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

learn more… | top users | synonyms

0
votes
0answers
22 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
45 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
67 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
votes
2answers
71 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
59 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 ...
7
votes
3answers
515 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
64 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
310 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
votes
2answers
337 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
votes
2answers
46 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
votes
1answer
58 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
votes
1answer
41 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
votes
1answer
118 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
votes
0answers
65 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 ...
0
votes
0answers
100 views

Need help creating electric shocker

I'm trying to make an electric shocker (prank buzzer, taser, whatever you'd like to call it) for a Physics project from a disposable camera. The one we're using is a Fujifilm Quicksnap, since we found ...
1
vote
1answer
76 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
votes
1answer
190 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. ...
-1
votes
1answer
103 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
130 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
votes
2answers
147 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
561 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
votes
1answer
75 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
82 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
73 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 ...
1
vote
0answers
76 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
68 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
votes
3answers
167 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
vote
0answers
95 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
313 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
273 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
0answers
107 views

Constellation Diagrams of Codes

I am suppose to draw constellation diagrams of these signals: They are unipolar codes such as Unipolar and Bipolar NRZ code, Unipolar and Bipolar RZ and Manchester code. I am pretty new at this. ...
0
votes
1answer
67 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
votes
1answer
236 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 ...
0
votes
0answers
159 views

Applying euler path to CMOS schematic with inverter

I've discovered that tracing the Euler path of a CMOS schematic can aid in creating compact stick diagrams. I have an issue, though. Of all the lectures I've read on the net, the pull-up and ...
1
vote
0answers
180 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
157 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 ...
0
votes
2answers
253 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
vote
1answer
204 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
votes
4answers
153 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
2k 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 ...
0
votes
1answer
203 views

Drum machine circuit diagram

I'm having trouble understanding this circuit. Can someone help me get through it? I'm trying to understand what the signal is doing from start to end but keep running into electrical deadlocks.
5
votes
2answers
255 views

Diagram symbol I've never seen

So my buddy brought me his Kawasaki Ninja service manual and asked me what this symbol is - sort of looks like part of a diode with a box instead of a line and is half shaded. I've tried looking it up ...
3
votes
4answers
195 views

How to read this basic schematic?

I need to build a circuit where light is converted to sound. The light falls on a CDS cell and the current is passed through the NPN transistor to amplify it. I know this is a very simple ...
0
votes
0answers
261 views

3.5mm to 3.5mm female mount wiring

I am trying to make a detachable mic mod similar to this: Full Description I have done everything in the pictures but something in the wiring is wrong or I have the wrong cables eg: the mic ...
-2
votes
2answers
246 views

Drawing a diagram of a one-bit adder [closed]

How can I draw a diagram of the one-bit adder (full, including the transfer) built with the smallest possible number of logic gates?
1
vote
2answers
327 views

How to complete circuit diagram?

I have limited knowledge on electrics and wanted to ask how I can complete this circuit, how would I go about wiring it up? Bulb should ONLY be ON when Input A is ON and Input B is OFF. Bulb should ...
1
vote
0answers
244 views

Question about vending machine circuit

I have this assignment I finished for a vending machine circuit. Just as some background, there are three inputs for nickels, dimes and a return option. The return option is for only one nickel/dime ...
0
votes
1answer
429 views

Output voltage diagram of a 3-input OR logic gate (using diodes)

Let's say we have a 3-input OR gate (using 3 diodes and a resistor) as follows: A hypothetical input voltages diagram is the following: I want to find the output voltage diagram (voltage Vo) that ...
0
votes
2answers
137 views

Timing Diagram question

Can anyone check my timing diagram for me? I have my exam tomorrow and just want to make sure I am understanding these correctly: Any feedback is appreciated. Thanks in advance
1
vote
1answer
357 views

Is the DESIGN of an MPPT Solar charger SUPPORTING combination with regular battery charger on the LOAD side? [closed]

I just got my "LCD 30A MPPT Solar Panel regulator" for my caravan, but connecting it raised an issue. It looks like this: ...