Is it possible to draw this in a circuit diagram?]]>

View attachment 131363

I found out the current to be V=13.33V, I1=3.33A and I2=0.7278A. I was later asked to find the same currents (I1 and I2) after the addition of a new resistor using mesh analysis.

View attachment 131364

After applying mesh analysis(supermesh),I got the same value for the two currents. How is it possible that the 2 currents were not altered by the new resistor? Also,...

Determining the Current using mesh/nodal analysis.]]>

- I need my heart rate signal to be converted into a form that the Arduino can take(5v) into its analog Input.
- I need to convert my signal into a pulse form
- I need the Arduino code to start counting the number of pulse for 1 min as soon as a button is pressed and then displaying it on a 7 segment LED or an LCD screen.

I am an undergrad student of electrical enginering and I am designing a colpitts oscillator. For a starting point I used a schematic in the following link:

http://www.learnabout-electronics.org/Oscillators/osc24.php

The requirement for my design was that the circuit oscillates at the frequency 30-40 kHz(inductor L1 in my design is variable,so frequency varies).

I made the following adjustments:

values of C1 and C4 large(I used 47 uF and 10 uF, since C1 and C4 represent...

Questions on colpitts oscillator operation]]>

I think we can start from area of triangle which is given by:

I can do some work to transform CE into AD or in my opinion AD = 3 * CE. But the question does not provide any relation between DE & DG. This is what I want to know.

Area of Outer Triangle composed of 2 inner triangles]]>

I am using an Adafruit Circuit Playground Classic (and it's library) to detect motion with the built in accelerometer. I am attempting to create a motion activated "universal remote control," basically, have the Circuit Playground emit IR codes.

I have code written which works with the Circuit Playground and sends details to the serial monitor when I move my hand in whichever position. I know that my IR...

Help with Circuit Playground Library and IR Remote Library]]>

What are the lengths of sides NO and OP in triangle NOP?

I don’t think that the inner triangle is the 30-60-90 triangle so we cant use the eq of 30-60-90 triangle. However we can use the pythagorous formula to determine the length of hypotnuse of inner triangle. Let X be the other end of hypotenuse of inner triangle:

(40) * (40) + (24) * (24) = XP * XP

So XP = 46.64

Sorry I...

Find lengths of sides of inner triangle]]>

Can anyone help me to identify the main differences between these two types of transmission?]]>

The 5V DC power supply is supposed to represent a 5v USB Socket which a phone charger cable can plug into. I want my circuit to flash LEDs D1 and D3 at approxiamtely 1Hz...

How do I use the transistor?]]>

(Sorry for the Typo in the title, I can't seem to edit it)

View attachment 131062]]>

What I first did was the easy equations for loop ib and ic, but I know I won't get anywhere if I don't somehow relate the 10 mA source or loop ia in with them. The...

Mesh Current - Difficult #2]]>

simplify each k map and write a reduced boolean equation]]>

based on the principles in my text book I did the below:

(zY(z) -zy0) - 0.5Y(z) = 2(0.25)(0.25)^n (zU(z) -zu0))

I am very uncertain on what to do here. Do i use the initial conditions y0=0 and u0=0? I am confused where does the u[n+1] as there are no examples like that in my text book.

regards

Josh]]>

so basically I'm doing a school project in which one of the components require me to use carbon dioxide sensor to sense the amount of carbon dioxide that a person is breathing out. As such, i recently purchase a CO2 sensor from DFRobot, where the model is SEN0219.

link --> https://www.dfrobot.com/wiki/index.php/Gravity:_Analog_Infrared_CO2_Sensor_For_Arduino_SKU:_SEN0219

Thus, as soon as i got the sensor, i had follow the tutorial as posted by the website (above link)...

Arduino Nano with NDIR CO2 Sensor code queries]]>

The second part of the question (b) can be ignored in this topic.

At first I was a little unsure about i3. I thought it was...

Mesh Current - Difficult]]>

I am curious about the equation 2.7(a), and trying to prove it. So, I did my own calculation, and got a different result from the textbook. Did I make a right calculation? Also, I want to know where is the time t = tr? (Since fig 2.2 begins at time t = t(k-1), not t=0)

Thank You

EDIT: The pdf file is cut from the book Advanced Electrical Drives_ Analysis, Modeling, Control (Power Systems).]]>

i attach a picture of this circuit. please your help.

because i must explain it at class this monday july 17]]>

A group can charter a particular aircraft at a fixed total cost. If 36 people charter the aircraft rather than 40 people, then the cost per person is greater by 12$

a) What is the fixed total cost to charter the aircraft?

b) What is the cost per person if 40 people charter the aircraft?

I am not able to form the correct eq. I have developed the following equations:

ExceededCost = 36 * (costPerPerson + 12)

FixedCost = NumberofPersons * costPerPerson...

Fixed Cost and Cost Per Person]]>