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You don't say what your levels are so there are various answers.
At the simplest a pair of anti parallel diodes connected to ground and a resistor to your 60Hz signal, will give you an aproximation to a square wave at around +-0.7v with silicon signal diodes (1N4148 etc). A variation on this is...
Marce,
You have raised an issue with my comment that the signal "follows the path of least resistance" I put the expression in double quotes to indicate that it was being used in the common human sense, not the specific electrical sense. I further confirmed this by asking the quaetion what...
Just as a secondary note.
Some 7805's will oscillate at 50MHz, depending on the equipment you may not notice this.
It takes very little to set them off if you do not decouple them well and watch out if you have an kind of "protection" circuit around them such as resistors or diodes that are...
Jiripolivka,
I mentioned upconverting a noise source which can be done by beating an oscilator with your hot/cold nois source.
I further mentioned that there might be a need to calibrate it which is what the NISt paper is partly about (and the reason I remember the 1801 paper is the number is...
Don't think in absolute volts with an assumed zero crossing point.
Think in terms of change of flux which will be the same positive as it will negative.
Or to put it another way, in old valve radios they had transformers with +/-20V of AC signal sitting on around 200V DC, the output of the...
A simple answer is to replace the relay with a multiple contact relay with normaly open and normaly closed contacts.
If you arange for the relay coil to be powered via the relay contacts and a momentary push button to reset it then it will stay in the active state.
That is let us assume the...
You may have to roll your own.
Have you thought about "upconverting" an existing noise source through a mixer?
You will possibly need to calibrate it NIST has published some work for this area,
https://tf.nist.gov/general/pdf/1801.pdf
How do you expect the auxiliary coil to pick up the DC component of the primary winding without actually being attached to it?
Bearing in mind that a current is not generated in a wire by a static field only a dynamic field.
You might see some symmetry if the BH curve of the core had been...
Ivan,
Just to clear one thing up the PWM is not being used to control the LED current but the ON/OFF ratio to control the apparent brightness?
Also rather than use a mosfet, why not use a mosfet gate driver, some of them will quite happily dump 6amp continuously with a very very low on...
Guy,
The answer to both high frequency and low frequency is "it follows the path of least resistance".
The question then remains what is "resistance" to the current.
From the DC perspective you could divide any conductor into domains and work out what it' DC resistance is and then calculate...
The old fashioned way to do this was a "chopper stabalised charger".
Very simply you connected the generator output to a capacitor via a transistor switch (often PNP) in series with a small value of resistor. Effectivly the transistor was controled by an opamp and a fixed voltage refrence. So...
There are several types of "executable format" Linux can support
The oldest is "a.out" (this is long beard and sandal Unix format)
If the program is not self contained (ie it needs library code) then the normal format is ELF.
However Linux will also load and run self contained image files (it...
Ivan,
I'm a little confused as to what you are trying to do.
If I understand you correctly you want to vary the percieved brightness of the LED strips by a PWM?
However you want to set the current available to the LED strips via another device that only has a current capability upto a few...
oahsen,
There are numerous ways you can do it with a triggerable signal generator.
The first choice is analog or digital.
As others have noted the analog methods have some (but not insermountable) problems.
Have you considered generating a digital trigger that is in phase quadrature?
It can...
Shadow-cuk,
The diagram at the top is the idealised form where the signals flowing between the blocks are nebulous and not defined, they could be serial data parrellel data or some combination of both it does not matter as it is not relevant to the functioning.
However the second diagram is...
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