Seven-way flashing light string circuit

It is a practical L-channel flashing light string controller, and its flashing mode can be programmed in one step. The core device of the circuit is the CS71D17 L-channel programmed flash integrated U-circuit
produced by Wuxi Aixinke Micro IU subsidiary (htipj'www.wxasic.com). It is packaged in IP -16 standard, making it The iu voltage range is 3~6V and the functions of each pin are shown in Table 83. CS71 017 circuit has 6 basic flash functions built-in, through different connection methods of 3 pattern control terminals (131-B3). nJ can be grouped to create a variety of loop patterns. Table 8.4 gives the control termination methods of 14 different patterns .     Picture towel. 220V alternating current is passed through C step-down, VD1, VD2 rectification, vs voltage stabilization and G filtering , and the output is about 6, _ DC power is pushed to the integrated block Sichuan Electric Power. The ②~⑤ and ⑦~⑨ pins of CS71017 directly trigger the bidirectional thyristors VTHl - VTH7 to drive the colored lights F, J~E7 to flash and light up . Since H1 and B2, namely the ⑩ and ⑩ pins, are connected to the high level V. ,. , and Ij3 is the ① pin floating in the air, so the flashing mode of the lanterns E and E7 is the automatic conversion mode of patterns 1 to 6 (see the 8th mode in Table 8 4). Readers can also change it according to Table 8 4 He flashes pattern. Increasing or decreasing the capacity of (1. in the circuit can change the flashing frequency of the circuit. Usually c. can be adjusted within the range of iOOf)-")iOOpF. In addition, the power consumption control terminals ⑩ pin Ⅵ and ⑥ pin v(. both Connecting high ILl to flat V... is a high power consumption output, and the output current is large to meet the requirements of driving the thyristor. If Vu is -1., Vt -1, it is a low power consumption connection, the output current is small, and it is mainly used for battery power supply. Adapt to the requirements for driving light-emitting tubes and flickering .     (1. It is required to use CBB-400V type polyethylene capacitors. VTHl - VTH7 should use small plastic-cut dual-J thyristors such as MAC94A4 type with smaller . E1_-F: 7 Commercially available colorful light strings can be used, and the light strings can be arranged in a certain order in the space to form various flashing patterns. There are no special requirements for other components.