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  1. E

    One more schematic clarification

    Does the dot have any significance?
  2. E

    One more schematic clarification

    Could you please give example to understand better.
  3. E

    One more schematic clarification

    Sorry that I have to post multiple threads on schematic clarifications. Now I am finding the schematic with 0 ohm resistor. What does that mean? Will it have any impact on the functionality? Was placed for some other purpose?
  4. E

    What is the component

    But it is mentioned in Ohm similar to ferrite.
  5. E

    What is the component

    Please help me to find out what is the component .It looks like a ferrite, but the symbol is different.
  6. E

    Electric circuit problem

    Then eq1 will be Ic1 = 1mA, Ic2 = 1 mA. I green before R4. I don't think i am getting correctly.
  7. E

    Electric circuit problem

    I am trying to solve the below circuit, It was created by me, may be it is wrong. These are the equations i have written if the input is V1 is 5V Q1 is ON Ib1 = (5 - 0.7)/1k = 4.3mA 5 - 5Ic1-Vce1 = 0 -> eq1 5 - 5Ic2 -Vce2=0 -> eq2 5 - 5Ic1 - Ib1 -Vbe=0 ->eq3 can i assume Q2 ON in the above...
  8. E

    Circuit component clarification

    But how to get the information about the frequency? It is USB to serial interface, so i need to find the frequency which will affect this communication? If the capacitor is allowing the high frequency current components that are blocked by the ferrite, then what is the purpose of the ferrite?
  9. E

    Inrush Current for Capacitive Load

    I am not sure why you have considered 1us, in case if i consider 1ns it will be multiplied by a factor of 10^3 or 120*10^3 A, which is wrong i think.
  10. E

    Circuit component clarification

    This is a UART circuit i am referring to The top L45 600 Ohm, i assume it is inductor but it mentions as Ohms at several places in the schematic for each power source. Two questions are 1. Is it inductor or resistor and the ohm is printing mistake? 2. What is the purpose of placing the...
  11. E

    Inrush Current for Capacitive Load

    In most of the books i have come across there will be a statement which considers a case where the frequency of the sinusoidal signal is "0", which is a pure DC. That is the reason i have put the formula, one thing i forgot is, this is applicable when the 12V has become stabilized or linear, but...
  12. E

    Inrush Current for Capacitive Load

    What I am trying to say is the inrush current is simply V/R. Why is it required to use dv/dt may be in this particular scenario.
  13. E

    Inrush Current for Capacitive Load

    The standard ESR resistance is between 0.1 - 0.01 Ohm. If i do the calculations, Inrush current = 12/0.1 = 120 Amps. The current formula is = 12/0.1*e^{-t/RC} = 120*e^{10^6}*t; Is this correct? The LTspice also shows as 120A. But i am confused of the formula dv/dt, i am not calculating dV/dt...
  14. E

    Inrush Current for Capacitive Load

    I read that for the capacitive loads there will be inrush current. But if you see the circuit below or in general and if a step input of 12V given, As per the impedance formula the Z=1/j*w*C, the capacitor shall offer infinite impedance and the capacitor will act as open circuit and the...
  15. E

    Microcontroller Hardware design schematics

    i find in many of the microcontroller based hardware schematics the power provided to micro consists of several capacitors in parallel, what is the reason? For example What are the other checks to be done, as i need to do a hardware schematic. Please advise.
  16. E

    Microcontroller Interrupt Clarification

    I wanted to know, if i setup a 1us timer interrupt in a microcontroller, and also reading the ADC interrupt or any other interrupt and if i exceed the 1us interrupt and the current code of execution is in ADC or other ISR, then it is not correct method of design or programming? Or based on if...
  17. E

    Circuit Analysis

    Surely i will do a better job and update accordingly.
  18. E

    Circuit Analysis

    I want to do circuit analysis for below circuit "I" is the current source of type sine wave, The equations are 5 - 10 * i2 - 1000(i+i1+i2) = vout -> eq1 Integral(i1) dt * 10^6 = i2 -> eq2 I +i1 = i2 -> eq3 Please help me to know if the above 3 equations are correct?
  19. E

    Phase voltage Measurement

    If i want to measure the 3 phase voltages and currents using simple microcontroller, i observe that there is a current transformer with output given to a micro controller i can read the currents. Do we have any similar devices to measure phase voltages up to 400V using micro controller, or any...
  20. E

    Circuit Simulation of LTC3703

    One additional requirement is the efficiency shall be greater than or between 90-95%. Can it be achieved?
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