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.]]>

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]]>

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

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]]>

This is the error message.

Each physical network must be connected to exactly one Solver Configuration block. There is no Solver Configuration block connected to Physical Network with the following blocks: 'untitled/AC Voltage Source'

View attachment 120986

This is the matlab simulink file...

Matlab - simple circuit - unable to run]]>

So I'm trying to figure out how to create a buffer that implements restorative logic using nMos and pMos FETs.

All of the googling I have done returns either dental or punitive measures, so I figure I'm using the wrong terms.

Can anyone point me in the right direction?]]>

My attempt at a solution:

Ic (sat) = (Vcc - Vce (sat))/Rc but Vce (sat) then work out whethere Ib is capable of producing Ic (sat) but Vce (sat) isn't given. It's only a two mark question. Please help.]]>

Number of Magnets = 24

Br of magnet = 1.32 Tesla

Number of Coils = 9

Number of turn per Coils = 350

Coils are Star Connected

Voltage Ouput Needed = 40v

Req'd

RPM = ?

Ive search the web yet unfortunately found nothing. Im not sure if i overlook something. A hint will be a big help! Thanks!]]>

I'm currently stuck on a conceptual part of a question. The circuit is a parallel RLC in parallel with a current source. The values are R = 16 ohms, L = 0.5H, C = 312.5 uF, iL(0) = 0.25A, and Current Source = 0.25A. The coefficients for the solution are equal to zero for v(t), t>0. How do I make sense of this? If I understand the solution correctly, the currents through the capacitor and the resistor are equal to zero for all t and iL is constant for all t. Is it even possible?...

Understanding RLC Behavior]]>

For the circuit in

If the output transistor is charged with capacitor

Given data:

Note: This is not homework, I am...

Circuit with transistors and diodes]]>