A kind of LED constant current constant voltage electricity getting system
Technical field
The utility model relates to a kind of LED electricity getting system, belongs to LED power supply technique field.
Background technology
Existing LED way to take power is to come the power supply to LED by a constant-current supply is installed, and again by a constant voltage source is installed, realizes the control chip power supply, thereby has played the Based Intelligent Control of light fixture.The way to take power of Here it is existing intelligent light fixture.The way to take power of existing light fixture Based Intelligent Control often causes the restriction on the placement space and also exist deficiency on efficient and stability because of the size of light fixture, solves these weak points so need think a kind of new way to take power.
The utility model content
The purpose of this utility model is, a kind of LED constant current constant voltage electricity getting system is provided.Its volume is little, and is simple in structure, can also improve efficient and stability when saving cost.
The technical solution of the utility model: a kind of LED constant current constant voltage electricity getting system is characterized in that: comprise the LED constant-current supply that is connected on the AC power, the positive pole of LED constant-current supply output links to each other with negative pole with the positive pole of LED optical mode group respectively with negative pole; And the positive pole of LED constant-current supply output links to each other with the positive source of LED control circuit, and the ground terminal of LED constant-current supply holding wire links to each other with the power cathode of LED control circuit.
In the aforesaid LED constant current constant voltage electricity getting system, described LED constant-current supply is the LED constant-current supply of band simulation dimming interface (0-10V) or PWM interface (0-5V).Available model: EUC-075S210DT, EUC-085S200DT, EUC-100S175DT.
Compared with prior art, the utility model makes and can realize the function that constant current and constant voltage are powered simultaneously with a constant-current supply that realization LED control is only used a power supply with power supply by changing the mode of connection.The utility model is the positive pole of the output head anode of constant-current supply as the control circuit power supply, the negative pole of the ground wire in the constant-current supply holding wire as control circuit, so just finished in the conversion of constant-current supply to constant voltage source, do not influence simultaneously the normal power supply of LED, the galvanic way to take power of low pressure but is provided for control circuit.The utility model has saved a constant voltage source, and the inner space of having saved light fixture makes it to be subjected to hardly the restriction in light fixture space to save production cost again, only needs a power supply.When saving cost, also improved efficient and stability, higher, more stable than traditional circuit methods efficient, lower than the failure rate of traditional approach.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Being labeled as in the accompanying drawing: 1-LED constant-current supply, 2-LED optical mode group, 3-LED control circuit.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment 1.A kind of LED constant current constant voltage electricity getting system, structure comprise the LED constant-current supply 1 that is connected on the AC power Ac220 as shown in Figure 1, and the positive pole of LED constant-current supply 1 output links to each other with negative pole with the positive pole of LED optical mode group 2 respectively with negative pole; And the positive pole of LED constant-current supply 1 output links to each other with the positive source of LED control circuit 3, and the ground terminal GND of LED constant-current supply 1 holding wire (holding wire of 0-10V) links to each other with the power cathode of LED control circuit 3.Described LED constant-current supply 1 is the LED constant-current supply of band simulation dimming interface (0-10V) or PWM interface (0-5V).Available model: EUC-075S210DT, EUC-085S200DT, EUC-100S175DT.