Hope I'm creating this thread in the right place...

I need to add a new Diode to LTSpice to perform some academic simulations but i don't know how to do it.

Adding just a Spice Directive looks like it's not enough...

Can anyone help me?

I have this settings to the Diode 1N4001:

Code ( (Unknown Language)):

- .MODEL D1N4001 D IS=29.5E-9 RS=73.5E-3 N=1.96 CJO=34.6P VJ=0.627
- +M=0.461 BV=60 IBV=10U

The differential equation is found and is given as followed:

View attachment 121457

It is a second order system with constant input.

so what can I say about dynamic and steady state response of Y(t) to a step change in the setpoint?]]>

One scenario the Rf is replaced by a 10K Potentiometer and the resistance is...

741 OP Amp Lab]]>

I am studying Matrix chain Multiplication to find out the optimal way of multiplying a series of matrices so that we can reduce the number of multiplications. I have got this example from the book which multiplies the matrices having dimensions given below:

A1 30 * 35

A2 32 * 15

A3 15 * 5

A4 5 * 10

A5 10 * 20

A6 20 * 25

From these matrices, it creates the 2 tables m table & s table which are uploaded:

View attachment 121387

View attachment 121389 ...

Matrix Chain Multiplication: How to determine optimal way of multiplying matrices?]]>

Connected rbi rbo and lt to supply 5 v

And connected outputs to 7 seg.

But it doesnt work. Tried using switches and connecting the input pins to ground or supply. Had no problems in 7447.

P.S. already checked data sheet but I just dont understand how to make it work.]]>

The above is my answer]]>

Now i'll represent what i have so far:

1)

This one is quite easy, so i'll just upload image with the final result (i have values of all currents and voltages in the circuit even though we're mainly focused on the values of base-emitter voltage...

Analysis of the CE amplifier using OrCad Capture.]]>

Logic circuit to detect error(basic problem)]]>

1/Z=sqrt((1/R)^2+(1/2*pi*f*L)^2)

but in a book i saw 1/Z=(1/R)+(1/(2*pi*f*L*j))

what is the relationship between the two My idea is that the first is only the magnitude . The second are vectors instead of only the magnitude but can anyone prove the second]]>

How do I find the closed loop transfer function?

Can anyone give me some hints?

Do I do the closed-loop for the small feedback(the one with -0.5) then follow by the big feedback(the one with -1)?

If so , the small feedback loop is it equal to z^-1 / (1-0.5z^-1) ?]]>

hi

i'm designing a code converter for a BCD to 6-3-1-1 code and having a bit of trouble with the state graph, can anyone give me a starting point. i know you are not allowed to help me on my home work. but just need a little guidance on how to start.

below i have attached a copy of the state graph that i have already attempted just havent got a clue on how to start

thank you]]>

I am looking for help to answer an assignment question regarding a linear PCM system which has a 7-bit A/D converter and a +-10V input range.

I am asked to calculate the quantisation noise power and the output S/N ratio for a sine wave input of 20V peak to peak.

I am not very confident in my effort so far as I dont think I see where the 20V peak to peak comes in:

Quantisation level, L = 2^7 = 128 levels.

Quantising noise power, ē^2 = U^2/3L^2 = 20^2/3(128)^2 = 400/49152 =...

Calculating quantisation noise and S/N ratio in a PCM system.]]>

I have to design a circuit in Logisim that can multiply two 8-bit signed binary integers in two's complement format, producing a 16-bit signed result. I would like to do this using all combinational logic. I am a novice to circuit design and I am unsure of how to go about doing this. Attached is the document I have thus far. I would like to use a series of carry-save adders to produce each of the partial products and at the end invert the partial products so that it is in two's...

Designing a circuit in Logisim that can multiple 2 8-bit numbers]]>

And no, it isn't a homework project, but i'm an absolute n00b. I wish was taught electronics at school :-(

But i'm trying to learn, and just lurking this forum has been a good help!

So far i've completed a few projects where I could copy the layout one-on-one,...

CD4017 'traffic light' with button]]>

View attachment 120718]]>

I have set three different temperatures in

My question is how to get...

OrCAD - Temperature sweep]]>

- -LT left turn switch — causes blinking of left side lamp
- -RT right turn switch — causes blinking of right side lamp
- -EM emergency flasher switch — causes blinking of both lamps
- -BR brake applied switch — causes both lamps to be on
- -BL blinking signal with 1 Hz frequency

- -LR power control for...

The rear lights of a car are to be controlled by digital logic]]>