From: Subject: EDN Access--03.14.97 Figure 1 [DF04] Date: Thu, 7 Apr 2011 20:10:37 -0700 MIME-Version: 1.0 Content-Type: multipart/related; type="text/html"; boundary="----=_NextPart_000_003C_01CBF55F.DC61B440" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5994 This is a multi-part message in MIME format. ------=_NextPart_000_003C_01CBF55F.DC61B440 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Location: file://C:\Documents and Settings\Dan Fraser\My Documents\_TruTechnology\Design Info\Power supplies\Topswitch SWPS.htm EDN Access--03.14.97 Figure 1 [DF04]
=
Figure 1
This typical flyback power = supply=20 operates from 85 to 265V ac and delivers 30W at 15V. The = supply uses=20 the TOP204 TOPSwitch device, a complete = switching-power-supply=20 controller with protection circuitry in a single three-pin = TO220=20 package.
= Back

| EDN=20 Access |=20 Feedback | = Table of = Contents |


Copyright =A9=20 1995 EDN Magazine, EDN=20 Access. EDN = is a=20 registered trademark of Reed Properties Inc, used under = license. EDN=20 is published by Cahners Publishing=20 Company, a = unit of Reed=20 Elsevier Inc.=20
------=_NextPart_000_003C_01CBF55F.DC61B440 Content-Type: image/gif Content-Transfer-Encoding: base64 Content-Location: file:///C:/Documents%20and%20Settings/Dan%20Fraser/My%20Documents/_TruTechnology/Design%20Info/Power%20supplies/Topswitch%20SWPS_files/06MS1871.gif R0lGODdh+AG3ALUAAP///4CAgMDAwEBAQObZ8wAAANnZ5ubm8+bm5vPm8/PZ8+bM83Nzc3Nmc3Nz gGZmc6ams4BzgIBmgLOms6amprOzszMzM6aZs7OmwHNmgEAzQGZmZpmZprOzwDMzQLOZs8CzwMCm wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACwAAAAA+AG3AEAG/sBBYEgsGo/IpHLJ bDqf0Kh0Sq1ar9isdsvter/goxBALpvP6LR6zW673/C4fE6v2+/4vF5d3K8FQwIAAQOCfnSAAQIC Y4eOj21DkJOUlZaXmJmaboyFcYugi0SCiwClpqSGk6WhZYShqpuya5Kztre4ubq7ZLVtjAXBhb58 wQUDjXOdsbzAnn6dyKmoZad5xLzZctiy3Nrf3mbhcqyGiUzJl8Tj58yQvuyj1Lvj3/Zn8EKAQumP 9fd4iBwLBOffvzeSAvXjE4CeokDnCA4q0PDgHiL6EgkKQLFXw1sWAeZaNugjSJMi6RAacGxjy0FC FIkaQlHSOWQYUXrUk7Ci/jB3uCwCEmUopEqdaYYO3ekw5aGldzqtdAfsJSZf1tIYdXrUEiMiJQM+ 4ySRDVR7Z6GVtVRPoymJbn+RWgiQZFyzqkjuiYhz7VuZoCZ+JKSI61+gbLaaZdly37CKSLdFnsPR GE44zrQgNtx1VV5SEP0yRTg50mSp0jCn1ouvNOnFTuwRJrpvSEzaa6taBuotq+mSrH9hjCma0k3i hc8s5RhZMWeGIo06DxvJU3AyqDv+vjP9+SGDk0P2hJk8jmKNp2AR9I2GW6tTr7Cr6u7dletc0k3m K/rsa8D7iQEYYH1BjWWYM5tdgmAdtWxVzmGG0fdIREYk+BcVFm7HoIC0/nBIYEmzHUZhghLip48t EibSV3mgwDXTNKwUp0uJlORnSmqvcedhezvy+KEjjm1G40gZvtMjdD92Jk4wg+kz3DD8VISMdhua dyR1dtAn4ZBJ/kGIMHR1qcmQXEZ45YIThqnVlTyxedGRATBgwAIKIDBnnXfaSaeeeO6Z559+Btrn oHY+cNp6o7h112hWohKfmJS5id1KyZXjH6SMNlOemfjB2QABBxxAAKiikjpqqKeWiqqprK7qqqqw juqApBc1VpR2IXIXZUpknjgPe2KWWYc1wC6K6ZsqRZCAnQQsa0CzzDoL7bPLUjDBBAxAMO220nYb bbQM0PpdQ27RCJWx/tmQKe5zwuYRo4zHIkuZnIIiQIEFFlAAQQYNbMDBAhIgI0EIATjAr78AM0BB AxNQsAG+FjyQMKB4GmocSwYi9Jg4bDIn2I0ZdypvvAOSbHJBnrYaq8qptszyy6/Kum6H1eDI7sw5 XoMzV+2ezCllyn5LrdDcEu3t0EgXTW24FxYBCJM7JURcbUWV1rM/O2v4n89Icu11ayrRSyjFfJZN 9tn1/mlxJeNcHWzWX9sX99zkhWH33UqoSRjefHehJt1Zwg344ISzexsvbr9d+OKMEwki1Mxx5Csf hXwlUJTlPrTpU4hWqnniPAve+OikD2vzNj9Nh251lCKDk+v87IrZ/uZ66JXTRmDpXHrtfSPB2EC9 B88FY8ghUSTKko25Y1o1esh8U7tvHZToJoPXJnCNVCaME79DfX01MJozDRqrK0ns+MXCyzb1gGMF USqXOgI6Z719aQyVYOsutfp/Ec+/knhRVGCMxIkXoQJY3WCfyCoRjZBlYn7HwsrxPkEc7DlwMVaB BvEmiAk07QV2tSnMbBpUhJgwxjX1gIf3cpWYyUFCKcmJHJgEpBsmBYcVv7ugH+DhIQimS3QkGY+O zHO4P3AwegB0wyuk0gSMvW57vrMMFI7Yi+KxBG6SK2GP+DI1zFARcbeJH/kwAjzakWNTloOMx270 E61lqY3S0WH5/uTWPiASpBbteJ6NkuiKYdwvg0v6o+sQsyUF2iIu6TFgjHhzHzySsYeQmQgg1XAc pynxRJTKiQgjU8lEScSR/Nnk4HzIxw7pRkDdaeAXC4nEP2yQZpSjVCJ8pJArsRBFLqwSynLyN3AY UpehG6IwW9m1YP6QJ8aI5OM6srdAjFBK/0tgdHa0RIzZxnUr6Usv3Zi8YXptKS0CjfpImTyBIIE8 G8klAb8nF1jgjpyBm2ajrgPLeNrzntFzzCd/eTJ1jRIpiAwNYKjRCgiVspibgGf+zii8J3wxZ8RU Iq2CQ5htEkh1GHuoKycJEIVyLFlHU5pIQ0pSo4ErPLfZH1Eq/qMTj2KqRPqsGjpJ5lJKjuJRvCpe 73LIwTihbWxpCypQh1oofhZQPgfUqBkehMAF6q6OI3mfCpUZUSyZ51Mxg5mqGKCBDDjAAReYwAAc 4LKsZnVWMx3P5ZypH3UOa3xIfWuLzAi9p9KtpkkRJ11b6ZwABC1pCaAAB5pFgQdgYFkQOCwCIDCr CiQWsYpNLAgq8KzJPtZoTLvYIBtlrsKAc690fOC68CrNqtanr2Izm1BVS9Sfmm1tnxWnbPPo2Vj0 5nTyVN7I5kZa00ZKJVhdmVmFS9yyFpcADtCp35R7zYZGoXvM9cKKsKDU0xrVt3bFbmh9FNHefsi7 2g2veMfb/jzymve86L3oddPL3riNp6lXMQl8CQfe9tr3haEJhUz2C9okzfef9w3wNwHDHBiCVoZF AJ4Bj2Acz92quaOrr4AnzMCpRGU+6yWvhCnMYUTwLxraoVAU7xfdvJEYCjh61BrXyER0SHEL0vAP W2XLzg5r4nmm/e/1xJiUa/YSKt3Z8HZ/JGT13qIqOtwdkoWU4SGvr1GiRd49imxdp2rXevpTBI7m uNRodjOmb9BxlcBcnerulr14pfILZ+JlLG8tIT+hp2/a4a4SdtEjSKjJYJjp1jDbWR720S9YVtxn tjSZpm19yOHE3M069oTHrvij9xY6RJWyLoT9LQhxtHkk/kazrrmE+YSZz5xeoYya0sdCD/xmK755 wJmjTu5KLacMIBU9ow/r9JKFQXToWEcQiDKdXj/JNWNFy3JEC3XPFaTxaIuWltZekQey1VOhkvkM PZnGS836sxrcTsJB2a4eEK8YFkdKIYd+e7Fzk4BuGFeugipt0IokiT/uYgrZMFnEFYVCxjYqx3WS pp5NZGnTnABYs7NkJfLUfPCusbSKmZ6Np0U9j6Qq5Xg1BFAWvT0ubVe8y+EmMvvSaNWDhtklt+41 VMnB8ZML59SIaHnMk+zhzWgkRCtWOWfJVSQuac86zI5ki6ebtxI/oXtQbGIys+ve5YHQz+aAlwe5 CVHs/tgMx+RjxnUUbsRfrdq/FjolLYzOBNyFhYmvtPZTJphCnn/c1z67Wlyklk667PG3lGz3XlXk 7zVJL+9Ty9yUfTXwT+6KWKA248Ch2wSZznpwwGK4/HSOULVDOTG72ejSccz1KzfyNMdrti17hHOc 0DlT9sbzYPbcJFGuHNrIm3o9Kchtmqfe5MR0Mz6O4cTcfXR/IS85ikZL+Sh3FJKTCv3y9ulN3OdT 78arHYwyefQTO7d7nQ62n40dfCv7kvbZjJ02gefs2eMdn9iVfJdh3nyGfsmEne7+8HO7fQz93flU T/UA7++UPJp+/lGBdIRHEx1xejcXSRtWXyIGaMLh/mDJ94BM12jAFHdioGi/g0LFpxytlkg9Jn/n x39d53UTB4CwpzFR9xngA3dVJ4H4900yp4LCNiLlgkm/5E+XZGza5xRUlh/aU2+Vx4JAGISMQ0/C N142eFcZiGqWJ2XoJ4RM2Epip37HR2peww0Ph04Mtjd154OXJ1HDggVEJwVKJYV1dV5HyFtJ+FFP mFC91ld/NVImBVhxCIdLIzrOwWVNxzsptmjs530IwUxlpAXQtwTlN3l+qETBZVyKqFWLOFwyAx2a pE+S1FJnUil9aEx4ECSUdIknEWBpBiep5VqiuFqi+ABkVwXO5kxjAGSFhmh6mHIG9WvfF1c6eGiQ /qZEb1hScriLdDhSmaULD5JvtKgrXkaCIFiFaXhesoeIjNiMjuiMpYJWx5QE9EV8DTd8JBRp0MSJ ijMvowhUElAAEoMnYcVa5qg2H4F44hMRoEFjHXUiI6hbNZaHIhGPheOGutiL3SJY+ohZxOZZ8rAS zPQ5VIMsjvR/yEiFXJOAFGGP95gyZ0VWDcAAB/BVB8BVEVABFTAByPVVX1UAFgABF/kpDuABHuAA I/kyyRUGjIdiNXGKhIhN1oRNC2hw8hiBCWljz2YeoUiKPtlapLg25UWEPuKQO2RUZ0iPOnmT5pGL c5iPUPmUv/htOkGUJRhfCkmBS8mGwAWNjXhc/s+4KmiVjQKBK9AUariGejCIOEhpja+3leoAit94 jj9JlxXDPm2TjEuVUUzZfjkJl3EJUk85mLwYlXVoaOZ3D3jYcehFhukXf+tWdoj5g6XjmNpgmaaF mYeolpWpl5gImKAZmqUGk5FZmqZ5mqiZmqq5mqzZmjYpmrAZm54nm7R5bcXoFdzYjbW5my9FVZvZ mbwZnJ5hlDe4X7l5g/rmmbOgmcL5mOSEdcZIOszZnL61PyvyOq2YSHO1HhuYm+eTdcTZJdNJnekX O8NhPyhUE3qWRfz1Tr4HJJ3zYJQSYcpJngJmlVoBfwIJGZmzmHZwcUC2nvU5mfZZoECCkHtx/pzK oKA3Y6AOmia2F0tmtwl0piid44ET8hkCFJ7j+aDktQzQ2R6WUYhW13ecsIoZhSALglMYFKGqsVkY UTU00qEeSjr4WaIv0UzsJkhU4D9RgIIQeBY1KQbqlgUxNgYDl4N+WaNMSkdNtQ/JZBADMUsTqA23 mIm3uaRNWqIuOjo3Kn03wiG1QQ4PtYMD6oX3paPB05KueZpsWoFr54RY8wlZWqW6xqByaoS2+ILP l2SfyJRNZRMKKkE0E56MaV9/Kl66F082EYbRZ3xkNkatRpVvgaDKAZB4mn/mlajhtahVYk44anuZ Uad+t5bGV4Q9lqlL2JhteKZsqak7Vzf2/nOK7TZq3jBj+LYcrdiFHINtmApxqmqqs/mAp0epjjYQ qfh512Npb8eZe6EEGJZnueMxt+R+R2BbMqF6HzNTy+mqtdhH3JebNEqnmQRXl0p9jLSsWoZKBDZQ vJMEKMiB1hAfRjmksTBX4/MohmqnrNpH8LauuUY375GcxSBI6ZplkpRkX4Ea2eouGDaMh/SwzUo/ 3sor7BqwjRN5WpZ5pfpmAOtFqoaxHfh/aWmIZtFc7lmG5gUfrdpPNJlWyMFmd8QPSecOM4qAu7qT uhafxnqy0kaqJnttnBhELVs95imJWohnepZsSKGmYlhuZxmsq5p1Fbevt5dXVSu1HTts/grCp09m MvIKP9UWjGqIqgE4aDRRiZf4pbNwpVExs2hpQp5gBDQ7aVtrtLV1oO82FiF6lHrKQEF3do5KiEVq pNaXmoO4bO9mG3BLpXRrG3Z7tXHXpfk5FwaCGpSrpWOEoeJpR4FLH8uYiXz5DaH7nyDEVO8zKQNV rHcrJmSbHu5KQSZaM+omrvqBgUl1jS/0r8cYS5xLYW2RF3DxP/75hZYkGJVxGUokaZslDn5EYrZb qYWmFCTauQgHtb3rd+MKKW0XabiSs9UKn0QBcV/ynhi0eXT1c8dJqF6ku3qbcJJiFIjUjsKKqCiE SSsEvuRSvUf2RFyID0CXubwKcooU/kM5a71qwSK8q7kFsT1UCnX9uqAM3Axee6IC3IGPWg2p2wvf +7sPVERryB33s7EImI49SpomxqPcU7hTwL8ix3LN24AASVelyzlicMGupFNHdBNlRBU0pq9a+6kf i8HTpVEeRHIKUXsZMqNS5Gw13Lfbu4ItpG+02pCzmsKBSIij9284DHjYmr22GUO1NroYfMLwG0Qj DKuzI8YDXLZTq5UM5Z3lNx23FcA9x7fe1nlr4qsRgRZ5+xawgFTM04MXdLOCmxH/01ttkSh2V7E4 +a6O5yTKq4SJKcWhOkGYS0jxm56OWrxjAo9stUT78MDe+0fNIV+v6YWgusYZrCDQ/gobrfuXE8LG NzfJbqzGlAliptxjAshkYExQk2q1O6S8JCRx1yq5H1VDWfyoagXCO3vML6e67jSp5xp937m5E4qE xhEY2knN9UvHoMdGs0u7I0yEelydynqpbIez3acYpYcclZPNCIVrDdLB8qyUsoF8+LdxF6QbNHfO mZnOyExLQ5yn7WF6xnk7ZpspdFbPq1e/3OuZe9S3a0ksp2MXEbfJfzu1arp/cvNqlKvIzqPJ7ntM KCN2aKoMRyrAAB1R+BkOIOYkTcuf/CvSWQmebBbELRidA1LDtwzDZarRV3a4cLqJFmez7MxBS9a/ 42zQ9hGJDTqFTHjNHwdubNyE/k5dOj5dYc/FwjvFsd20FWrVsN8q1SYIMnOBK987hm7S0t3lyIA8 Izi8N0WsEl3cl5e5fALFX63MryGc1cDJGZ78taKbo+lYwKubuoN9qvlMsRP8xrnnrYI6sYxtOrtR zJATz6IwtyXc2NnARQxYcPb32JT5179myM8BTifE06gTcE/tPWA2FMCn06VdH0PaeL8M2Sl9MrZm gde0dJUs2DqdlF+jgH9GvLADue/WGNbE1qRd25Cy2dwHuZFLyU0hg4gSSoPqlg24YOZr1p4dZtkT Yt0Gi8890JYssNlWZD0ROUbAa9xK2LntdRrswVgJ3tvBaG692zvNNVJBInoZ/rZxBcSVjdXYPL+O jd8BstT8/YEO/uBD2HJRrLMGDsdXaRoMjsu6veEcDjj/bd2dyt1oSH9oqt9C7dembaOvNOFcOY/F DVDDCxi0daEadXeAHcspnt5eylMsjtcozrW7Z89ZeDj7+dx0jMI3bAUu7KxKlsqbKuL4zMFCPm+P JhOW2sbQXV7CpqhwbdKiixKsK4sKHtyBueXboAETyQANkOZrzgBqzuZw7uZt/uZyHud0fudzvuYW YIdqS5/ugqBJK27/ad9ZDtGHytqRQJFfueheqVXSKLIpTdGCXjvkBrVua2QqHTvst9WG7rdmzpOF SZj9GOoGIJQArIp0jaSR/nuHnkTbiC67OhTFd4id0uXV8NqJn14QEgCUvG6Xvn4nU/l7jOvbkwji w/rnIeaOYl5zq0DoZY7r26DojR6WYElcj36u07eOfhES+IrN2lzYY0F3k26/v0kLcjLq6G6Y02KK dlMkl1IKhPa7YT6LyP7QcR0vErbY5f7s5rHrv16Xc0kxwX5IgbutM+rM4T3fy/6qM/EzbUvGBSHt 1M7oE68y1066fShEY97fEe3H9Nt/kclT0U7q6S7qR2PqM/KPfbxmF17hQL6leQcn/h7wAF/zCjDw wuY0QLtUQNryPz7uh8R8Dxi+u4Na1a6IDTBWGYABFT9cF+849H0N/eHR/nl900DfrdnIwdtYVahF 8iEVAeJIAA1zLwxg8kJjMecSkDSBOY1bjzd1wN1q9a7oOAUljMI899sw8zZvLx/wAdlCJwwwjv8+ KEwzn2PNnrMk3bbqmz2O3lhu4Yrp6gke7cJVAYEvkhDwACJJABcwKxzZAR3A+Zt/ARCwkaBi+Q/g AKFP+tZ+2BocddwZ14si6WBzkHC/fvd+9wqv4Qu/C+yo+1ePEOd+8mXPAMoS+AQQAcgQAZblAW7+ ABegAXICAQzgLw+ALw+Q/MN/9kjukklXfcOeeFOUGRmVTUugqsQty75/npL/mbo+VIG/AB+wAQ+Q AROAAAzg7xhZMPZf/gEDAASaCYIhCQUgl0ilqEAYFk6oghEAXLFZ7ZabFQwKYWuXGxgIAmPy+vot WANvQPzMTrPxeexdv+b3AQMFA/8GDQ8RExUXy9T6AhgOCAgOJCktKyczLzUxPTtBOUUrHRwZs9K+ 6vLuCk8BXV+3YgdpZW9rTXF3eXtlbf0YDAgSnoiNi4eTj5WRnZuhmaWTH3Rf+VQF8AS0ffWAb8Ef rb3LtcTN09W90WclpKKe4qfk4e3r8en15/mpyBkLZVt3qB3Af7AODuRVUGFDh4IY7okUalPFT6Mu WqToqVSvWAIfskp4baTIkOYinlS5ck7Jc8KmPYsZbVlNmTahVQOA/iYAtzQ948jJZsbMgJ88UZH7 4tJhSkROG7H0yFRq1YZOA7zL12/rvX1euX6t0nKn0ZZBx7QySvSsI2BQ1cHNtUiuVT9U7eYth3Ui xo1//QbWeKnjzp6GtfHsxm1nYp+JU115i3fd0nR191DWe3dz55B8ad4UHZr0TGYP1v5UvZp169YD UrOG7Zp2bdu3X4cpEBt379e8fa8261kRZuLHIVLOCpZ5V+dfn0cZu/CfcV5udnfzZR15cc3dwSOE 2Hdw+YznAVssvGty+Knum36HPz8qoQEMGjRggF8///35/+sPQP8IHNBAARHczwL5TOqCO/qSgnCd ByUEj8IKHayOT0EMI+SQnQ09tBDEEDMk40IITySxQxVZzKxFkkwckcMUW6TxxZV4Ck7HHXnskUft tsjRxyGJLJI2IG+kS8YkmWzSyScfshHKKams0spvggAAIf8LQUNST0dBVEUAAgAE//lVgAA7 ------=_NextPart_000_003C_01CBF55F.DC61B440--