IBS PCI SC/I-T IBS PCI SC/I-T
IBS PCI SC/I-T IBS PCI SC/I-T
開關(guān)電源工作原理
開關(guān)電源電路圖如圖2所示。
1 交流電源輸入電路
220V或60V交流電通過保險絲F和熱敏電阻RT加到由L1、L2、L3、C1-C5組成的電源濾波器，可有效地把市電網(wǎng)中的高頻成份濾除掉，防止外來高頻干擾波進(jìn)入開關(guān)電源。同時也抑制開關(guān)電源產(chǎn)生的高頻波，以防止串入市電網(wǎng)。R1為避雷器，當(dāng)遭雷擊時將被擊穿短路、保險絲將熔斷，保護(hù)開關(guān)電源各器件不被擊損。RT熱敏電阻的特性是冷電阻小、熱電阻大，當(dāng)由某種原因輸入電流增大時，熱敏電阻發(fā)熱阻值變大，阻止大電流進(jìn)入開關(guān)電源電路中。
“*夸咱做的產(chǎn)品！"
泰尼菜譜
★主食：AB，施耐德和GE 發(fā)那科
★四菜一湯：AB 1785、1756、1747、1784，施耐德140系列，發(fā)那科A06B系列，西門子6ES，505系列熱賣！
★餐后水果：泰尼現(xiàn)貨
：張亮
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