\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066<\/em><\/strong><\/h4>\n\n\n\n\u6b21\u306e\u7c21\u5358\u306a\u56de\u8def\u56f3\u3067\u8a73\u3057\u304f\u8aac\u660e\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\u3053\u3053\u3067\u306f\u3001\u30aa\u30da\u30a2\u30f3\u30d7\u6bb5\u306bLM3900\u3092\u4f7f\u7528\u3057\u3001\u5185\u90e8\u30a2\u30f3\u30d7\uff08A1\u301cA4\uff09\u306f\u3059\u3079\u3066\u30aa\u30fc\u30c7\u30a3\u30aa\u5165\u529b\u4fe1\u53f7\u3092\u5897\u5e45\u3057\u3066\u52d5\u4f5c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u305d\u3057\u3066\u3001VR1\uff5eVR4\uff08\u53ef\u5909\u62b5\u6297\u5668\uff09\u30674\u30c1\u30e3\u30f3\u30cd\u30eb\u306e\u30df\u30ad\u30b5\u30fc\u30bd\u30fc\u30b9\u304b\u3089\u306e\u97f3\u58f0\u5165\u529b\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002 \u305d\u306e\u305f\u3081\u3001\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u3088\u308a\u3001\u5404\u30aa\u30fc\u30c7\u30a3\u30aa\u30c1\u30e3\u30f3\u30cd\u30eb\u306e\u8abf\u6574\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u6b21\u306b\u3001\u30a2\u30f3\u30d7\u306e\u53cd\u8ee2\u5165\u529b\u304c\u97f3\u58f0\u4fe1\u53f7\u3092\u53d7\u3051\u53d6\u308a\u3001\u975e\u53cd\u8ee2\u7aef\u5b50\u3092\u63a5\u5730\u3057\u307e\u3059\u3002 \u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u8a2d\u5b9a\u306b1M\u306e\u62b5\u6297\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u6700\u5f8c\u306b\u3001\u5916\u90e8\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u7528\u306b\u5408\u6210\u3055\u308c\u767a\u5c04\u3055\u308c\u308b\u51fa\u529b\u4fe1\u53f7\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n\n\n\n
IC LM3900\u306e\u8aac\u660e<\/em><\/strong><\/p>\n\n\n\nLM3900\u306eIC\u5185\u90e8\u56de\u8def\u306f\u30014\u3064\u306e\u30aa\u30da\u30a2\u30f3\u30d7\u306e\u305f\u3081\u306b14\u30d4\u30f3\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002 \u901a\u5e38\uff0c\u5404\u30a2\u30f3\u30d7\u306f\u975e\u53cd\u8ee2\u7aef\u5b50\uff0c\u53cd\u8ee2\u7aef\u5b50\uff0c\u51fa\u529b\u7aef\u5b50\uff0c\u30b0\u30e9\u30f3\u30c9\u7aef\u5b50\uff08VCC\uff09\uff0c\u96fb\u6e90\u7aef\u5b50\uff08GND\uff09\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002 LM3900\u306e\u30d4\u30f3\u914d\u7f6e\u3082\u540c\u69d8\u3067\u3059\u3002<\/p>\n\n\n\n
4\u3064\u306e\u5185\u8535\u30a2\u30f3\u30d7\u304c\u72ec\u7acb\u3057\u3066\u52d5\u4f5c\u3057\u3001\u9ad8\u30b2\u30a4\u30f3\u306e\u5468\u6ce2\u6570\u88dc\u511f\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u307e\u305f\u3001\u96fb\u6e90\u306f1\u3064\u3067\u3088\u304f\u3001\u5225\u96fb\u6e90\u3067\u52d5\u4f5c\u3055\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002 \u6700\u3082\u91cd\u8981\u306a\u3053\u3068\u306f\u3001\u975e\u5e38\u306b\u5e83\u3044\u5e2f\u57df\u5e45\u3068\u826f\u597d\u306a\u51fa\u529b\u96fb\u5727\u632f\u5e45\u3092\u6301\u3064\u3053\u3068\u3067\u3059\u3002 <\/p>\n\n\n\n
\u90e8\u54c1\u30ea\u30b9\u30c8<\/em><\/strong><\/h4>\n\n\n\n\u305d\u306e\u5185\u5bb9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n
LM3900 IC\u306eA1-A4\u3002<\/p>\n\n\n\n
C1-C5 – 0.1\u30d5\u30a3\u30eb\u30bf\u30fc\u3002<\/p>\n\n\n\n
VR1-VR4 – 1 k\u03a9\u3002<\/p>\n\n\n\n
R5, r8\uff5er12 – 330\u03a9\u3002<\/p>\n\n\n\n
\u30aa\u30fc\u30c7\u30a3\u30aa\u56de\u8def\u30df\u30ad\u30b5\u30fc-R1 R2 R3\u3001R6 – 1M\u03a9\u3067\u3059\u3002<\/p>\n\n\n\n
R4, r7 – 470\u03a9<\/p>\n\n\n\n
\u30b7\u30f3\u30d7\u30eb\u306aFET\u30aa\u30fc\u30c7\u30a3\u30aa\u30df\u30ad\u30b7\u30f3\u30b0\u56de\u8def<\/strong><\/h3>\n\n\n\n2\u3064\u76ee\u306e\u30aa\u30fc\u30c7\u30a3\u30aa\u30df\u30ad\u30b5\u30fc\u56de\u8def\u3067\u306f\u3001\u96fb\u754c\u52b9\u679c\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u306e\u756a\u53f72N3819\u3092\u4e3b\u56de\u8def\u3068\u3057\u3066\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002 \u4e00\u822c\u7684\u306b\u9ad8\u30b2\u30a4\u30f3\u3001\u9ad8\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u5165\u529b\u3067\u3042\u308b\u305f\u3081\u3001\u30ce\u30a4\u30ba\u306e\u767a\u751f\u304c\u5c11\u306a\u3044\u3002 \u307e\u305f\u3001\u3053\u308c\u3089\u306e\u7279\u6027\u306b\u3088\u308a\u3001\u4e00\u822c\u7684\u306a\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u3088\u308a\u3082\u52b9\u7387\u304c\u9ad8\u3044\u3002 \u307e\u305f\uff0cR1\uff0cC1\uff0cVR1 \u3092\u5fc5\u8981\u6570\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306b\u3088\u308a\uff0c\u30c1\u30e3\u30f3\u30cd\u30eb\u6570\u3092\u5897\u3084\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u305d\u3057\u3066\u30019V\u306a\u3069\u306e\u5c0f\u96fb\u6d41\u3067\u52d5\u4f5c\u3055\u305b\u308b\u3002<\/p>\n\n\n\n