Information on EMEM-device Construction, and NEW EMEM Circuit Board

All photos and text copyright 2002, 2003, 2005, 2008 and may not be used in any way without advance written permission of the author. Updated 04/26/08

NEW !! PRELIMINARY data; EMEM circuit board with both EMEM oscillator, Pulser Oscillator, and Input Amplifier for external inputs. The EMEM oscillator covers the range of 10 hertz to 10,000 hertz, while the Pulser Oscillator provides pulsing, or gating, from about 1 pulse per second to at least 5 pulses per second at approximately 50% duty cycle. The output of this circuit board is sufficient to drive either a darlington transistor, of if ordered as such, to drive a MosFet power transistor (no more blown transistors.) The board also has provision for external inputs, such as PC Sound Card, or from most of the available programmable oscillators. The board is designed and prototypes are here but not yet populated with parts or tested. Prototypes built and tested available for $ 175 plus $10 shipping (may have minor jumpers and modifications), USA Only. We will also have a bag of the necessary potentiometers and switches available for building your own EMEM, approximately $ 125 plus $10 shipping, USA Only. (A few of the parts are quite expensive.) Circuit board is 2.4" x 3.8" in size, mounts with 4 screws and is connectorized for easy installation, small screwdriver needed (supplied with the board.) 1.5 foot Cable harness also available if needed $50.00 plus $10 shipping. These are available built and tested only. Email to dave -at- for information.

Also coming: an output board: high voltage power transistor mounted on a heatsink with a voltage regulated fan to help keep it cool, along with circuitry to turn the system OFF if it gets too hot; In development. Along with this is a ferrite coil to replace the ignition coil, this will be able to generate frequencies much higher than the standard ignition coils (may require a modification to the EMEM circuit Board.) Now, back to our regularly scheduled programming...

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NOTE - copies of the dual-oscillator EMEM board schematic, preamplifier schematic, and wiring diagram are in process. This is much fancier a unit than it has to be, most EMEM type devices don't have provision for metering the output current, or for using an external signal into the unit (and hence an amplifier..), or the second oscillator to provide for pulsing the output, etc, etc. The very basics are a frequency generator that can drive the power transistor, the power transistor itself on a heat sink, and the ignition coil. Everything else is "window dressing" which may make the unit easier to use. Note that we are working on a much less expensive version for use with a frequency generator, CD player (or even a tape playback unit) in place of the frequency generator - we expect these to be in modules (Amplifier, Output Driver, Power Supply, and Plasma Lamp! Costs should be reasonable, and one just plugs the various pieces together! Check back soon ..)  The handheld preamplifier is almost ready, and will accept almost any input, square it up, and drive nearly any type of plasma device (may need an adapter for some devices.) Check back soon!

WARNING !!!!   LETHAL Voltages are present on the output of the HIGH-VOLTAGE IGNITION COIL (30 to 40 thousand volts!!!). If you do not have experience with such voltages, do not build this unit. By reading this page, and / or by downloading any of this information, YOU HAVE ACCEPTED FULL RESPONSIBILITY FOR ANY AND ALL HAZARDS IN BUILDING SUCH A DEVICE, and have given DFE Research and the author full immunity, and release us from any and all liability, for any injury you or any other person may suffer from this device. We have NO responsibility or liability for any injury, harm, damage, or even death from this device. DFE Research and the author make absolutely NO claims for any medical or health benefit regarding the use of this device. The information on these pages is offered for educational purposes only.

Frequency Generator - While the EMEM internal oscillator is fine, we very much like the RTI-4050 by Resonant Light in Canada. It's a programmable unit that works fine with a 9 volt or 12 volt AC adapter from Radio Shack, and can even be used (the output is adjustible) as a pad device by itself. Once a person has adjusted frequencies manually for awhile, having this very accurate and programmable unit is good. (we receive nothing for this endorsement.. its just a good product.) There is also the F-100 series of function generators - Click HERE.

This page (still under construction) gives information and hints & tips on building the EMEM device. Someone with a minimal electronics workshop and some woodworking equipment can build an EMEM type machine for under $300, depending on the plasma lamp desired, and on the frequency source wanted. The Phanotron lamp, as example, costs over $200 by itself, and an accurate programmable frequency generator, for use with this device, can cost $700 and above, although there are several programs available (Blaster-5 or "Rife Generator" or "Frex12" that can be used with a PC or laptop computer - these need a preamplifier, since their output signal isn't sufficient to drive the output transistor in my circuit, although they "might" have enough drive for the EMEM device shown on Dr. Loyd's website. It is worthy of note that the EMEM typically has a built-in frequency source, and if used with a handheld frequency meter, will give satisfactory results even without the higher-priced frequency generator and meter (the better equipment is just more precise and far easier to use, and is programmable.) For a relative comparison, the system shown below had a parts cost of approximately $1200 - the housing and the internal chassis being the most expensive items. Many EMEM devices are built into a wooden case with perforated metal for ventilation, and have a parts cost of under $300. The actual EMEM device is quite simple, being just a power supply, oscillator, output transistor on a heat sink, a series of potentiometers to vary the internal frequency, and the case itself. Dr. Richard Loyd has a very simple version of the EMEM detailed at his website HERE.

The EMEM device, originally invented by Dan Tracy, has many followers and experimenters who say it is a viable alternative to the higher-priced Rife Bare device. Some versions of the EMEM device may be used as a pad device - and may be more effective than a radiant-energy device for some conditions.

This page is under construction, and will be updated as information becomes available. We expect to have photographs of various parameters of an EMEM device in operation - the high voltage waveform across the tube, the current waveform, photonic waveforms, as well as photos of circuit boards which may be built with the oscillators, preamplifiers and metering circuits which make the EMEM an attractive alternative to the commercial devices. The following are in process: (Better schematics and circuit board layouts will be added later)





Circuit Wiring Diagram (under construction)

Power Supply Wiring (under construction)  The power supply is a 12.6 volt transformer wired to a full-wave bridge rectifier, and the output of the bridge filtered by as large a capacitor as can easily be placed into the housing - 20,000 ufd or more at 25 VDC. Be sure to use a fuse (2 amp suggested) and power switch on the input to the transformer! For added current capacity, two of the transformers may be used wired in parallel. If doing this, one may want to add a series resistor or a three watt 4.7 volt zener diode in the lead to any 12 VDC fan used - the two transformers together, with the filter capacitor, will raise the ouput voltage enough that the fan needs a lower voltage - the fans really are designed for 12 volts, not 14 or 16 volts.. Using two transformers may mean using a 4 amp fuse on the AC power input. I have also thought about using a 24 volt center tapped transformer into two hefty diodes (can still use the bridge for this) and that into the filter capacitor, and ALSO another smaller single diode from one side of the transformer (the center tap is grounded in this configuration) out to the ventilation fan. Ten volts or so to the fan is ok, it just needs to keep the air moving, and it CANNOT be hit with over 12 volts dc (it fails.)


Dual 555 Oscillator Board (Main oscillator, plus pulsing oscillator) The main oscillator has a frequency range from approximately 10 hertz (ten pulses per second) to over 10,000 hertz. The second oscillator on the board has a range of approximately one hertz - one pulse per second - to approximately 10 hertz. The second "pulsing" oscillator can be switched into the circuit, if desired, with either the internal oscillator, or with an external input. Some experimenters have found that pulsing the output of the plasma lamp appears to produce better results. The board shown here also had a preamp built into it (far right end), however I wasn't satisfied with the preamp, and did a separate preamp board (below.) This means that a new board is being designed without the preamp on it. My original board was designed using PCB Express' layout software, which is very nice and easy to use, but can only be sent online to them for manufacturing - three boards for $60 if small enough. Their layout outputs aren't compatible with anything else, so for the home experimenter, I'm trying to find a better layout package that will print on a laserjet, and then be used to make transparencies for exposing a PC Board.



Preamplifier Board (for use with external frequency generators) We used this unit with a laptop running the Blaster-5 program. The laptop had perhaps a one-volt output signal, however the driver for the power transistor used in the EMEM needed a 12 volt signal to drive it, hence this amplifier. The yellowish units are speed-up capacitors, allowing the amplifier to drive the output transistor at under a one microsecond rise time (In plasma lamp units, usually the faster they can be driven the better - there is evidence that the high rise-time of the plasma turn-on "ignition" is important for the device to work satisfactorily.) The ignition coil, however, doesn't saturate that quickly, and there really isn't any point in trying for too fast a circuit - it won't help. This amplifier was built to be able to drive pads also, in case one wanted to build a pad unit. In this case, the speed-up capacitors would be good to include. Its output is nominally at zero volts, rising to just about the power supply's input voltage with an input signal, so it can drive almost any type of output transistor in an EMEM-type unit. Battery operation, for isolation from possible and dangerous AC ground loops, may be used as well (if not using it to drive a higher-power plasma lamp).

NOTE: We also offer the SA-02 preamp (click HERE) for use with systems such as the EMEM and similar devices, as well as a module for it which may be used with Rife/Bare equipment - just for those using their PC or similar frequency generating devices and want to square up the signal before feeding your favorite plasma lamp device. Cost is $115, and various accessories are available for use with the device. Battery or AC adapter operation.


Tube Current Metering Board - This drives the meter on the front panel of the EMEM system, and gives a relative output current indicator of the current through the tube. The board was designed for use with several different types of 0 to 1 milliamp meters. Metering the relative tube current will show the non-linearity of the ignition coil, the output of which falls off severely above 2000 or 3000 hertz. As example, if the meter is adjusted for a reading of 90 at 100 hertz - close to maximium output for ignition coils, the reading may only be 5 or a bit higher at 10,000 hertz. A newer air or ferrite-core ignition transformer is needed on these devices. We have prototype ferrite-core transformers we're experimenting with, and their frequency response if far superior to the ignition coil. A very flat response with full output power to nearly 20 khz. Not yet available for sale.

Power Transistor Schematic. This is a static sensitive device, so handle it carefully. The gate should be connected to ground in some way at all times (shown here is a resistor connected to ground - that helps keep static damage from getting to it.)



Photos of Construction (more coming) Note that the rear panel is folded back in this photo, the spacing is really tight. The MSD ignition coil is mounted on a heatsink, as is the output drive transistor - I used a power FET good for 600 volts and 16 amperes of current. If one is using ther Blaster-5 program, the power transistor won't even get warm, but using the internal oscillator, with it's approximate 50% duty cycle, the transistor will heat up. I used a 12 VDC cooling fan which blows outside air through the fins of the output transistor heatsink, as well as the fins of the power transistor heatsink, to keep them cool. One item I would like to have added, and ran out of space for, is a one-hour timer to turn off the AC power automatically... I''ve observed that some frequencies tend to help one go to sleep - it's a really good idea to have someone else in the area to be sure that the experimenter hasn't fallen asleep while running the machine - or have a timer set to do it. An external one-hour timer, available in larger hardware stores, might be used as example, with the EMEM plugged into it, and the timer plugged into the wall.


Interference with other electronic equipment: I have observed minimal or no interference with any other electronic equipment using the EMEM device - no interference whatever was observable with a television set nearby, or with an AM/FM radio's reception.

Photos of important electronics data and waveforms

Parts List

Parts Suppliers

    Plasma Lamp: We like the short 16" Double Bubble plasma lamp (link shows a tube with sensor photodiode attached for testing photonic pulse output) with HV wire and banana jacks from Allred Neon, (Click HERE): . If one wants the closer-to-original Rife tube, the Phanotron, its available from Bill Cheb at

    Ignition coil and Bracket: The  #MSD-8202 Ignition Coil and MSD Ignition Coil Bracket #MSD-8213, available from (Click HERE)    This coil produces about 50% higher output at higher frequencies than the IC12 or IC12SB coils, at a slightly higher current requirement. The grey insulator, high voltage wire and the internal clip to plug into the ignition coil are also needed. A 6 or 8 amp transformer is needed if using this coil. We may have a new supplier for another type of transformer which has far higher output that the ignition coil, especially at the higher frequencies. Check back in a month or two.

     High Voltage Wire: Very hard to find. I will supply a one foot chunk of this flexible 20 gauge 40 KV wire for $4, 2 feet for $6, 10 feet for $20, all postage paid in the US. Most experimenters won't need more than a foot if using the Barry Allred lamp, which comes with high-voltage leads and banana jacks. If ordering a Phanotron tube from Bill Cheb, we can supply longer lengths of the 40KV wire.

     Power Transformer: Jameco #102120 12.6 VAC 4 amps (shown with filter capacitor and full-wave 200 Volt 25 amp bridge rectifier). BUT, if using with the MSD coil, is underpowered - it works, but using two of these in parallel would work better, or look for a 6 amp transformer. If your application is using the Blaster-5 or other computer-driven frequency source, the 4 amp supply I used should be quite sufficient.


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