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4.5 MC RF Driven Rife tube setup
IT WORKS! These pictures are of my Rife tube setup using an 812A vacume tube like the first Rife devices did! It took several tries to get it to run without smokeing! When the schematic calls for a 75 watt screen resistor I tried a 10 watt resistor. I discovered that it would smoke after a few seconds. The same applies to the ballast resistor. Currently I am using a 25 watt resistor for the screen resistor and two 10 watt resistors in series for the ballast resistor. In the pictures you might see several capacitors in series. They are four .001 1KV caps in series to produce 250 PF 4 KV as required by the schematic. Currently I do not have the 3000 volt insulated 10 henry choke. There is lots of 60 cycles hum on it as a result. Also the device is not very stable on it's frequency of operation, it even inteferes with UHF reception on TV's!
The picture show some of the homemade parts that are needed to make it work. The first is the coil made from 40 turns of 16 gauge wire on a 2 1/2 inch form. It is tapped at turn 17. I used a piece of PVC pipe that is just under 2 1/2 inches. To space the wire I used a smaller wire wound between the windings. Then I removed the smaller wire and covered the coil with glue. This technique works well with smaller gauge wire but with this larger wire the spacing did not hold very well. For the transformer I used a modified microwave oven transformer. First the two metal shims located between the windings have to be carefully removed. They are visible in the above picture. Then I added 4 turns of 14 gauge THHN insulated winding. This winding is then connected to the old 3 volt filament winding to get 6.5 volts for the tube. From the looks of things 16 gauge wire would have done just fine. Next I tapped the high voltage winding about in the middle. It is impossible to find the exact center so I used a bridge rectifier instead of the full wave rectifier that was used in the schematic. The ground wire in the center of the transformer must be disconnected and insulated.
First of all I simplified the design. The schematic available elsewhere on the Internet has the tap on the coil going to ground. It is simpler to have it go to the 1200 volt power source. The 2 uf capacitor is now 50 uf at 1600 volts, consisting of four 200 uf 400V capacitors in series. This removes just about all the hum, without the need for a choke. There is a 10 meg resistor across them to discharge the high voltage, it takes several minutes. You can use the primary winding of a 120 volt to 24 volt at 1/2 amp transformer for a choke if you want one. It will hum alot as it will be running on 120 cycles not the 60 cycles it was designed for. The 250 pF capacitor is four .001 at 1 KV capacitors in series. The 160 pF capacitor is six .001 at 1 KV capacitors in series. The 5K resistors can be five 1K 10 watt resistors in series. My first attempts at modulating the signal resulted in the circuit breaker tripping. The choke had shorted out and was sending RF to ground. So I used two chokes to make sure it would not happen again. When it was fired up the frequency counter went crazy and the signal was not modulated. It turns out that the audio signal needs more power to drive the tube input. To do that I added a 2N6050 and 2N6057 as Common emitter current boosters. At this point the signal is only modulated about 10% with the 10 Volts Peak to Peak from my signal generator.
This amplifier gives a gain of 22 and an output of 40 volts peak to peak to drive the audio input of the 812A Rife device. My signal generator has an output of 10 volts peak to peak, but that is not enough to drive the vacume tube. At first I just useing the two power transistors to go between the signal generator and the 812A Rife device. With that setup there was about 20% modulation. So next I added the LF357 Op amp to give some amplification. A 741 Op amp would likely work as well. Next the amplifier would also pick up a lot of RF noise so a .005 capacitor was added across the feedback resistor. A second .005 capacitor from the bases of the output transistors to ground may also be needed. The power to the Op amp needs to be regulated as most Op amps can not handle more than +-20 volts.
Audio Driven Rife tube setup
The picture is of a homemade "EMEM". It uses a power FET, a car ignition transformer and a 12 volt power supply. However it is even more fun to use a 25 volt power supply. An o'scope showed the collector voltage when the power supply is at 25 volts to be around 250 volts. The scale was at 50 volts per division, so the spikes are at 250 volts! The FET is rated for 500 volts. You can do this with a 2N6059 transistor but I have fried several of them doing it because the transistor is rated for 150 volts maximum.
This is my recreation of the EMEM device found elsewhere on the Internet. It is similar to the "Poor Mans Rife" but it uses a IRFP460 Power FET instead of a 2N6059 transistor. An optional 1K resistor goes from the gate (left terminal) to the ground (right terminal). The output of the FET is the middle terminal. The FET can handle 500 volts and 20 amps so it is much more powerfull than a transistor. The "ON" resistance is also much lower and the FET runs very cool. As a result the high voltage from the ignition coil is MUCH higher than when using a transistor. It will jump a 1/8 inch gap and still have lots of power to light the argon tube. The gap is created by connecting the jumper wire to the raised edge around the high voltage connector. The orange capacitor across the coil primary is a .047 at 600 volt device.
This picture is of me playing with an Argon tube. DO NOT TRY THIS, IT IS VERY DANGEROUS! I am holding onto the glass (NOT THE METAL) at one end of the tube. The other end is going into the output of a car ignition coil. The power supply is 25 volts at 8 amps. The dancing line down the middle of the tube is such a neat effect! With this setup the ignition coil will throw a 1 inch arc, so keep your distance. You can also skip the argon tube altogether. Use a sheet of glass and place a smaller sheet of metal underneath the glass. Connect the metal to the high voltage coming from the ignition transformer. Place your hand on the glass and you get the equivelent of dozens of zappers hitting you all at once.
Audio Amplifier Driven Rife tube setup
A frequency generator program runs on the computer and goes to the input of the audio amplifier. The output of the amplifier then goes to the primary of the microwave oven transformer. The transformer primary must pe tapped at 20 to 30 turns to work. The tube will light without the capacitor or the resistor in the schematic, but adding them makes it light more evenly. In the picture it is being driven from a Frequency Generator software program to a Hafler PRO-5000 High Power Audio amplifier to a modified Microwave Oven transformer then to the Argon tube.
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