Vibrator powering Bedini Coil

[john_g]

Hi All

I have recently managed to get hold of some old radio vibrators. These were used pre transistor days to produce a square wave pulse to create AC from a DC, via a transformer. Basically they are like an old style buzzer with extra contacts on the buzzer arm used as contacts. I notice Eric Dollard’s car power supply uses a split reed type of vibrator.

http://www.keepandshare.com/doc/3173...ator-344k?da=y
http://www.keepandshare.com/doc/3187...5-pm-607k?da=y

Here’s the transistor type that replaced the mechanical types, note the small centre tapped transformer:

http://www.keepandshare.com/doc/3187...5-pm-328k?da=y


What I find surprising about these is they are very quiet in operation and smooth; quite a lot of design thought was put into these as can be seen in a design book by Mallory:

http://www.pmillett.com/tubebooks/Bo...llory_vibe.pdf

I have connected one up to a winding on a multi stand coil and shown the result from the scope reading:

http://www.keepandshare.com/doc/3173...300v-585k?da=y


It can be seen that the output is very consistent; it operates at 100 cycles (Hz). To prove, the divisions on the scope are 25ms. Spike of 300v.
Heres the contacts working – no sparking:

http://www.keepandshare.com/doc/3173...acts-551k?da=y

Regards

John

[gyula]

Hi John,

Your post topic recalls Ossie's battery charger setup of some years ago in which he placed a vibrating reed switch into the base of a switching transistor and got multiple spikes from the series of collapsing field sequences instead of a single switch on spike, perhaps you had come across his document on it too:
http://www.fluxite.com/WorkingRadiantEnergy.pdf

I mention this because his reed switch may be substituted by such a vibrator and perhaps the latter would be more durable than the reed switch. Especially when used in series with the base-emitter electrodes of a transistor with an also series resistor to reduce any excess current due to higher than 6V supply voltages. Although Ossie suggested two reed switches in series to reduce the wear-out process (see his post on this here
A Working Radiant Free Energy System ) I believe the use of such vibrator in his setup could lead to higher power levels.

Gyula

PS Is there somewhere a schematic on the transistorized type that replaced the mechanical ones?

[john_g]

Hi Gyula

I hadn't seen Ossies thread - will have a look. For some reason the coil I'm using doesn't like an inline resistance - need to look into this more, however the spikes are impessive.

Some info here on solid state replacements of vibrators:

The AWA Journal - More Adventures With Transistors

If you google "replacing radio vibrator with transistor" you should get some more info.

Regards

John

[john_g]

Spikes 25ms - 1us

Hi All

Here’s some screen shots showing the spike expanded at various time bases, from the mechanical switching. Note what appears to be one spike is actually comprised of many, which I hadn’t appreciated before. These shots are taken before the FWBR. The FWBR seems to convert the oscillating wave into only one spike:

25ms:
http://www.keepandshare.com/doc/3189...4-am-682k?da=y

5ms:
http://www.keepandshare.com/doc/3189...4-am-717k?da=y

500us:
http://www.keepandshare.com/doc/3189...4-am-651k?da=y

25us:
http://www.keepandshare.com/doc/3189...4-am-674k?da=y

1us:
http://www.keepandshare.com/doc/3189...4-am-741k?da=y

I wonder if this is what John Bedini is looking at in the FEG page21?

Regards

John

[gyula]

Hi John,

Thanks for the link, was useful and now that I have learnt about the inner world of vibrators I think that replacing the reed switch in Ossie's setup with either a mechanical or a SS type vibrator would not be a brilliant idea, lol.
Nevertheless I found this SS type vibrator worth to recall when someone needs it:
http://www.radiomuseum.org/forumdata...ator_120hz.png

Perhaps your coil does not like an inline resistance because it is sensitive to the voltage level and a voltage drop across the resistance is excessive? In case of a 6V vibrator in a car radio probably the coil was optimized for a voltage range the 6V battery established i.e. between 6-7.5V, to keep the vibration frequency within spec.

Thanks, Gyula

Hi Gyula

I hadn't seen Ossies thread - will have a look. For some reason the coil I'm using doesn't like an inline resistance - need to look into this more, however the spikes are impessive.

Some info here on solid state replacements of vibrators:

The AWA Journal - More Adventures With Transistors

If you google "replacing radio vibrator with transistor" you should get some more info.

Regards

John