Electronics Workbench Circuit File
Version: 5
Charset: ANSI
Description: 
"                                           多路報(bào)警器" 
"" 
"              當(dāng)今生活，日新月異。快節(jié)奏的生活使人們?cè)诰o張，繁忙的工作之余，還時(shí)常牽掛家里是否有人或被竊。為解決您的后顧之憂，我們特設(shè)計(jì)了一個(gè)多路報(bào)警器。它有四個(gè)接線端，可分接在東西南北方向的門窗，只要有小偷打開一門窗，則線路斷開而導(dǎo)通，就發(fā)出報(bào)警聲。下面是其線路要求，技術(shù)指標(biāo)簡(jiǎn)要原理。" 
"         技術(shù)指標(biāo)：直流電壓源     6v                              輸出功率     3w" 
"          要求：體積小，使用方便。" 
"         仿真方案：先按空格鍵，再分按1，2，3，4或同時(shí)其中幾個(gè)組合，就會(huì)發(fā)出警報(bào)聲。" 
"          1      控制電路" 
"          該電路由四個(gè)（BA158GP）型二極管，四個(gè)電阻等組成。" 
"          簡(jiǎn)要原理：四個(gè)開關(guān)在相當(dāng)于接在四個(gè)不同方向的接線柱,在正常情況下,讓其閉合,即短路門窗關(guān)好,一旦斷開,有一條線路就導(dǎo)通,就有一微小信號(hào),經(jīng)驅(qū)動(dòng)級(jí)放大輸入功放,使功放發(fā)出響聲." 
"          仿真方案:先讓k1~k4閉合,再按空格鍵,然后按1或2,3,4,就會(huì)發(fā)出報(bào)警聲." 
"          2     功率輸出電路.(已有)" 

EncryptionType: 2
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