Kapanadze and other FE discussion

[stivep]

stivep. dont u think your picture with coil is wrong?"" [size=0px]secret of Svobodian engine ( motor)3.jpg[/font][/size]""  in this pic it seems simple bifilar winding style.
guy in video from start mentions caduceus winding style .   
he also mentions in   video about solenoid coil style winding  and tells to wind one layer of coil one direction then u make new layer in other direction
and every layer changes direction and as i understood all these layers all are separate wires. after u finish winding these separate layers u must connect them   
so in the end it would look like caduceus coil (paralleled like your bifilar picture)

https://www.youtube.com/watch?v=A_Zd5L3WXCo&t=4s
However question to you  guys
what is the difference between CC  and CCW coil  winded  on the same former and  the same bifilar  winded  with  double  wire ?


Wesley

[stivep]

Hi  to everyone.
And what was this device?
part of the device Soviet-made.
His scheme.

https://www.allaboutcircuits.com/textbook/alternating-current/chpt-8/resonant-filters/
https://en.wikipedia.org/wiki/Voltage_divider
Wesley

[gyulasun]

Hi  to everyone.
And what was this device?
part of the device Soviet-made.
His scheme.

It is very likely a tunable low pass filter whose cut-off frequency can be varied by a DC control voltage connected to the series resistor 
input and the common ground rail.  With varying the DC voltage you can change the capacitance of the varicap diodes hence tune the filter. 
(The series resonant circuits help improve attenuation at further frequencies to be attenuated.)
Here you can see a band pass filter, also tunable by varicap diodes: http://www.amateurradioreceivers.net/blueltnbpf.htm   

Gyula

[stivep]

sinusoidal signal is delivered to C1 -
After C1 the LC1 shorts to the ground _{(in Notch filter fashion)}  one single frequency that must be eliminated by  filter.
However this LC1  has  its own  bandwidth so it is primary frequency and    some adjacent frequencies that will be cut.
The LC2 acts similar to LC1


The L1x and the last L.x a different coils.
-L1X   has 2 winds   
-L.x    has 4+ 2 with extended distance   (pitch) between the winds.( note that you have 21 coils  and only 20 diodes)
That last two winds pitch have been manually  adjusted  to resonance.
rule: the wider is the distance between winds the higher is its resonance frequency.
       If frequency of the rest of Lx coils  differs  from frequency of L.x coil than the bandwidth  of band pass  filter is set.
       If frequency of the rest of Lx coils  differs  from frequency of L.x coil   but it overlaps resonance boarder of L.x coil than  we  have nice clean  continuous widening of band pass filter.



L1x becomes  invisible at frequency  of its own  resonance as if was not there at all.
the same story is with rest of Lx coils

It is band pass filter where only positive impulses are allowed at the output.
The frequency of operation is in 200+MHz
C1 (2 capacitors  in green color) and Lx  coils determines bandwidth of band  pass  filter.

[stivep]

Widening of bandwidth of bandpass filter by overlapping
Wesley