4 Mhz Solid State Radiant Battery Charger

[nievesoliveras]

@pese

Do you have a schematic of what you are saying?

[Kator01]

Hi Folks,

dispite all different opinions/experiences etc. :

I have tested Dr. Stifflers circuit presented here by nievesoliveras (  the one with emitter connected directly to the ground) for days in different configurations... and I have to tell you : it works fine. I had experience for years with a similar oscillator I developed and up until now I could not figure out exactly why it worked.

Now especially the latest circuit with very low inductance ( 2 - 3 myHenry ) at the 470 pF to the base starts at very low supply-levels. I came down to 2.5 Volt and had a very good puls of about 40 to 50 Volts at the collector.

From a technically viewpoint of a well educated electronic professional this circuit seems strange but the main point here is that circuits which produce ( working in a non-linear mode) puls-trains like this are strictly forbidden ( holy sinus ) and must be avoided under any circumstances - for obvious reasons because the wide spectrum disturbes other communication-systems. ( Military doesnt care- they do what they want )

So I hope I could clarify this here for all to calm down. I have not tested the circuit of callanan - but I would suggest to use a 2N2222 with high hfe ( > 200 )  because the BD139 has a different base-emitter-capacity,  needs higher current to start working and is not suitable for a self starting oscillator but more apted for an amplifier.

@ nievesoliveras : do you have the means to measure the hfe of your BD139 ?

Now folks lets start all over again.

Regards

Kator01

[nievesoliveras]

@kator1

The only test equipment I have is one digital tester and one analog tester.
The digital is from cen tech model p30756.
The analog is from radio shack it is a small one and does not have model number.

[amigo]

fuck, must be a full moon today. Oh wait, it is...supermoon even...fine i'll grant that to everyone for their lack of cyber-mannerisms.

have we reached a new low on the OU forums with this thread, where people are singled out because of their language barrier and put into an inept category or something?

naturally I am not relying (or holding my breath) on Stefan Hartmann to do anything about it because he is as inept in running these forums as a moderator, as the rest of you who are slamming on basic human rights and privileges, of being treated with respect and dignity.

Dr. Stiffler, shame on you to belittle a person in a way you did because they do not speak English language as proficiently as you do.

regardless if you are from Zimbabwe or England, the quest is the same for all in here, this petty bickering leads nowhere and should be left for the street or the pub (or not even there) - go take a cold shower and come back...

[callanan]

Hi All,

Well having all these responses, good or bad, has at least made me think that there maybe some people out there willing to do some work for the benefit of all regardless if it is to prove that this circuit works or not in regard to charging batteries better than conventional charging methods. Keep it up and I will try to as well...

Regards,

Ossie