门铃电路图-Birdie Doorbell Ringer

  作者：dolphin 时间：2011-07-18

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.

关键词： 门铃 电路图 -Birdie Doorbell Ringer

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