| 词条 | Rubber diode |
| 释义 |
In electronics, a rubber diode or V{{sub|BE}} multiplier is a Bipolar junction transistor circuit that serves as a voltage reference. It consists of one transistor and two resistors, and the reference voltage across the circuit is determined by the selected resistor values and the base-to-emitter voltage (V{{sub|BE}}) of the transistor. The circuit behaves as a voltage divider, but with the voltage across the base-emitter resistor determined by the forward base-emitter junction voltage. It is commonly used in the biasing of push-pull output stages of amplifiers, where one benefit is thermal compensation: The temperature-dependent variations in the multiplier's V{{sub|BE}}, can be made to match variations occurring in the V{{sub|BE}} of the power transistors by mounting to the same heat sink.[1] In this context, it is sometimes called a bias servo.[2] References1. ^{{cite book |last1=Crecraft |first1=David |last2=Gergely |first2=Stephen |date=May 21, 2002 |title=Analog Electronics |url=https://books.google.com/books?id=lS7qN6iHyBYC&lpg=PA188&dq=vbe%20multiplier&pg=PA188#v=onepage&q=vbe%20multiplier&f=false |location= |publisher=Butterworth-Heinemann |page=188 |isbn=0080475833 |access-date=August 11, 2015 }} {{Electronics-stub}}2. ^{{cite web |url= http://sound.whsites.net/amp_design.htm |title= Amplifier Design Guidelines |last= Elliott |first= Rod |date= 27 Dec 2006 |website= Elliott Sound Products |access-date= Aug 11, 2015}} 1 : Semiconductors |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。