Questions tagged [synchronous]
200 questions
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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).
I have two micro-controllers (ATmega328) which…
Kevin
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Why aren't fully asynchronous circuits more prevalent?
From my understanding, most modern consumer CPU's are based on synchronous logic. Some high-speed applications (signal processing, etc.) use ansync logic for its higher speed.
However, in today's market, speed in consumer products is one of the…
Corsair64
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12
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Why do some microcontrollers have such huge synchronization delays?
On the Atmel SAM-D21 series microcontrollers, many peripherals use a clock which is asynchronous to the main CPU clock, and accesses to these peripherals must go through synchronization logic; on peripherals whose clock is slow relative to the CPU…
supercat
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Can wireless communciation be synchronous?
I understand that in synchronous communication, the sender and receiver need a common clock. Is it possible that wireless communication be synchronous? Can some common clocking element be there for such purpose?
h_r_kr_shn_n
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How can a synchronous motor have RPM other than 3000/3600?
It is said, that synchronous motor is rotating at the same speed as magnetic field rotates. But three-phase made magnetic field rotates as the frequency of current, i.e. 50 or 60 times per second, which means 3000 or 3600 RPM.
How can synchronous…
Dims
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Can a 50 Hz, 220 VAC transformer work on 40 Hz, 180VAC?
I am designing an AC to DC converter. My power source is a single phase synchronous alternator that has a voltage range of 170~260 VAC and a frequency of 40~60 Hz. Can i use a transformer designed on 50 Hz and 220 VAC to work on my alternator specs…
Mahmoud T. Abuzayed
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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 motor to the mains (220V 50Hz). The results was a…
harm
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3 answers
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 place transients at falling clock edges, that way…
Gyorgy Szekely
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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 is a very strong tendency toward the use of…
supercat
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Are electrical clocks influenced by vibration?
There are many different electrical clocks for generating pulses with constant frequency (e.g. RC oscillators, crystals, OCXOs, MEMS oscillators, chip-scale atomic clocks).
If they are mounted on a vibrating device (e.g. an electrical motor of a car…
Alejandro
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5
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What's the point of a MOSFET in a synchronous buck converter?
I can't seem to understand the point of the second MOSFET in a synchronous buck converter. The second (Q2) MOSFET has a body diode which seems to act like a normal diode in an asynchronous buck converter and when the MOSFET is conducting there is no…
littleMak
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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 frequency.
Then why are there so many measures…
krandiash
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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 same time, so I cannot use those timestamps to…
Maestro
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Synchronous Counter to go through sequence 1,2,5,6,3,4,7,0
I have been working on a question which is:
Design a synchronous up-counter that goes through the sequence 1 2 5 6 3 4 7 0 and then repeats. Implement the counter using D flip-flops.
So Far I have the managed to work out the following:
Is this…
user3472448
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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 prevent the body diode from conducting, and so it…
mik
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