The tag has no wiki summary.

learn more… | top users | synonyms

1
vote
1answer
71 views

Genlock two OV5642 camera modules on Arduino with ArduCam

I need to shoot stereo video or stills at about 10 FPS possibly in perfect sync. My plan is to set up a 3D stereo rig (2 standalone units - each consisting of Arduino UNO + ArduCam shield + OV5642 ...
0
votes
0answers
41 views

Triple Axis Accelerometer Breakout - ADXL335 synchronise

I have three ADXL335 Triple Axis Accelerometer Breakout boards. I wish to measure the the acceleration of a human leg as it walks at three points (hip knee and ankle). I want this to log this data in ...
2
votes
3answers
56 views

Anyone have specific examples of how IEEE 1588 is most commonly used in industry?

I've run into the concept of IEEE 1588 synchronization over Ethernet several times, and am curious what its most common uses are and the details of why it is required. For example, I read that cell ...
0
votes
3answers
95 views

Regarding a statement given in my 'Electrical Machines' textbook about synchronous machines?

I was reading the introductory chapter of my textbook on machines and when the author comes to a little introduction on synchronous machines, I was stuck on a statement midway. It goes: "When ...
-1
votes
2answers
68 views

Analyzing clock oscillator using timing diagram

In a recent examination a friend of mine was asked to analyze and find the frequency of oscillation of a clock oscillator using timing diagram as shown below: Can someone give me directions as how ...
1
vote
3answers
128 views

Meaning of “with respect to rotor and stator”

In the following example, when it says “with respect to stator” and “with respect to rotor”, did they mean the rotor part of the synchronous generator in both cases? Example: The excitation field in ...
3
votes
2answers
118 views

Clock Deskewing and flip flops

I have a question in my text book that I do not quite understand. I was wondering if someone could please explain what the question means? Such as, what is a deskewed flip flop. How would one find the ...
0
votes
0answers
51 views

Where can I find synchronous machine parameters to use in a PSCAD simulation?

I am trying to observe a loss of field on synchronous motors of different types and sizes. PSCAD seems to want a DQ equivalent circuit. I've Googled the problem and tried several manufacturers' ...
2
votes
2answers
172 views

synchronous buck ls-FET switching losses and dead time minimization

I'm designing a Synchronous buck converter. I'm having doubts regarding the following: In the rectifying period of the converter, using a Schottky diode in parallel with the low side MOSFET will ...
1
vote
1answer
87 views

Choosing Altera Quartus II clock rate for stopper

I'm using Altera Quartus II to built a stopper. I'm using 2 counters and I need to choose the right clock rate to get pulse every 1 sec. There are only two options in Quartus for the clock: 27Mhz and ...
1
vote
3answers
294 views

How to perform a synchronous output on the Arduino?

I have a device I'm trying to control with the Arduino. It works like this. Arduino sets and holds 'ready line' to 5V high. Device sees ready line high and sends 16 clock pulses for two bytes of ...
1
vote
2answers
117 views

How is a synchronous 214 rpm motor for a 50 Hz mains possible?

According to Wikipedia at steady state, [...] the rotation period is exactly equal to an integral number of AC cycles. Now I have a brief description of a three-phase motor designed for 50 Hz AC mains ...
0
votes
1answer
157 views

Sequential Circuit Diagram: D Flip-Flop

Sequential Circuit Diagram: D Flip-Flop Answer Key ...
4
votes
1answer
151 views

Can a synchronous regulator “chirp” in burst mode?

I'm looking at (the millions of) buck regulators available for a project where the board will be a host board for a Gumstix Dual Cortex A9. This can pull quite a bit of current at maximum so I was ...
22
votes
3answers
2k views

How to synchronize two microcontrollers to micro-second accuracy?

I need to synchronize two micro-controllers so that they can measure the speed of propagating waves. The time delay measurements need have microsecond accuracy (error less that 1/2 of a microsecond). ...
2
votes
2answers
80 views

How electronic components keep synchronized?

So, voltage travels super fast right? Still, there has to be some lag between voltage traveling from one transistor into another. How is a circuit kept synchronized then?
1
vote
2answers
149 views

Why do displays with auto-synchronization function get out of sync? (pixels blur) [closed]

I'd like to know why LCD displays that have the "Auto" button need it in the first place. Are they losing sync with the signal because of some special feature or all LCD displays really suffer from ...
4
votes
2answers
462 views

Clock skew? Good or bad?

So, I've been reading up on clock skew. I came across the fact that clock skew can be incredibly useful, in the sense that positive skew can be used to speed up the circuit by increasing the clock's ...
1
vote
2answers
1k views

Design a 4-bit synchronous counter using D filp-flops and 16 x 4 ROM that can generated any arbitrary counting sequence

What are the restrictions on the counting sequence? Give the ROM contents for the following sequences: a) 12, 13, 14, 15, 5, 6, 7, 0, 1, 2, 3, 4, 11, 10, 9, 8, 12, 13, etc... b)8, 9, 0, 1, 8, 9, ...
2
votes
1answer
180 views

Regulating a small clockwork synchronous AC motor

Is it possible to drive a small synchronous motor with permanent magnetized rotor to other speeds it is designed for? I tried to drive a small clockwork AC motor which is symmetrically build but ...
5
votes
3answers
357 views

Sync video with data

When I have a datalogger and I want to sync a video-file to the recording, what would be an easy method? The logger and the camera both have an internal clock, but they may not be set exactly to the ...
4
votes
1answer
339 views

Synchronous motor mystery

Not too long ago I acquired an old ('70/'80) German flip clock. I found out that this clock is driven by a one-phase synchronous engine. I can't get the motor to run. I (carefully!) connected the ...
2
votes
2answers
2k views

Syncing Signals with Global Clocks in FPGAs/CPLDs and Edge Detection

I am a newbie in digital logic design and I'm trying to get my head around syncing external signals to the global clock in an FPGA. For example, the SCK signal/clock fed to an FPGA by the SPI Master. ...
2
votes
1answer
692 views

How to implement a synchronization signal with AVR (attiny45)?

In pseudocode I want to do following: ...
4
votes
3answers
534 views

Timing inside a shift register

How I imagine synchronous digital networks work: data lines are sampled at rising clock edge, a set of transients occur, system settles, and data lines are sampled again on next rising edge. I would ...
3
votes
1answer
2k views

Ripple counters versus synchronous--pros, cons, and power consumption

Substantial edit--note that David Kessner's answer was written in response to the original posting; view the edit history to see what he was responding to From what I've read of digital design, there ...