随着电子技术的不断进步,笨重低效的电子管收音机逐渐被淘汰了。这些旧收音机大多被弃置一旁或拆掉。虽然机内元件大多已老化,但是一些元件还是可以使用,其中有的性能还不错。本文就其中一些主要元件的改制、使用问题向读者作一介绍,供同好参考。一、电源变压器的利用:旧电子管收音机的电源变压器大多数是好的,功率多在40～60W之间,很适合改制12英寸黑白电视或小功率音响的电源变压器。旧变压器的初级绕组有两个 With the continuous improvement of electronic technology, cumbersome and inefficient tube radios were gradually eliminated. Most of these old radios were abandoned or removed. Although most of the components in the machine have been aged, some of the components can still be used, and some of them are still performing well. This article on the restructuring of some of the major components, the use of the problem to readers to make an introduction for a good reference. First, the use of power transformers: Most of the old tube radio power transformers are good, more power between 40 ~ 60W, it is suitable for restructuring 12-inch black and white TV or low-power audio power transformer. The old transformer has two primary windings