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hi ,
please i need a write code for mifare-card 13.56mhz , h can read id of my card but i failed to store data on my mifare (rfid card)
i use Arduino uno & NFC shield
:cry: :cry: :cry: :cry: :cry:
توضيح بسيط الاب امب بدون بور و بدون دخل اشارة مش حيصل حاجة خالص و لكن لو في دخل و ما فيش بور حيحصل تكبير لضوضاء فقط و لكن لن يسخن او يحرق و نفس الحالة تحصل لو في دخل و بور و متوصل بمقاومات كبيرة جدا او مقاومات صغيرة جدا و لذلك يتضح ان فائدة المفتاح فصل او توصيل البور عند الوصل يحدث تكبير لاشارة...
if you remove the dc supply , the amplification operation will continue until the amplification linear relation match on y-axis (from gain characteristic ) to be one line and then the device will damage , so as you said we put dc supply to limit amplification operation
for more information you...
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