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能否告诉:您以前的制作?
现提供一套本人曾经制作过的,已经有四十多年电影音响电路.若按照原图制作,可以输出最大15W*2的输出功率.也可以适当调整电源电压,并将推挽输出功率管改换为:6P3;EL34;KT66等.即可以输出20~~30W的功率.
电源变压器比较难解决的.单声道需要350VA,双声道需要700VA,建议购买R--600型变压器一只.若采用EI型,则两个声道分开,用两只350VA的.可以减少单个体积,便于安装.
输出变压器,网络价格:175元/只(0.5矽钢片,0.35的矽钢片225元/只);请在保证使用质量前提下,自己先联系货源.若有困难,再联系我.可以帮助你委托本地厂家加工.价格可以优惠些.
图纸中第一管为6N1;中间倒相推动级为6N11;后级推挽为6P14或6P1;
我的信箱:tlk2002b@163.com.
<img src="attachments/dvbbs/2004-12/2004122114648867.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-12/2004122114648867.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
若制作30W推挽输出,则电源部分需要按照下图进行制作:
<img src="attachments/dvbbs/2004-12/2004122115193986.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-12/2004122115193986.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
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