Akula0083 30 Watt Self Running Generator.

[TinselKoala]

Hey  TK
Congratulatios on new scope
do you manage to upgrade scope by program?
And change cooling fan? - how is result?

Thank you! It would never have happened without Chet (ramset) doing the legwork and gathering the donations from all the people who contributed, so I thank them all profusely.

Yes, I was able to upgrade the scope to 100 MHz and unlock the other options by using the keygen program as described in the EEVblog forum. But I removed (uninstalled) the upgrade and am now running completely "stock" at 50 MHz bandwidth with no upgrades. I will reinstall the unlocking key at some point... soon.

The fan is not nearly as noisy as I was led to believe. I have not installed the silent fan I ordered. I can't hear the scope's fan over all the other fans, air conditioner, etc running in my lab most of the time. The scope's fan does make a slight running noise but it's not bad at all.

[Pirate88179]

Thank you! It would never have happened without Chet (ramset) doing the legwork and gathering the donations from all the people who contributed, so I thank them all profusely.

Yes, I was able to upgrade the scope to 100 MHz and unlock the other options by using the keygen program as described in the EEVblog forum. But I removed (uninstalled) the upgrade and am now running completely "stock" at 50 MHz bandwidth with no upgrades. I will reinstall the unlocking key at some point... soon.

The fan is not nearly as noisy as I was led to believe. I have not installed the silent fan I ordered. I can't hear the scope's fan over all the other fans, air conditioner, etc running in my lab most of the time. The scope's fan does make a slight running noise but it's not bad at all.

Sometimes, a noisy fan is a good thing.  You can be alerted when it stops.  A few computers ago, I had a very noisy fan...used it for years...and one day...it occurred to me that the fan was suddenly quiet.  I shut down the computer and the fan was seized.  I replaced it and was somewhat dismayed that I could not hear the new fan, ha ha.  I was overclocking that computer a bit (to 4 gHz) so with no fan, it might have had a melt down.

Bill

[syedanas]

Any instruction in winding the core? Perhaps, someone could help me with some links.

[Bobby256]

Hi @ all,
pursuing this project anyone further?
I want to build this shematic in the afternoon.
Than i'll post my results.

greetz

[Bobby256]

here are my measurements.
I build it exactly as shematic, only the core is from an old monitor.
For the first measurements looking at the picture.
Then i'll have changed the diode from 1n4007 to a schottky BYV 10-40.
There ist no different between them if i look on the grafics.
I've also changed the capacitor from 220µF to 100 an 1000µF.
There are only very small changes at the voltage.
How can you get more than 400 kHz? The IC operating at max. 100 kHz (datasheet)
I've expanded the shematic at one more TP. This measurepoint is at minus at the schottky diode.
Here is a verygood DC voltage from 17 volts with a very small ripple.
My total current is round about 100 mA. The LED's are very brightly.

Greetz Bobby