Muller Dynamo

[DeepCut]

Marius/Chal et al, this is sounding really interesting.

Marius is that the soundcard scope software you are using, looks like the same one i have ?

I've spent £90 on wire in the past 2 weeks testing different coils with my diametric setup.

I've definitely confirmed that higher impedance coils amplify the Heins effect, but it's looking like it may take a lot of wire for the effect to overcome the drag of the core. Now i understand why Thane has such big, fat coils, i'm thinking it may take 2 pounds of 0.4mm wire for a coil to do that on my setup.

I'm writing a program to tell me how much wire of a certain gauge i will need to achieve a certain inductance, it should be finished by tomorrow.

One drawback of a single-magnet setup is that there is always core drag, it's not like the even/odd setup where there is only one core dragging at a time, with my setup, each additional gen coil introduces more drag which is why i have to make a coil that overcomes the drag once the effect has kicked in.

[mariuscivic]

Hi DeepCut

This is the program that i'm using: soundcard oszilloscope.
I made other 2 coils tonight (800 turns 0.4mm 20mm/8mm ferite); i'm running out of wire 

[Dave45]

 

[DeepCut]

Hi Marius, yes that's the one i am using

This is a good probe for it :

http://www.ladyada.net/library/equipt/diyaudioprobe.html

I've made so many coils i've run out of money !

I plan to buy this :

http://www.ebay.co.uk/itm/DSO5200-200MS-s-PC-USB-Digital-Storage-Oscilloscope-2CH-/280743490028?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item415d9db1ec

[wings]

FREE program for sound card

VA is a real time program which simulates a set of electronic instruments, such as:

Oscilloscope (dual channel, xy, time division, trigger);

Spectrum Analyzer with amplitude and phase display (linear, log, lines, bar, octaves band analysis 1/3, 1/6, 1/9, 1/12, 1/24);

Wave-form generator with "custom functions", triangular, square, sinusoidal (all with NO ALIASING and smooth transition), white/pink noise, pulse generation, DC generation;

Frequency meter (in time and frequency domain) and counter; in time domain by means of a real time zero crossing algorithm;

Volt meter with DC, true RMS, peak to peak and mean display plus resolution calculus;

Filtering (low pass, hi pass, band pass, band reject, notch, "diode", DC removal);

Memo windows (data log) for analysis and storage of time series, spectrum and phase  with "triggering" events; THD and Impedance data logging with spline interpolation; possibility to save the graphics in various format (.tee, .txt, .wmf) )and display them with an internal viewer;

Screenshot of Spectrum and Scope window;

A TRUE software digital analog conversion (for complete signal reconstruction using Nyquist theorem) ;

Frequency compensation: possibility to create/edit a custom frequency response and  add it to the spectrum analyzer computed spectrum; added standard weighting curves A,B,C in parallel with custom frequency response;

Support for 8/16/24 bit soundcard by means of API calls;

Internal 80 bit IEEE floating point variables for minimum rounding error;

Unlimited frequency sampling (depend from the capabilities of your soundcard/acquisition device);

Cepstrum analysis;

Cross Correlation;

Extended THD measurements, with automatic sweep, compensation, data log;

ZRLC-meter with Vector scope, automatic sweep in time and frequency for automatic measurement;

Calibration mechanism (you can calibrate the VA scales directly in VOLT or dB or percent full scale) ;

Set of values computed in real time (peak to peak, peak, crest factor, form factor, true rms, mean, frequency with zero-crossing algorithm).

http://www.sillanumsoft.org/