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  1. Cincinnati10

    Creating an oscillating waveform.

    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...
  2. Cincinnati10

    Creating an oscillating waveform.

    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...
  3. Cincinnati10

    Creating an oscillating waveform.

    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...
  4. Cincinnati10

    Parameters for using 555 Timer

    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...
  5. Cincinnati10

    Parameters for using 555 Timer

    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...
  6. Cincinnati10

    Parameters for using 555 Timer

    "... 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?
  7. Cincinnati10

    Parameters for using 555 Timer

    "... I thought the 555 was a hero of the last century. There are plenty of better timer ICs today. " "What are the "better timers"?
  8. Cincinnati10

    Creating an oscillating waveform.

    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...
  9. Cincinnati10

    Parameters for using 555 Timer

    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...
  10. Cincinnati10

    Creating an oscillating waveform.

    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...
  11. Cincinnati10

    Creating an oscillating waveform.

    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...
  12. Cincinnati10

    Breakdown voltage between two parallel plates

    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...
  13. Cincinnati10

    Need Solid State Switch

    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.
  14. Cincinnati10

    Need Solid State Switch

    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...
  15. Cincinnati10

    How to Generate a FLuctuating Voltage

    My initial guess is 10-200V, at maybe 200 cycles per second at a fairly constant current in the range of 200-500mA.
  16. Cincinnati10

    How to Generate a FLuctuating Voltage

    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...

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