Research on high-power multi-function long-range police lights

 The requirements for long-row warning lights are rugged, small, and highly reliable. Therefore, this dissertation first analyzes and summarizes the existing long-range police lights, and proposes a new type of high-power multi-function long-range warning lights for its shortcomings. Program. This long-row type of warning light has the characteristics of large output power, complete functions, long life and intelligent type. The key part of the strobe light circuit is the flyback DC-DC converter. Although such a converter has the advantages of simple structure, etc., it has disadvantages such as a large peak current. If the four strobe modules are operated in parallel at the same time, the total peak current will be very large, causing a great impact on the vehicle battery. Therefore, the staggered parallel technology is adopted in the circuit design, and the peak current is staggered, which can greatly reduce the impact on the vehicle battery and prolong its service life. At the same time, the existing flyback DC-DC converter is improved, and a new type of flyback DC-DC converter based on autotransformer is proposed, which effectively reduces the traditional flyback DC. - Large leakage voltage present in the DC converter. In the circuit of the power amplifier, a switching power amplifier based on TL494 is proposed. Since the switching power amplifier uses a unique complementary driving method, the operating efficiency of the power amplifier can be greatly improved.