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7 天
用PIC16C54制作简易AM频率计
目前,市面上有许多AM调幅的无线电控制产品,如汽车防盗器、玩具等。它们的遥控器发射电路大多采用LC振荡电路,容易发生频偏,影响遥控距离及操作。如欲对其进行检查或调整则需用频谱仪。频谱仪昂贵、笨重,仅适合于实验室使用。下面介绍的电路 ...
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Israel bans UN relief agency
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Jamshid Sharmahd executed
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Organ donors opting out
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Massachusetts brush fire
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Ballot boxes set on fire
Nobel laureate hospitalized
Announces stock offering
CA electric motorcycle plan
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