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更新自动建库工具PCB Footprint Expert 2024.04 Pro / Library Expert 破解版

[光电电路] 门铃电路图-BirdieDoorbellRinger

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admin 发表于 2013-1-16 13:11:45 | 显示全部楼层 |阅读模式

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门铃电路图-Birdie Doorbell Ringer:Notes:P1 is of experimental value. Start with 220ohms or so and modify to suit your needs.The transistor is a general purpose kind and is not critical;almost any pnp type will work.
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