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《关于显示仪表用稳压电源的再探讨》一文(见本刊1980年第3期)对一级桥式稳压电源与普通单级稳压线路作了比对和分析。但文中的一些分析似乎有些简单和含混,结论有些欠妥。现提出一些个人看法,与同志们讨论和商榷。 1.关于补偿条件原文表1中,列举了桥式稳压电源电压调整率随R_3取值的减小而增高的试验数据。作者在分析结果时认为,这一“原因是当桥路平衡时R_3=(r_d)/(R_1)R_2这一条件,在有负载电流I_L这一具体情况下,需要作一定的修改”。这种提法是有些欠妥的。因为公式
“On the display meter with a power supply of the re-discussion,” a article (see the issue of 1980 No. 3) on a bridge power supply and the ordinary single-stage power line comparison and analysis. However, some of the analyzes in this article seem somewhat simplistic and vague, with some conclusions as to some extent. Now come forward with some personal opinions, discuss and discuss with my comrades. 1. With respect to the compensation conditions in Table 1, the test data of the bridge regulated power supply voltage regulation rate increasing with decreasing R_3 value are listed. When analyzing the results, the author thinks that this reason is due to the condition of R_3 = (r_d) / (R_1) R_2 when the bridge is balanced, and needs to be modified in the specific case of load current I_L. . This formulation is a bit flawed. Because of the formula