AH! So you have had to endure our government bureaucrats. Your bite was rather mild for that scenario.
I do not have a lot of money to throw at this project. But it's a personal idea and I have to pursue it for a while.
At this stage, I need to keep energy consumption low to prevent process...
VE1BLL — From your UserName, I'm guessing that you served our nation at some point in your career. I am always thankful for people who sacrificed their time for the freedoms we all enjoy. I also appreciate your taking time to consider my design challenge and your time in responding.
Since I...
I'm not sure what is confusing about my design parameters.
I want to create a positive voltage spike immediately followed by a negative voltage spike—Have a period of "rest", then repeat the cycle. I want relatively little power dissipated.
From time t=0 until the two voltage spikes are...
As far as I know, I cannot buy one.
If it will be difficult getting a chip or DAC to run this fast, how feasible is it to use maybe 4 channels each at 1/4 the frequency and doing a delay between them to get to the desired frequency?
In this scenario:
Channel No 1 would be creating pulse no...
Clarification on Signal Requirement:
I need an electrical signal that resembles the shape of a heartbeat pattern. I need it to carry 50-100W. I want to operate at 0V baseline. At t=0, I want to create a +5000V spike, and immediately drop it back to 0V, followed immediately by a -5000V spike...
"... I mean there are lots of timer-ICs, better than the 555"
Sorry. I mean, "What are the better timer IC's?" What would you use/recommend over the 555?
Clarification on Signal Requirement:
I need an electrical signal that is in the shape of a heartbeat pattern. I need it to carry 50-100W. I want to operate at 0V baseline. At t=0, I want to create a +5000V spike, and immediately drop it back to 0V, followed immediately by a -5000V spike...
Q1: — What is the frequency range I can get out of a 555 timer?
Q2: — Can I use a 555 with a positive ground system? IE: will it work as long as V at pin 1 is lower than V at pin 8? (If I connect pin 8 at 0 VDC and pin 1 at -12 VDC, will the waveform output be a negative voltage instead of a...
I'm hoping to go into production. So I will look at the micro approach.
This is a shoestring back yard project at the moment. Still R&D.
It's been 12 years since I've done automation/programming. Is there a code/language of choice for this sort of thing?
Do you know a good resource for...
I want to create a waveform that resembles a human heartbeat. (At this point I don't need the little "ticks" before and after the beat.) My idea was to start with a square wave and "process it" so that on the rising edge of the pulse, my voltage would rise to a positive voltage and then quickly...
Is there a source / formula that determines at what voltage a charge will jump the gap between two parallel plates that are brought sufficiently close to each other? Does plate material come into play? (316SS vs 304SS vs Hastelloy C)? What if the plates are submerged in an electrolyte vs in...
Can you give me a few sources for these that I may begin by looking at what is available?
12VDC, current range from 50mA to 20A. I want to be able to "tune in" a desired frequency of switching.
I want to pulse a DC Voltage signal. My idea is to install a solid state switch in the power circuit that will automatically cycle off/on at speeds up to 1.5 MHz or sowith a continuous duty cycle.
Are there switches like this available off the shelf? If the frequency/duty cycle is a...
Is there a device on the market that I can use to create a modulating voltage at low currents (100-500mA). I want to do this first on a bench, then from a DC voltage source.
I don't know the V-range, or the frequency I need. That will be determined from bench testing.
My initial thought was a...
