目前對(duì)于可調(diào)式直流電源的設(shè)計(jì)和應(yīng)用現(xiàn)在有很多微妙的,多種多樣的,有趣的問(wèn)題。探討這些問(wèn)題(特別是和中發(fā)電機(jī)組有關(guān)),重點(diǎn)是在電路的經(jīng)濟(jì)適用性上,而不是要達(dá)到最好的性能。當(dāng)然，對(duì)那些精聾@潭紉蠛芨叩某?。讨论的问题包括温墩J(rèn)凳?，短普~?，壤@?，瞬态响应变性遥笧a涂豴reregualtor型機(jī)組及和它的性能特點(diǎn)有關(guān)的的一些科目。
介紹
從商業(yè)的角度來(lái)看供電領(lǐng)域可以得到這樣一個(gè)事實(shí)，在相對(duì)較低的成本下就可以可以獲得標(biāo)準(zhǔn)類型的0.01%供電調(diào)節(jié)。大部分的供電用戶并不需要這么高的規(guī)格，但是供應(yīng)商不會(huì)為了減少客戶這么一點(diǎn)的費(fèi)用而把0.1%改成0.01%。并且電力供應(yīng)的性能還包括其他一些因素，比如說(shuō)線路和負(fù)載調(diào)解率。本文將討論關(guān)于溫度系數(shù)、短期漂移、熱漂移,和瞬態(tài)的一些內(nèi)容。
目前中等功率直流電源通常采用預(yù)穩(wěn)壓來(lái)提高功率/體積比和成本，但是只有某些電力供應(yīng)采用這樣的做法。這種技術(shù)的優(yōu)缺點(diǎn)還有待觀察。
溫度系數(shù)
十年以前，大多數(shù)的商業(yè)電力供應(yīng)為規(guī)定的0.25%到1%。這里將氣體二極管的溫度系數(shù)定位百分之0.01[1]。因此，人們往往會(huì)忽視TC（溫度系數(shù)）是比規(guī)定的要小的。現(xiàn)在參考的TC往往比規(guī)定的要大的多。為了費(fèi)用的減少，后者會(huì)有很大的提高，但是這并不是真正的TC。因此，如果成本要保持在一個(gè)低的水平，可以采用TC非常低的齊納二極管，安裝上差動(dòng)放大電路，還要仔細(xì)的分析低TC繞線電阻器。
如圖1所示，一個(gè)典型的放大器的第一階段，其中CR1是參考齊納二極管，R是輸出電位調(diào)節(jié)器。
Abstract-The design and application of highly regulated dc power supplies present many subtle, diverse, and interesting problems. This paper discusses some of these problems (especially inconnection with medium power units) but emphasis has been placed more on circuit economics rather than on ultimate performance.Sophisticated methods and problems encountered in connection with precision reference supplies are therefore excluded. The problems discussed include the subjects of temperature coefficient,short-term drift, thermal drift, transient response degeneration caused by remote sensing, and switching preregualtor-type units and some of their performance characteristics.
INTRODUCTION
ANY SURVEY of the commercial de power supply field will uncover the fact that 0.01 percent regulated power supplies are standard types and can be obtained at relatively low costs. While most users of these power supplies do not require such high regulation, they never-theless get this at little extra cost for the simple reason that it costs the manufacturer very little to give him 0.01 percent instead of 0.1 percent. The performance of a power supply, however, includes other factors besides line and load regulation. This paper will discuss a few of these-namely, temperature coefficient, short-term drift, thermal drift, and transient response. Present medium power dc supplies commonly employ preregulation as a means of improving power/v