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Thanks for the reply. I guess you are saying that there isn't any cheap and simple LED driver out there. Or, at least, you don't know of one. But I seem to have heard the words "LED driver" somewhere. What does that mean? Are they just for high power LEDs?
I know that this is a rather trivial...
I am designing a control circuit that uses 24VAC for the controls, ultimately switching 115VAC On and Off. In adding the bells and whistles, I want a couple of LEDs that indicate the ON condition and a safety condition. Both would be illuminated by the presence of that 24VAC control Voltage. I...
An article for a constant Voltage power supply in the latest issue of Nuts & Volts magazine shows that the commercial module that the author uses has two 2.5V zeener diodes in parallel. They are in series with a 2.2K resistor which connects to the output of a 78L05 regulator chip. This...
Radians are a natural measure of angle and is defined as circumference / radius. Hence the units for Radians are distance / distance which reduces to a pure, dimensionless number.
So when you say that "the corner frequency 1/(RC) has dimensions of radians/seconds" you are really saying that...
Some good help here. Thanks to all.
OK, I am coming to understand a bit about CCM. I still have a bit of trouble translating the current in the inductor to the Voltage and current at the output, after filtering. But I am reading all I can about switchers.
You mention synchronous below. That...
I am doing a design for a supply that will feature switchable output Voltages in the range of 2 to 14 Volts. This switching would be accomplished with power on and load connected. Load current from 0 to 1 or 2 Amps. My preliminary plan is to design the feedback divider for the lowest desired...
Two suggestions:
First, in your original schematic move the LED and R2 to the collector circuit instead of the emitter circuit. The emitter goes directly to ground. This way the output of the microcontroller chip does not have to overcome the Voltage drops of the LED and R2 and the additional...
"Case" usually refers to the box or enclosure that the circuit is housed in. In most countries, this would be connected to the safety ground in the building's electric service. Often the case ground and the circuit ground are the same thing. But sometimes that case has a separate ground...
Jeffrey,
I think you are missing the point of my use of the word "model". I am saying that ANY description of a real world phenomenon is a model. If you are talking about a rough analogy, like the water-electricity comparison or a seemingly rock solid theory, like Newton and gravity, or just...
I brought the word "model" into the discussion to try to bring a new way of viewing the topic to some of the people discussing it here. My background includes a fair amount of reading on the philosophy of science in addition to scientific and engineering training. I like to think that it is...
OK, you seem to take delight in taking my answers apart so why not another round. I am not really trying to argue, but just present another viewpoint. And I rechecked all your responses and did not see any "real world" example of a duplex or complex number. Did I miss something?
They are...
Ratch,
You are limiting your thinking too much. And you are trying too hard to find a real world existence for these numbers.
I am using the word "model" in a very general sense. I have built scale models. I know about clothing models. And there are computer models. There are many...
I didn't make any claims that using the earth's field as a standard was a particularly good idea. It definitely isn't. But you must remember that technology does have a history.
So, in the year 18xx (+/-) when this was invented, perhaps it was the best option. Or at least one physicist...
Perhaps I am a "newbie" in this area. That is why I am asking about it. "representing a signal in te form of math notation that is it"? I am sorry, but that makes no sense to me.
Still none of what you are saying has told me what the vertical axis actually represents in the original...
And this explains what?
So, exactly what does the vertical axis show in this graph? I can't help but wonder if the real problem here is just muddy thinking as illustrated by this axis label.
I mean, looking back to the original question, the graph shown DOES show x as a function of t or...
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