3v OU Flashlight

[avalon]

One more thing that I forgot to mention is that during the resonant peak both halves of the core are attracted to each other with such force that it is simply impossible to separate them with one hand. The force is similar to a pair of my 1 inch neodymium magnets.
Once the frequency is off so goes the attraction.

~A

[d3x0r]

I do no know for sure what I have found, but my 3v flashlight V2.0 went crazy.
~A

coils reosnance calculator - LCT

http://www.1728.org/resfreq.htm




if we take the time (frequency) of 115200Hz and 53mH; the capacitance would be 36pF; looks like the capacitance of a scope probe.


What was suggested in the circuit is something like 1000uF -2200uF ... which would be a frequency of more like (at 1000uf, 53mH;  21.82  Hertz  so....


that puts it in the realm of wall power; if used more like 132uf 53mH is     60.059   Hertz....

[semenihin-77]

One more thing that I forgot to mention is that during the resonant peak both halves of the core are attracted to each other with such force that it is simply impossible to separate them with one hand. The force is similar to a pair of my 1 inch neodymium magnets.
Once the frequency is off so goes the attraction.

~A

это главное!

[lost_bro]

One more thing that I forgot to mention is that during the resonant peak both halves of the core are attracted to each other with such force that it is simply impossible to separate them with one hand. The force is similar to a pair of my 1 inch neodymium magnets.
Once the frequency is off so goes the attraction.

~A

Good day Avalon

Do you know the Ferrite Grade/number?

You mentioned that having 3 seemingly identical pot cores, only one will respond in this manner.....  must be different ferrite material?

take care, peace
lost_bro

[avalon]

Do you know the Ferrite Grade/number?

All 3 cores are the same (supposedly) and came from the same source.
Here is the datasheet...

~A