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Author Topic: Digital Circuit Diagrams+FETs+Drivers  (Read 23404 times)

Offline Earl

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Fastest, narrowest, and simplest pulser_newest version
« Reply #15 on: July 27, 2007, 08:56:40 PM »
Hi All,

made some improvements to the circuit.

Earl

Free Energy | searching for free energy and discussing free energy


Offline tao

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Re: Fastest, narrowest, and simplest pulser_newest version
« Reply #16 on: July 27, 2007, 09:08:35 PM »
Hi All,

made some improvements to the circuit.

Earl


The only thing faster than that thing is Billy the Kid :P...

Nice work Earl.

This might work real good for this device, called the 'Easy Free Energy Device': http://www.overunity.com/index.php/topic,2778.0.html

Simple calculation courtesy of Google: (the speed of light * 10 nanoseconds) = 2.99792458 meters

Guess that is where Earl got his ''minimum length" of 3m from ;).

Just remember that value, when reading about the above mentioned thread/device...
« Last Edit: July 27, 2007, 11:41:44 PM by tao »

Offline Earl

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Fastest, narrowest, and simplest pulser_v2.2
« Reply #17 on: July 28, 2007, 01:36:24 PM »
Hi All,

here is the latest version.

Enjoy.

Earl

Free Energy | searching for free energy and discussing free energy

Fastest, narrowest, and simplest pulser_v2.2
« Reply #17 on: July 28, 2007, 01:36:24 PM »
Sponsored links:




Offline Earl

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TPU + COILS CALCULATOR by EARL
« Reply #18 on: July 28, 2007, 02:27:00 PM »
Hi All,

here is a little TPU + COILS Calculator.

Enjoy.

Earl

Offline Super God

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Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #19 on: July 28, 2007, 06:20:55 PM »
What is the clock speed for the 10ns pulser?

Free Energy | searching for free energy and discussing free energy

Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #19 on: July 28, 2007, 06:20:55 PM »
Sponsored links:




Offline Earl

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74HC74 Clock speed? - answered
« Reply #20 on: July 29, 2007, 08:52:44 AM »
74HC74
According to a Fairchild datasheet from 1983 at 5V the guaranteed speed is 30 MHz and typical clock speed is 72 MHz.  At 6V supply voltage the figures would be higher.

A Philips datasheet from 1994 says at 4.5V supply the guaranteed minimum is 30 MHz and typical is 69 MHz.
At 6V, guaranteed is 35 MHz and typical is 82 MHz.

Above is at 25 degrees C; higher temps give lower speeds and lower temps give higher speeds.

ATTENTION

The 74AC74 or 74ACT74 have Fairchild specs of
at 5V Vdd of guaranteed minimum clock of 140 MHz, typical 160 MHz.  At 6V, this would be a little faster.

These parts would give pulses of about 3 nsec width., maybe at 6V with very careful layout and by-passing it would be possible to achieve 2 nsec pulse width.

For testing of a 74AC74 circuit, you will need AS A MINIMUM:

An oscilloscope with 300 MHz analog bandwidth
A scope probe rated for 500 MHz bandwidth

Regards, Earl


What is the clock speed for the 10ns pulser?

Offline MeggerMan

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Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #21 on: March 31, 2008, 02:14:09 PM »
.
« Last Edit: March 31, 2008, 11:34:01 PM by MeggerMan »

Free Energy | searching for free energy and discussing free energy

Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #21 on: March 31, 2008, 02:14:09 PM »
Sponsored links:




turbo

  • Guest
Re: Fastet, narrowest pulser possible
« Reply #22 on: March 31, 2008, 08:58:50 PM »
Hi All,

You will have difficulty building a faster or narrower pulser than this.


Are you sure ?  ::)


Offline MeggerMan

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Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #23 on: March 31, 2008, 11:30:51 PM »
Earl,

OK it works now (wires were not joined), when I see it running I can see how simple it is, 3 chips (2 x dual D flip-flops,1 x 4 input NOR) and thats it!

(http://i100.photobucket.com/albums/m25/kingrs/rat_racex4.jpg)

I have attached the file if anyone wants to try it.
See
http://www.falstad.com/circuit/

Regards
Rob

Free Energy | searching for free energy and discussing free energy

Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #23 on: March 31, 2008, 11:30:51 PM »
3D Solar Panels

Offline MACEDONIA CD

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Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #24 on: April 01, 2008, 12:03:52 AM »
HI


IS GOOD TO BE FAST BUT  WHIT SINUS FREKFENCY  NOT LIKE THAT                                                                                                                  .........................<<SINUS FREK.  >>IS FREKFENCY    PULSE IS NOT ...... THE PULSE   HAVE TO MANY  HARMONICIS  THE HARMONICS  NOT GIVE PROPERTLY MOVING  ELKTROMAGNET FILD.. IF  WE BE CREATED  SIMPLE  ELKTROMAGNET FILD AND MOVING PROPERLY  MAKEING  FAST TURNS <<THEN  YOU HAVE   LIKE  YOU HAVE  SMALL MAGNET  MAKEING   FAST TURNS  CLOUSE    HMMMMMM

orbs

  • Guest
Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #25 on: April 03, 2008, 10:15:10 PM »
As far as sine wave output, if that was desired, remember unidirectional concept.  The actual
output can easily tuned to emulate a perfect sine.

Sometimes it can even be easier to generate square waves from sine waves, which might seem strange at first. A DDS (Direct Digital Synthesizer) generates a sine wave approximation using very fast D/A converters. This approach allows to generate very finely tuned output signals with accuracy of fractions of Hz, and errors and drifts can be corrected digitally. The signal is then low-pass filtered to get a smooth sine wave. Putting this through a good comparator can then yield a square wave signal with almost perfect 50% duty cycle (because the used sine signal was perfectly symmetric). While such a DDS is more complex, most of it can be put on a single chip, and calibration and selection of the good chips is done at the factory and you don't have to do it yourself (but obviously you pay for it).

An example is the AD9912 mentioned in the other thread.
« Last Edit: April 30, 2008, 10:49:25 PM by orbs »

Free Energy | searching for free energy and discussing free energy

Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #25 on: April 03, 2008, 10:15:10 PM »
3D Solar Panels

Offline MeggerMan

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Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #26 on: April 04, 2008, 12:00:26 AM »
@Orbs,
There is a whole thread on the DDS 20 kit from ELV in Germany. Cost is about 42 GBP/ 80 USD for the kit which is easy to build - only the big through hole components to add.
I translated most of the manual to English with my own interpretation of the workings of the DDS 20 based around the AD9835 chip.
 http://www.overunity.com/index.php/topic,2650.msg38239.html#msg38239

I am currently working on a -5V inverter circuit to piggy back on the back of the DDS 20 board.

As soon as I have finished decorating the front room I'll finish it off (V1.1). (I promised Roberto 1 board and Ward 4 boards + 4  cases).
(http://i100.photobucket.com/albums/m25/kingrs/inverter_layoutv1-1.jpg)

Here is V1.0 + circuit (I have not got a photo of V1.1).
(http://i100.photobucket.com/albums/m25/kingrs/inverter_built_v1.jpg)
(http://i100.photobucket.com/albums/m25/kingrs/inverter_schematic_v1-0.jpg)

Here's the DDS 20 squeased into a small ali case:
(http://i100.photobucket.com/albums/m25/kingrs/DDS20_case_DC_socket.jpg)

The kit contains this:
(http://i100.photobucket.com/albums/m25/kingrs/dds20_kit.jpg)

The only down side with this is the LCD display segments do not always show but you can sort this by using a neoprene bezel inside the case pushing the LCD display onto the PCB.

Regards
Rob

Offline Feynman

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Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #27 on: April 04, 2008, 12:04:26 AM »
Wow, great thread!  I really like the ideas of shift registers, dividers, and flip-flops for frequency synthesis.

@MeggerMan
Regarding this latest post, are they still not shipping these kits to USA?  I'd be interested in getting one. . .

Offline MeggerMan

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Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #28 on: April 04, 2008, 12:18:21 AM »
@Feynman
What I did for Ward was he sent me the money, I ordered the kits (6 of them) to the UK, I built the boards and posted them to the USA.
On one of the boards I found a fault with a tiny solder ball bridge on AD9835 that I found with my microscope, once I removed, it worked fine.

Jason is working on board with 3 x DDS chips, phase shift for each DDS, pulse duration control, opto isolation, MOSFET driver - in effect the works.
I think he's driving it with a PIC Stamp using basic.

I have most of the parts to build the AD9959 quad channel DDS, plus the low jitter 125MHz SAW oscillator.
BUT....its a big project, make no mistake and needs some complex PIC programming to pull it all together.

Soldering the AD9959 is the tricky bit, the chip is 8mm square, 56 pins, 0.56mm pin pitch.
(http://i100.photobucket.com/albums/m25/kingrs/DS1023-100_AD9959.jpg)
I was considering buying some cheaper chips with a similar pin count and trying my PCB oven with different ideas.
 
Regards
Rob

orbs

  • Guest
Re: Digital Circuit Diagrams+FETs+Drivers
« Reply #29 on: April 04, 2008, 01:44:53 AM »
There is a whole thread on the DDS 20 kit from ELV in Germany.

Thanks -- pretty cool stuff! Well, the AD9912 I mentioned is in a slightly different category (up to 400 MHz, jitter in pico-second range, etc.), more expensive and more difficult to solder. It's also pretty new, so no kits available yet. Possibly overkill for SM's design (compared to spherics' one).

 

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