VH5162 Holiday Lights ASIC
Source: InternetPublisher:已注销 Keywords: Application specific integrated circuits lanterns thyristors switches Updated: 2021/03/26
The holiday lantern controller circuit made with VH5162 integrated circuit is shown in Figure 2-95.
After the 220V AC power is bridge rectified by VD1~VD4, one channel is used as the working voltage of the lanterns HI~H4, and the other channel is stepped down by Rl and VD5 After voltage stabilization and
CI filtering, power is supplied to integrated block A. The four output terminals LI~L4 of the integrated block are added to the gates of the thyristors VS1-VS4 through the resistors R3~R6
to control their conduction angles to achieve the purpose of driving the flashing lights . SB is the working mode selection switch . Each
time the button is pressed, the working mode is changed.
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