Four-way flashing light string circuit (8)

It is a multi-style four-way flashing light string controller made of SH 803 special integrated circuit . SH
80:3 has eight programs and modes and multiple dimming speeds. You can select a certain program
pattern . Its eight program functions are
    (1) After turning on the power, the circuit works in this mode (any), and then cycles to mode (2) -
(s), automatically jumping in a cycle;
    (2) The lamp rolls in a wavy shape. There are two different speeds;
    (3) The III lights light up in sequence, S El, E2- E/, E0-F3, E4-E4, El- cycle, and change the
same speed, from single horse chasing to Wan Wu Kuang Teng,
    (4) Two adjacent lights, one of which gradually lights up and the other gradually dims, flashes at three speeds according to the Mann cycle
(5) halo), the four lights light up one by one, flash twice, and the III light reverses One by one, the lights flash twice 5
    (6) After all lights are turned on, the field lights
slowly turn off at the same time, and the forks simultaneously fade in and
out, and
cycle at three speeds;
    (7) The four spiders
flash , and each light turns on in sequence. Flashing
= Di, rolling back and forth;
    (s) full light (this method
can be used to check the quality of the lamp string beads
).
    SH-803 series model, delete CMOS circuit , adopt black paste soft package, have 10 external pins, use l Li
source address range is 3-5V, typical value is 4 SV.
    A scarf, AC decoupling VDl-VD4 rectification, R, voltage reduction, current limiting and vs voltage stabilization, the output is about l jV 卣
current IU for the integrated block lU, the resistor R provides AC synchronization signal for the integrated block, its output end after power on Il-
I. 4 (that is, pins ③~⑥) output trigger signals to directly control the conduction
angles of thyristors VTl--VT4 (Yizhi MCR100-S type), so that the colorful light strings E1-F-4 automatically cycle according to eight program patterns . If a person presses switch SB,
he or she can choose any of the changing patterns.