4results about How to "Simple circuit" patented technology

The utility model discloses a kind of LED multicolor display control circuit, including LED1 chip, power VCC1, power VCC2, triode Q1, triode Q2 and triode Q3, power VCC1 is connected with the anode of the first light-emitting diode of triode Q1's collector, triode Q2's base and LED1 chip respectively, power VCC2 is connected with the base of triode Q1, triode Q2's collector and triode Q3 respectively;The anode of the second light-emitting diode of triode Q1's emitter is connected with LED1 chip, the cathode of second light-emitting diode is grounded, the anode of the third light-emitting diode of triode Q2's emitter is connected with LED1 chip, the cathode of third light-emitting diode is grounded, the cathode of the first light-emitting diode of triode Q3's collector is connected with LED1 chip, the emitter of triode Q3 is grounded;The utility model has the advantages of reducing cost, reducing device, simplifying circuit and improving stability.

Provided is an electrical discharge detection system comprising a master breaker 10, a plurality of branch breakers 20, a plurality of electrical discharge detection units 30, and at least one current-limiting resistor 33, wherein: each of the branch breakers 20 is configured so as to block a circuit on the basis of the difference in current value between the current I1 flowing in a first electrode and the current I2 flowing in a second electrode; each of the electrical discharge detection units 30 is provided with an electrical discharge detection part 31 and a switch 32; the electrical discharge detection parts 31 are configured so as to detect noise superposed on a voltage or current; the switches 32 are electrically connected to the first electrodes of the branch breakers 20; the secondary sides of the switches 32 in each of the electrical discharge detection units 30 are electrically connected to shared wiring 83, 81; the wiring 81 is electrically connected to an electrode, among a plurality of electrodes in the master breaker 10, that is different from the electrode to which the first electrodes of the branch breakers 20 are electrically connected; and the current-limiting resistor 33 channels a current IE, which is part of the current I1, to the wiring 83, 81 when the switches 32 are closed.

The lens comprises a lens body, the peripheral wall of the lens body is a total reflection surface, a groove for containing a light source is formed in the bottom wall of the lens body, the peripheral wall of the groove forms a first incidence surface, the top wall of the groove is concaved upwards to form a second incidence surface, a pit is formed in the middle of the top wall of the groove, and the top wall of the pit forms a third incidence surface. The top wall of the lens body forms a first emergent face, a first emergent portion is arranged in the middle of the first emergent face, the top wall of the first emergent portion is concave inwards to form a second emergent face, a second emergent portion is arranged in the middle of the second emergent face, the top wall of the second emergent portion is concave inwards to form a third emergent face, the third emergent face is an arc face formed by rotation of a convex arc, and the second incident face is arranged below the second emergent face. According to the scheme, the main light spots and the auxiliary light spots with clear transition boundaries are formed through the single lens, the light and shade alternating illumination effect is achieved, the main light irradiates the main light spots of the main exhibits, the auxiliary light spots irradiate the accompanying articles on the peripheries of the main exhibits, and the spatial layering sense is improved.

This utility model discloses a simulated flame heater, comprising a shell with an air outlet, a movable base assembly at the bottom, a simulated flame assembly at the front, a combustion chamber inside the shell, a burner head at the bottom of the combustion chamber, an air outlet duct communicating with the air outlet at the top of the combustion chamber, a fan on one side of the air outlet duct, and an air outlet of the fan communicating with the air outlet duct. A thermoelectric generator is also installed inside the shell. The electrical potential generated by the thermoelectric generator can power the simulated flame assembly and the fan, utilizing waste heat from the burner to generate electricity. It is self-generating with high efficiency, eliminating the need for batteries to power the fan, saving energy, being convenient to use, energy-saving and environmentally friendly, and having a simple structure. The self-generating structure also simplifies the circuitry and extends the heater's lifespan.