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低温镀铁工艺要求电源在起镀和过渡镀阶段,能输出正负半周电流均可以单独调节的交流电,即不对称交流电;在直流镀阶段,能输出电流可以调节的脉动直流电。下图是500安可控硅低温镀铁电源的电路图,现简介如下,供自制时参考。主要技术规格输入交流220伏变压器功率 11仟伏安直流输出 0～500安,0～14伏,能连续调节不对称交流输出 0～250安,可连续调节特点 1.电路简单,元件少,制作容易,成本低。 2.采用桥式可控硅半控主电路,变压器的功率利用和硅管的工件条件较好。 3.采用阻容触发电路,便于调试和排除故障。 4.采用闸刀切换和硅管强制风冷,工作可靠,易于维护。
Low-temperature iron plating process requires power in the plating and transitional plating phase, can output positive and negative half-cycle current can be adjusted separately AC, that is asymmetric AC; DC coating phase, the output current can be adjusted pulsating DC. The following figure is a 500 A control silicon low temperature iron-plated power supply circuit diagram is as follows, for self-reference. Main technical specifications Input AC 220V Transformer Power 11KVA DC output 0 ~ 500A, 0 ~ 14V, can be continuously adjusted Asymmetrical AC output 0 ~ 250A, continuous adjustment Features 1. Simple circuit, fewer components, production Easy, low cost. 2. Using bridge SCR semi-controlled main circuit, transformer power utilization and silicon tube workpiece conditions are better. 3. Using capacitance-resistor trigger circuit, easy to debug and troubleshooting. 4. The use of knife switch and silicon tube forced air cooling, reliable, easy to maintain.