Dr Ronald Stiffler SEC technology

[SkyWatcher123]

Hi all, Hi erfandl, yes, the 2n3906 seems to work good,also 2n2907 and 2n4403 works good also.

I notice the pn4248 does not have the same gain and i can see that first hand with my setup,
as i found another one in my salvage stash.

I'm testing two 2n3906's in parallel at the moment.
peace love light

[Lidmotor]

All--- I went ahead and ordered one of those $50 function generators like what Dr. Jones fried attempting to replicate the Dr. Stiffler latest experiments.  Building up a signal generator specific to this project isn't going to work for me.  My hope is that I can isolate the function generator to prevent the failure Dr. Jones had.  I will probably use this tool for many other projects -- if I can keep it alive.  If it doesn't do anything for this particular project so be it.  If I kill it the cost was not much.
  Here is the unit I bought off EBay.  It ships for free from a California source where I live.
https://www.ebay.com/itm/FY3200S-24MHz-DDS-Dual-channel-Arbitrary-Function-Signal-Generator-LCD-Display/401351848279?epid=1685917492&hash=item5d726f3157:g:k3UAAOSw6YtZSyGA

 

[Slider2732]

Lidmotor - very nice, you've been missing one of those !
It has the 20Vpp and also the measurement function is intriguing.
What's a Symplectic Pulse ?   

Oh and it has this line in the ad:
"Protection    All signals output can work above 60s under the condition of load short circuit"


HiLetgo are sending another AD9850, so all's good on that front.

[Lidmotor]

Slider---- This should be fun to see if I can get this function generator to at least do what those little crystal oscillators I have do.  As you and I know the 'Exciters' energize the whole area around the device so trying to isolate and protect this generator might be tricky.  The crystal oscillators tolerated it just fine so I am wondering what went wrong with the Dr. Jones experiment.
  I have no idea what a Symplectic signal is.  I tried looking it up but got confusing answers from Google.  Perhaps I'm too symple minded? Ha.
  I hope you get your AD9850 eventually running.  Had you gotten your project instantly working I might have gone that direction.

---Lidmotor

[Slider2732]

Instantly working for some projects is about the same as "I'll just print out this PDF and be right with you". There's usually a niggle of something.
There may be a need to protect the return path of the output signal with something like an optical isolator. Am not sure of the speed they max out at, but can be as simple as an I/R LED and detector inside a black straw. Another route may be to use a transistor as a high speed switch, such that only it blows if anything odd happens.