Recent content by PhysicsTest

  1. PhysicsTest

    Engineering Design of Boost Converter

    I am really new to hardware design so please excuse me for any mistakes or i am going in an entirely different direction. I have attempted this, i have no idea if it is correct R = V/I = 24/2 = 12 Ohm $$ V_{out} * I_{out} = 0.95 *V_{in}*I_{l} - eq 1 $$ When switch closed let the ON time be...
  2. PhysicsTest

    Engineering Design of Boost Converter

    Sorry yes it is Boost converter can I go with above specifications assuming 95% efficiency.
  3. PhysicsTest

    Engineering Design of Boost Converter

    I want to do hands on designing a buck converter mainly understanding the selection of component values Inductor, Capacitor, Resistor, Mosfet, performing the calculations of Inductor current, Output voltages and Load currents. My first question is, i want to consider the below configuration of...
  4. PhysicsTest

    Understanding the Boot Strap Capacitor Waveforms

    i have captured the boot strap capacitor waveforms which i have captured while doing the motor testing. Measurement data: Differential probe with 20 as factor, hence the difference is (2.14 - 1.14 )*20 = 20V. Positive side of probe on VB, negative side on Vs. There is offset of -640mV =...
  5. PhysicsTest

    Engineering Half wave voltage doubler

    Ok just to re confirm my understanding The drop across voltage is Vr= 5V, based on the output polarity o/p it is -5V, Is my understanding correct? please confirm.
  6. PhysicsTest

    Engineering Half wave voltage doubler

    Thank you for all the support. I have a very basic question in the circuit before i start attempting when he shows the negative and positive symbol at the output side as above what does it indicate, is it arbitrary or some logic involved in it? Can you please clarify?
  7. PhysicsTest

    Engineering Half wave voltage doubler

    The input is sine wave vi= Vmsin(wt), the problem is it is increasingly difficult to analyze these kinds of circuits for sinusoidal inputs and with positive and negative portions, most of the time i analyze in the mind without the equations and to remember the states is tough. Do we have simpler...
  8. PhysicsTest

    Engineering Rectifier Meter

    Vrms = 1.11 * Vdc = 1.11*5.01 V = 5.56V
  9. PhysicsTest

    Engineering Rectifier Meter

    Fig: Full bridge rectifier output I calculated above parameters for full wave bridge rectifier, so if Vm of the sine wave increases/decreases the Vdc changes accordingly and the Vrms. The corresponding current is Beyond this i am unable to understand the 1mA and full-scale reading...
  10. PhysicsTest

    Engineering Rectifier Meter

    I am confused with the question it falls under the topic of Rectifier meter, I feel the peak of the sine input need to be provided to calculate the full scale reading of the meter, 1mA is the resolution of the meter. Any hint to solve this problem?
  11. PhysicsTest

    Engineering LR circuit current calculation

    Yes i think i have made wrong calculations it is e^-1 and it comes correctly as 441
  12. PhysicsTest

    Engineering LR circuit current calculation

    In the steady state the current through 100 Ohm path and inductor acts as a short circuit, inductor stores the current equal to as below I = 120/100 = 1.2Amps once the circuit breaker is removed the inductor works as current source the 100 Ohm and 400 Ohm are in series and the current after...
  13. PhysicsTest

    Engineering Full bridge circuit with inductor and resistor

    The above is the circuit i am calculating the inductor current. During the positive half of the sine input D1 and D3 are conducting so the circuit becomes My calculations are as below Are the above equations ok? When transitioning from +Ve cycle to -Ve sine wave does the above equations still...
  14. PhysicsTest

    Engineering Analyzing the inductor current in the circuit

    The above is the problem statement a. I don't understand this question, i am assuming the switch opens and closes and based on that i have to analyze the circuit and find the voltages and currents in the circuit. b. When the switch is closed then the zener diode is reverse biased When the...