アンプの出力インピーダンスをLTspiceで計算してみる

<style>/*
<link href='https://www.blogger.com/dyn-css/authorization.css?targetBlogID=2925002217245826262&zx=7e5f21ae-d031-4491-8be2-ec0d2c1b5b73' media='none' onload='if(media!='all')media='all'' rel='stylesheet'/><noscript><link href='https://www.blogger.com/dyn-css/authorization.css?targetBlogID=2925002217245826262&zx=7e5f21ae-d031-4491-8be2-ec0d2c1b5b73' rel='stylesheet'/></noscript>
<meta name='google-adsense-platform-account' content='ca-host-pub-1556223355139109'/>
<meta name='google-adsense-platform-domain' content='blogspot.com'/>

</head><body>*/</style>

<style>/*
<script type="text/javascript" src="https://www.blogger.com/static/v1/widgets/3000588928-widgets.js"></script>
<script type='text/javascript'>
window['__wavt'] = 'AOuZoY43vvwaKacQXwK0PCVwgNkQZrKfjg:1753022434577';_WidgetManager._Init('//www.blogger.com/rearrange?blogID\x3d2925002217245826262','//archivetosho.blogspot.com/2022/05/ltspice_7.html','2925002217245826262');
_WidgetManager._SetDataContext([{'name': 'blog', 'data': {'blogId': '2925002217245826262', 'title': '\u79c1\u306e\u56f3\u66f8\u9928', 'url': 'https://archivetosho.blogspot.com/2022/05/ltspice_7.html', 'canonicalUrl': 'https://archivetosho.blogspot.com/2022/05/ltspice_7.html', 'homepageUrl': 'https://archivetosho.blogspot.com/', 'searchUrl': 'https://archivetosho.blogspot.com/search', 'canonicalHomepageUrl': 'https://archivetosho.blogspot.com/', 'blogspotFaviconUrl': 'https://archivetosho.blogspot.com/favicon.ico', 'bloggerUrl': 'https://www.blogger.com', 'hasCustomDomain': false, 'httpsEnabled': true, 'enabledCommentProfileImages': true, 'gPlusViewType': 'FILTERED_POSTMOD', 'adultContent': false, 'analyticsAccountNumber': '', 'encoding': 'UTF-8', 'locale': 'ja', 'localeUnderscoreDelimited': 'ja', 'languageDirection': 'ltr', 'isPrivate': false, 'isMobile': false, 'isMobileRequest': false, 'mobileClass': '', 'isPrivateBlog': false, 'isDynamicViewsAvailable': true, 'feedLinks': '\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22\u79c1\u306e\u56f3\u66f8\u9928 - Atom\x22 href\x3d\x22https://archivetosho.blogspot.com/feeds/posts/default\x22 /\x3e\n\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/rss+xml\x22 title\x3d\x22\u79c1\u306e\u56f3\u66f8\u9928 - RSS\x22 href\x3d\x22https://archivetosho.blogspot.com/feeds/posts/default?alt\x3drss\x22 /\x3e\n\x3clink rel\x3d\x22service.post\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22\u79c1\u306e\u56f3\u66f8\u9928 - Atom\x22 href\x3d\x22https://www.blogger.com/feeds/2925002217245826262/posts/default\x22 /\x3e\n\n\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22\u79c1\u306e\u56f3\u66f8\u9928 - Atom\x22 href\x3d\x22https://archivetosho.blogspot.com/feeds/3761452280347317209/comments/default\x22 /\x3e\n', 'meTag': '', 'adsenseHostId': 'ca-host-pub-1556223355139109', 'adsenseHasAds': false, 'adsenseAutoAds': false, 'boqCommentIframeForm': true, 'loginRedirectParam': '', 'view': '', 'dynamicViewsCommentsSrc': '//www.blogblog.com/dynamicviews/4224c15c4e7c9321/js/comments.js', 'dynamicViewsScriptSrc': '//www.blogblog.com/dynamicviews/f83d6ccfd668d6f5', 'plusOneApiSrc': 'https://apis.google.com/js/platform.js', 'disableGComments': true, 'interstitialAccepted': false, 'sharing': {'platforms': [{'name': '\u30ea\u30f3\u30af\u3092\u53d6\u5f97', 'key': 'link', 'shareMessage': '\u30ea\u30f3\u30af\u3092\u53d6\u5f97', 'target': ''}, {'name': 'Facebook', 'key': 'facebook', 'shareMessage': 'Facebook \u3067\u5171\u6709', 'target': 'facebook'}, {'name': 'BlogThis!', 'key': 'blogThis', 'shareMessage': 'BlogThis!', 'target': 'blog'}, {'name': '\xd7', 'key': 'twitter', 'shareMessage': '\xd7 \u3067\u5171\u6709', 'target': 'twitter'}, {'name': 'Pinterest', 'key': 'pinterest', 'shareMessage': 'Pinterest \u3067\u5171\u6709', 'target': 'pinterest'}, {'name': '\u30e1\u30fc\u30eb', 'key': 'email', 'shareMessage': '\u30e1\u30fc\u30eb', 'target': 'email'}], 'disableGooglePlus': true, 'googlePlusShareButtonWidth': 0, 'googlePlusBootstrap': '\x3cscript type\x3d\x22text/javascript\x22\x3ewindow.___gcfg \x3d {\x27lang\x27: \x27ja\x27};\x3c/script\x3e'}, 'hasCustomJumpLinkMessage': false, 'jumpLinkMessage': '\u7d9a\u304d\u3092\u8aad\u3080', 'pageType': 'item', 'postId': '3761452280347317209', 'postImageUrl': 'https://www.denshi.club/pc/.assets/thumbnail/it201-1200wi.png', 'pageName': '\u30a2\u30f3\u30d7\u306e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092LTspice\u3067\u8a08\u7b97\u3057\u3066\u307f\u308b', 'pageTitle': '\u79c1\u306e\u56f3\u66f8\u9928: \u30a2\u30f3\u30d7\u306e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092LTspice\u3067\u8a08\u7b97\u3057\u3066\u307f\u308b'}}, {'name': 'features', 'data': {}}, {'name': 'messages', 'data': {'edit': '\u7de8\u96c6', 'linkCopiedToClipboard': '\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30d7\u30dc\u30fc\u30c9\u306b\u30b3\u30d4\u30fc\u3057\u307e\u3057\u305f\u3002', 'ok': 'OK', 'postLink': '\u6295\u7a3f\u306e\u30ea\u30f3\u30af'}}, {'name': 'template', 'data': {'name': 'custom', 'localizedName': '\u30ab\u30b9\u30bf\u30e0', 'isResponsive': true, 'isAlternateRendering': false, 'isCustom': true}}, {'name': 'view', 'data': {'classic': {'name': 'classic', 'url': '?view\x3dclassic'}, 'flipcard': {'name': 'flipcard', 'url': '?view\x3dflipcard'}, 'magazine': {'name': 'magazine', 'url': '?view\x3dmagazine'}, 'mosaic': {'name': 'mosaic', 'url': '?view\x3dmosaic'}, 'sidebar': {'name': 'sidebar', 'url': '?view\x3dsidebar'}, 'snapshot': {'name': 'snapshot', 'url': '?view\x3dsnapshot'}, 'timeslide': {'name': 'timeslide', 'url': '?view\x3dtimeslide'}, 'isMobile': false, 'title': '\u30a2\u30f3\u30d7\u306e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092LTspice\u3067\u8a08\u7b97\u3057\u3066\u307f\u308b', 'description': ' C:\\Users\\hma\\Documents\\LTspiceXVII\\WorkStudy\\\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u6e2c\u5b9a.asc \xa0  TL431\u3067\u96fb\u6e90\u306e\u5b9f\u9a13\u3000 (2)\u3000 \u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9 | \u96fb\u5b50\u5de5\u4f5c\u306e\u74b0\u5883\u5411\u4e0a Raspberry Pi Python IoT spresense ...', 'featuredImage': 'https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_u_GUuCdkabZQ_mBmxf9KmVVGdvdGp_rWk7Vby-Tddcu6JtoJWjVJvF_Qvz3iMX-UfHU-gsOTh8NwiK1XhplBlGJm0EnCVgXk-WBWueo2mebB-u6lJCKCiyFnMnw5DJrA', 'url': 'https://archivetosho.blogspot.com/2022/05/ltspice_7.html', 'type': 'item', 'isSingleItem': true, 'isMultipleItems': false, 'isError': false, 'isPage': false, 'isPost': true, 'isHomepage': false, 'isArchive': false, 'isLabelSearch': false, 'postId': 3761452280347317209}}, {'name': 'widgets', 'data': [{'title': '\u79c1\u306e\u56f3\u66f8\u9928 (Header)', 'type': 'Header', 'sectionId': 'upload-image', 'id': 'Header1'}, {'title': 'Logo', 'type': 'HTML', 'sectionId': 'header-main', 'id': 'HTML10'}, {'title': 'Icons, Dark, Search', 'type': 'LinkList', 'sectionId': 'header-main', 'id': 'LinkList10'}, {'title': 'Menu', 'type': 'LinkList', 'sectionId': 'header-main', 'id': 'LinkList11'}, {'title': '\u30d6\u30ed\u30b0\u306e\u6295\u7a3f', 'type': 'Blog', 'sectionId': 'blog-post', 'id': 'Blog1', 'posts': [{'id': '3761452280347317209', 'title': '\u30a2\u30f3\u30d7\u306e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092LTspice\u3067\u8a08\u7b97\u3057\u3066\u307f\u308b', 'featuredImage': 'https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_u_GUuCdkabZQ_mBmxf9KmVVGdvdGp_rWk7Vby-Tddcu6JtoJWjVJvF_Qvz3iMX-UfHU-gsOTh8NwiK1XhplBlGJm0EnCVgXk-WBWueo2mebB-u6lJCKCiyFnMnw5DJrA', 'showInlineAds': false}], 'headerByline': {'regionName': 'header1', 'items': [{'name': 'timestamp', 'label': 'yyyy/MM/dd'}]}, 'footerBylines': [{'regionName': 'footer1', 'items': [{'name': 'icons', 'label': ''}]}, {'regionName': 'footer2', 'items': [{'name': 'labels', 'label': ''}]}], 'allBylineItems': [{'name': 'timestamp', 'label': 'yyyy/MM/dd'}, {'name': 'icons', 'label': ''}, {'name': 'labels', 'label': ''}]}, {'title': '#You may also like', 'type': 'HTML', 'sectionId': 'ads-post', 'id': 'HTML15'}, {'title': 'Categories', 'type': 'Label', 'sectionId': 'sidebar-static', 'id': 'Label10'}, {'title': 'Hashtag', 'type': 'Label', 'sectionId': 'sidebar-static', 'id': 'Label11'}, {'title': 'Blog Archive', 'type': 'BlogArchive', 'sectionId': 'sidebar-static', 'id': 'BlogArchive10'}, {'title': 'colored SVG Icons', 'type': 'HTML', 'sectionId': 'footer-widget', 'id': 'HTML1'}, {'title': 'Copyright', 'type': 'HTML', 'sectionId': 'copyright', 'id': 'HTML23'}, {'title': 'SVG Icons', 'type': 'HTML', 'sectionId': 'jet-options', 'id': 'HTML24'}]}]);
_WidgetManager._RegisterWidget('_HeaderView', new _WidgetInfo('Header1', 'upload-image', document.getElementById('Header1'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML10', 'header-main', document.getElementById('HTML10'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList10', 'header-main', document.getElementById('LinkList10'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList11', 'header-main', document.getElementById('LinkList11'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogView', new _WidgetInfo('Blog1', 'blog-post', document.getElementById('Blog1'), {'cmtInteractionsEnabled': false, 'lightboxEnabled': true, 'lightboxModuleUrl': 'https://www.blogger.com/static/v1/jsbin/3209631219-lbx__ja.js', 'lightboxCssUrl': 'https://www.blogger.com/static/v1/v-css/123180807-lightbox_bundle.css'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML15', 'ads-post', document.getElementById('HTML15'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label10', 'sidebar-static', document.getElementById('Label10'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label11', 'sidebar-static', document.getElementById('Label11'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogArchiveView', new _WidgetInfo('BlogArchive10', 'sidebar-static', document.getElementById('BlogArchive10'), {'languageDirection': 'ltr', 'loadingMessage': '\u8aad\u307f\u8fbc\u307f\u4e2d\x26hellip;'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML1', 'footer-widget', document.getElementById('HTML1'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML23', 'copyright', document.getElementById('HTML23'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML24', 'jet-options', document.getElementById('HTML24'), {}, 'displayModeFull'));
</script>
</body>*/</style>