1. S

    How to find the frequency of an implant?

    I know there is an implant in my auditory system. I think it only receives signals and it doesn't transmit anything. I will not share my evidence and reasoning for my belief, you can either believe it or not, however it shouldn't negatively affect your ability to answer the question as it...
  2. Z

    Sine and Cosine in Real Life

    Hello, first of all, I'm sorry if this is not the place for this thread. I want to ask, whether is my understanding about sine and cosine in real life is correct or not. I came across this a question(about conventional DSB AM to be specified), where we have two signals m(t) = 2sin(2000*pi*t)...
  3. A


    hi to all i have a question about the AM signal power in am modulation in attach file i have derive the power of am signal but ther a term <m(t)> is the mean value of message i can ignore this term generally or in the case where the m(t) have zero offset? thank you George
  4. A

    Documenting a TRF Radio build

    Greetings, I'm new to electronics and am interested in the field just as a hobbyist. I've read the Complete electronics self teaching guide by Boysen and Kybett and am now moving to Basic Antennas ARRL and Building your own transistor radios by R. Quan. To be honest im attracted to RF...
  5. G

    H bridge problems using IR2110

    Hello, I designed attached circuit to drive H Bridge. My generated input signals are in attached picture, duty cyce that I am using is 40% for each signal, 99 kHz frequency. As result I am getting really bad shape of signal on R9 resistor. I am no getting steep signal when I turning H bridge...
  6. W

    proximity sensor 2 meters

    Hi, can anyone help me with ideas on building devices that produce an audible signal when come close to each other, say 2 meters or less. Both devices continue signalling until they are two or more meters apart. Think about a microphone moved close to a speaker - you hear an unpleasant...