Plan, sketch, drawing, graph or outline designed to demonstrate or explain how something works.

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1answer
57 views

Help with son's 18 V car

I need help with the wiring on my son's car. I'm trying to run 2 x front and 2 x rear #QG550 12 V 45rmp motors using independent 18 V power supplies, 18 V front and 18 V rear. I wish to keep the ...
0
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0answers
8 views

HSPICE code for eye diagram

Here's the code I used in HSPICE in order to see the eye diagram of a transimpedance amplifier (TIA) in an optical receiver: ...
0
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0answers
28 views

Is my Pico Hydro generator to battery setup correct? [closed]

Do I still need a voltage controller? *My water pressure is controllable. I am using this kind of generator. Thanks in advance!
0
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1answer
28 views

Feedback Control: Unexpected result for block diagram simplifications using matlab

I made some simple calculations regarding block diagram algebra. The problem is that I don't get the same result using matlab. Here is the system with it's corresponding blocks: $$H_1 = z+2$$ $$H_2 ...
2
votes
0answers
18 views

Need help with wiring [migrated]

I think I burned out one digital time switch and don't want to damage the replacement I bought. Can someone take a look at the diagram I drew and complete the wiring? The wiring diagram that came ...
1
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2answers
52 views

Why are there high active and low active signals in a timing diagram?

I always see such signals (colored in the image) in a timing diagram. Now I've figured out that they're called: low-activ and for me an OR-gate high-active for me an AND-gate signals. But why ...
2
votes
2answers
86 views

Does a switch schematic symbol have a conventional “polarity”?

I'm studying Rudy Severns eBook Snubber Circuits for Power Electronics; great read by the way. In it he has the following figure, notice the phrase in the caption "including voltage and polarity ...
3
votes
2answers
73 views

Why is this a Moore and not a Mealy FSM?

Can someone please explain how I can tell which FSM type I have? In my textbook I read that output in a Mealy FSM is based on both the input and the present state, but in a Moore FSM it is based only ...
5
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2answers
147 views

Drawing current sensing transformers accurately

This is more of a stylistic question than anything else, but it important that the sketch be accurate to convey what is really going on. I'm wondering, how does one draw a current loop that is ...
1
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0answers
41 views

Where am I going wrong with my datflow diagram?

I am trying to make a dataflow diagram of this: Here is what I have so far but it doesn't seem right: Where am I going wrong with my dataflow diagram?
1
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1answer
66 views

Signal Flow Diagram for a biquadratic section

I'm doing a theoretical preparation for an Electronics laboratory. This laboratory is about Tow-Thomas biquadratic section which can be represented by the following circuit: The first thing that is ...
1
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2answers
95 views

AND gate with a single input in a diagram

consider the following diagram: http://ee-classes.usc.edu/ee459/library/datasheets/DM74LS181.pdf ( page 3 ) The first AND gate at the top left of the schematic has only one input! What does this ...
0
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1answer
1k views

How do you calculate the total power developed in a circuit?

The figure below shows a circuit with 6 elements This table show the values for the currents and voltages in the circuit. While it's clear that you need to sum the power dissipated for a subset of ...
1
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0answers
55 views

Understanding timing diagrams + setting the Flash Wait States number in ARM

I'm trying to understand the Flash wait states which are configurable in my AT91SAM7X256. I have this basic project, and in the startup code the Flash Mode Register is set to provide 1 additional ...
0
votes
1answer
105 views

How to draw the input into the VCC net/bus in a circuit diagram?

I am currently drawing the circuit diagram for a device. To simplify the diagram I already using the ground symbol for all pins which are connected to ground. This makes the diagram much more ...
0
votes
2answers
213 views

Can a Magnet power a fan for a wind and electricity output?

can it really be possible to power a ceiling fan with the use of magnets and could give you a wind and electricity output? how to do it? (For Remote Areas Without Electricity).
0
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2answers
272 views

Proteus Circuit LED does not work

I am trying to build a double dice circuit. I tried one example I found from the web. But, I have problems with leds, and I am not very familiar with proteus. Could you please tell me why my LEDs ...
-3
votes
1answer
80 views

Circuit diagram of a household connection [closed]

Often, multiple electrical outlets within a given room are all part of the same circuit. So how would you draw an "equivalent circuit" for a four-walled room which has a single electrical outlet per ...
8
votes
3answers
672 views

V/I uppercase/lowercase convention?

Is there any standard in industry for using uppercase or lowercase for V and I in circuit diagrams? I ask this because my book seems to switch back and forth between the two without any rhyme or ...
2
votes
1answer
67 views

Is there a convention for lines separating areas in circuit diagrams?

I often see boxes of various styles to separate areas and increase clarity in circuit diagrams. I'm wondering if there is a line style convention in circuit diagrams for illustrating: A set of ...
4
votes
2answers
594 views

Electrical symbols, what does a dot before a triangle mean?

Good day. Trying to recreate a circuit, but I'm not sure what the dot BEFORE the triangle means. I know after it means invertor, does before just mean it's inverted BEFORE, instead of after? Rather ...
0
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2answers
1k views

How to set up load sensor in a full bridge with amplifier?

I I'm somewhat new to electronics so forgive me for what I don't know. I'm learning as I go along here. The overall project is I'm trying to make a scale connected to an arduino board that will ...
0
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2answers
62 views

Eye diagram measurement of a CLK using an Oscilliscope

I'm still a junior engineer and wondering how to perform eye diagram measurement of a CLK using an Oscilliscope? My second question: Is the eye diagrams just using to measure CLKs, or one may also ...
0
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1answer
62 views

Help me clarify this really unclear diagram?

5.2 Reduce control IC exposure 2a. Connect VS and COM as shown in Figure 6. http://www.irf.com/technical-info/appnotes/an-978.pdf (H-bridge application notes) Do they want me to connect ...
0
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1answer
77 views

I need help understanding how this stepper motor circuit works

This is my first time working with stepper motors. The motor in question is a Portescap 55M048D1B (source: http://www.digikey.com/product-detail/en/55M048D1B/403-1016-ND/417823). I am having trouble ...
0
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1answer
290 views

Ladder diagram, variation of Latch and Lock

I have a problem for expanding this particular ladder diagram. The cylinder is a double acting pneumatic cylinder type. START -> Start button A+ and B+ -> Cylinder moving forward A- and B- -> ...
0
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0answers
71 views

Making eye diagrams for binary signals

This should be relatively simple, but I'm just not understanding it. For a binary signaling of rate \$\frac{1}{T}\$, sketch the eye diagram when the following pulse shape \$p(t)\$ is applied and the ...
1
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1answer
157 views

Using a block diagram for the RS flipflop, add appropriate gates for a D-flipflop

I have been given the problem "Using a block diagram for the RS flipflop, add appropriate gates for a D-flipflop". Now, I can create the gate diagram for both RS flipflop and D flipflop ...
0
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1answer
431 views

State diagram for 2-bit parity generator

So the question I need help with is: Design a minimal moore state machine for a 2-bit parity generator that outputs ‘1’ if the number of 1s in a 2-bit sequence is odd, and outputs ‘0’ otherwise. ...
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votes
1answer
110 views

Trouble finding the input in this circuit diagram

Currently having trouble finding the input in my circuit diagram. I am assuming "z" is my output. As of now my input equations I have figured to be: Da = BC Db = CB' + BC' = C(+)B Dc = C'A' Z = ...
2
votes
1answer
175 views

One-Line Diagram Standardized Symbols Information

Good day, people. I'm trying to get into electrical substation design and I'd like to know which standard sets the rules for substation One-Line Diagram Symbols . Any ideas of where can I get that ...
0
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2answers
245 views

Bench power supply “Issues that rouse during build”

I'm building a power supply, based on this instructable and this one I am using 24volts DC power supply, 7+ amps circuit is based on LM338 / 7805 / 7812 Circuit is working although few things ...
7
votes
4answers
669 views

Can't figure out the general formula for electric circuit

I have the following setup. Note the device in the middle says P, not R, so I now how many Watts the device produces. (I'm not sure if I drew the correct symbol there) Calculating the current ...
0
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1answer
87 views

Depicting Analog Signal Paths graphically

Is there a 'standard' way to depict analog signal pathways / chains that's simple, concise, and not too mathematical? I've been searching online, but can't seem to figure out what such a diagram is ...
3
votes
2answers
117 views

What's these symbols style name/source?

I've found a lot of schematic diagrams that use this style of symbols, specially in the Wikipedia. I think these symbols are pretty clear and stylish. I would love to use them for the schematics I ...
0
votes
1answer
82 views

What does “zo <=500Ω” on the pin diagram means?

There is device (viewfinder). It has "Tally" LED. On the camera's output diagram, on the "Tally OUT Indicator" pin there is marking "zo <=500Ω". What does it mean? Should I supply + voltage on this ...
0
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0answers
84 views

Current/Torque - curve for an ASM

There is this exercise where I don't have a clue how to get the solution. It's about asynchronous machines, where with the help of field coordinates the string currents (istr) are split up into ...
0
votes
3answers
105 views

What does having the v in the center, with the positive near the top wire and negative near the bottom wire mean in this circuit diagram?

This is the diagram that I am asking about: I understand that the symbol on the left hand side of that middle branch is a current controlled current source, and the symbol on the right is a current ...
0
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3answers
343 views

How Do Batteries Behave In Series-Parallel (Verify)

Hi I am confused about How batteries behave in series and parallel. I read online and saw that as you stack more batteries in series, the voltage adds together and the mA's stay the same, and if you ...
1
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0answers
131 views

Wiring diagram and phase number of three phase transformer

Does anybody have an idea how to draw vector diagram of primary and secondary of a three phase transformer? For instance, if I need to draw vector diagram for Yzn5 diagram and then also draw the ...
0
votes
3answers
560 views

What's the reason for wiring a relay this way?

I came across the following automotive wiring diagram: One thing I don't quite understand is the way they wired the relay. I've got two main questions. It appears to me that they used the exact ...
0
votes
2answers
512 views

How to calculate address range of memory chips

Hi I am not an Electrical Engineer but need to know something about Memory address ranges. I need to calculate address range of each memory chip(62256) from let suppose bank 1 in below diagram. How ...
0
votes
1answer
70 views

ACS758KCB Wiring Diagram

I am using the ACS758KCB Hall Effect sensor for a project. On the front page of the Datasheet it list a .1uF capacitor between Vcc and GND, in addition it lists a capacitor, Cf, between GND and ...
0
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1answer
389 views

Undefined part of CSR8645 chip

I am trying to build a bluetooth audio headset and decided to use CSR8645 chip, but while trying to understand diagram of this chip i couldn't identify one part of it. I am uploading picture ...
1
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0answers
224 views

How does this circuit with three transistors work?

I don't understand how this circuit works. Its a clap switch circuit with transistors. I would appreciate if someone could explain how the current flows through the circuit and which transistor ...
2
votes
2answers
195 views

Need help identifying a strange symbol in a wiring diagram

I have this simple wiring diagram for an old tractor, and there are some symbols that look almost like diodes, but not quite. I have highlighted most of them in red in the attached image. Do these ...
1
vote
2answers
387 views

Capacitance - Voltage characteristic diagram in a Schottky diode

I 've searched the web for that diagram with no satisfactory result. Does a schottky diode has capacitance or not because of very tiny depletion (almost none) zone ?
1
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1answer
210 views

Are these H-Bridge circuits set up correctly?

I know I can use a driver chip to simplify this a lot, but I just want to make sure that I have the concept of H-Bridges down. Here they are: I have two motors, and each have 4 N-MOSFETs ...
0
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4answers
159 views

Did I do this circuit diagram correctly?

I just need some feedback on the circuit diagram I made (it's my first time): This is for a mini-car. There are two battery packs, one connected to an Arduino UNO, and the other connected to two ...
6
votes
4answers
3k views

Why is the capacitor short-circuited in this example?

Please forgive me if anything wrong in my question. I am a school student. I have following circuit diagram: simulate this circuit – Schematic created using CircuitLab There are three ...