiding traffic jams, avoiding shocks, and prolonging service life
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[0019] Below in conjunction with accompanying drawing, structure and working process of the present invention will be further described.
[0020] Such as figure 1 As shown, a drive circuit for an arrow-shaped traffic signal lamp includes a power supply unit, a rectification unit, a filter unit, a voltage stabilization unit, and a display unit connected in sequence, the power supply unit includes a transformer T1, and the rectification unit includes diodes D1 and D2 , D3, D4 composed of a rectifier bridge, the filter unit includes a Π-shaped filter circuit, the Π-shaped filter circuit includes capacitors C1, C4, inductor L1, resistors R1, R5, and the voltage stabilizing circuit includes polar capacitors C2, A voltage stabilizing circuit composed of C3 and non-polar capacitor C5 connected in parallel, the display unit includes at least one light emitting unit, each light emitting unit includes first to ninth light emitting branches and a voltage stabilizing branch, the voltage s...
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