32results about How to "Change the output voltage" patented technology

The invention discloses an LED lamps energy conservation control circuit capable of timingly changing brightness; the circuit has simple structure, high efficiency, low power consumption, and capability of saving energy and prolonging service life of a lamp. The invention comprises a rectification filter circuit (1), a voltage regulator circuit (2), LED load (3), a constant current source device (4), and a timing circuit (8); through rectification and filtration by the rectification filter circuit (1), alternating current is changed into direct current and is then regulated through the voltage regulator circuit (2) to be constant direct current output, thus an output end (A) and an earth terminal (G) are formed; after connected in series, the LED load (3) and the constant current source device (4) are connected between the output end (A) and the earth terminal (G) to form a return circuit; the timing circuit (8) is connected with the voltage regulator circuit (2) for providing timing feedback signal to change output voltage of the voltage regulator circuit (2). The LED lamps energy conservation control circuit capable of timingly changing brightness can be widely applied to the LED lamp field.

The invention discloses a CAN flow equalizing method with a grouping function. The method comprises the steps of S1, starting to send data; S2, judging the group type; S21, when A groups of power module data are received, executing S211; S211, judging whether the data belongs to a mailbox 1 or not, and if yes, executing S212; if the data does not belong to the mailbox 1, returning the result; S212, judging whether a grouping command exists or not, if yes, executing S23, and if not, returning the result; S22, when B groups of power module data are received, executing S221; S221, judging whetherthe data belongs to a mailbox 2 or not, and if yes, executing S222; if not, returning the result; S222, judging whether a grouping instruction exists or not, if yes, executing S23, and if not, returning the result; S23, updating the group type according to the grouping command, and modifying the ID of an internal communication mailbox 0; S3, returning the result. By means of the CAN flow equalizing method with the grouping function, a power module is grouped, and then flow equalizing is achieved.

The invention relates to a position sensor for a non-contact clutch, which solves the problems that the poor contact existing in the prior position sensor of the non-contact clutch leads to poor operational reliability and so on, The position sensor for the non-contact clutch comprises a shell, a rotor, a circuit board and so on, wherein a magnetic steel ring is arranged in the cylindrical rotor,the inner wall of the magnetic steel ring is symmetrically provided with two permanent magnet blocks respectively, and a cavity is formed between the two permanent magnet blocks; and the middle part of the circuit board is connected with an A Hall chip and a B Hall chip through two conducting member bars respectively, and the A Hall chip and the B Hall chip are positioned in the cavity between the two permanent magnet blocks. The sensor solves the problem of contact wear and prolongs service life; the sensor has good linear output characteristic and ensures that an output signal is more accurate and stable; the adopted Hall chips have functions of programmable property and temperature compensation, can flexibly change parameters of output voltage according to the requirement of customers,and automatically compensate and calibrate the magnetic field drift when the magnetic field intensity of a magnet drifts with the change of the temperature.