论文部分内容阅读
本文以三星PL65数码相机的闪光灯电路为例,分析数码相机闪光灯电路的原理与检修。1.三星PL65数码相机闪光灯电路原理分析图1的电路采用了闪光芯片AT1454C模块,每边5脚双列布局。1脚是充电信号输入控制端;2脚是充电电压检测输入端;3脚是闪光触发方式信号输人控制端,由该脚输入的信号决定闪光灯是单次输出还是频闪输出,4脚是升压变压器次级电流输入端,5脚接地,6脚是
This article takes the flash circuit of Samsung PL65 digital camera as an example to analyze the principle and overhauling of digital camera flash circuit. 1. Samsung PL65 digital camera flash circuit schematic analysis of Figure 1 circuit uses a flash chip AT1454C module, 5-pin double-column layout on each side. 1 pin is the charging signal input control terminal; 2 feet is the charging voltage detection input; 3 feet is the flash trigger signal input control side, the signal input by the foot determines the flash is a single output or strobe output, 4 feet Step-up transformer secondary current input, 5 feet grounded, 6 feet is