Dr. Hulda Clark Zapper


Dr. Clark Zapper - The AutoZap5     The Original Dr. Clark Zapper!

The Auto-Zap5™ is a professional, automatic, tested, and guaranteed zapper for a lifetime of trouble-free use.    - tested, used, and approved by Dr. Clark

FIVE Automated Zapping Settings!
Includes Heavy Duty Straps (or Gloves)
Use with the Super Zappicator for Maximum Results
Fail Safe Zapper 3 features guarantee correct operation at all times.
Simple to use - FULLY AUTOMATIC, has a 63 minute cycle per Dr. Clark's original design, plus 4 more.
Guaranteed 10 Volt Output.  Foolproof. Sensor LEDs give positive indication of correct output (show you that connections, current, and battery are good).
Faster Results - lower frequency (2.5 kHz) for better signal penetration. No need for more.
15 Minute Food Zappication Cycle.  (needs "plate zapper" such as the Super Zappicator.)
Cheap to run - runs about 500 hours 2 AA batteries, 10 times longer than most zappers.
Reliable - FIVE YEAR Warranty.
Sound investment - fully protected against damage from static electricity and reversed battery (which can destroy other zappers).
Convenient Sound Alert - let's you know when the cycle has completed.
Automatic battery test each time the start button is pressed: the Auto-Zap will start only if full output is assured for the entire cycle.
Top quality - solid case, Lexan label, heavy duty wires and plugs, rustproof solid copper clips and hand holds to last a lifetime. Our switches have solid silver contacts, and are rated for a million operations!


What is a Hulda Clark Zapper?

A Hulda Clark zapper is a battery powered electronic signal generator that meets the following specifications as laid down by Dr. Clark on pages 14 & 15 of "The Cure for All Diseases":


battery operated DC current

positive offset frequency (voltage never goes negative)
  sufficient voltage (5 to 10 volts)
  duration 7 minutes
  frequency (anything from 10 Hertz to 500,000 Hertz*)


How Does a Zapper it Work?

* Zappers do not kill parasites because of certain frequencies.  This is often confused, when you see other producers of zappers advertising their various frequency ranges. The zapper kills parasites and dissolves pathogenic tissue, because of it's delivery of a mild 'positive offset' electric DC pulse... not because of the specific frequency rate of that pulse.  The specific frequency resonance of the organism is another way to kill these invaders, but that technology is different than a zapper .  (more on that topic)

Many variations in zapping technique have been discovered since the one found around 1990.  The original technique showed that microscopic invaders, like our parasites, can be killed with a very small electrical DC (Direct Current) pulse with voltage from 5 to 10 volts.  (Think of voltage as 'how high' a spike of electric current rises from the baseline when it is  turned on.)   BUT... this only works if the voltage pulse is 100% positive offset.  If the voltage becomes NEGATIVE (below the baseline), even momentarily, it supports and maintains their lives!  This must be avoided. You cannot take this for granted when you purchase a zapper. The maker must assure you that it has been checked on an oscilloscope and not even 1% negative voltage found. Preferably a picture of the zapper output on an oscilloscope should accompany the unit, together with an arrow pointing to the zero line. (see below)

Dr. Clark states, "Generating positive offset frequencies is the best way to kill all pathogens quickly. But it takes more than one treatment. It takes three treatments to kill everything. Why? The first [seven minute] zapping kills viruses, bacteria, and parasites. But a few minutes later, bacteria and viruses (different ones) often recur. I conclude they had been infecting the parasites, and killing the parasites released them. The second [seven minute] zapping kills the released viruses and bacteria, but soon a few viruses appear again. They must have been infecting some of the last bacteria. After a third [seven minute] zapping I never find any viruses, bacteria or parasites, even hours later."

We have inserted the words in square brackets above to clarify misunderstood areas. Three 7-minute sessions of zapper pulses, separated by two 20-minute rest periods, constitute one automatic 63 minute zapping cycle.

Dr. Hulda Clark's specifications exclude all devices based on the work of Dr. Bob Beck, including his "zapper"/colloidal silver maker/plant growth stimulator, Brain Tuner, and magnetic pulser.  They also exclude most "Rife type" devices that we've tested, which generally produce AC output, with negative pulses that make parasites GROW!   See "The Cure for HIV and AIDS," page 71, third paragraph, quoted below.

Below is the output waveform from the Auto-Zap5 zapper as seen on a Tektronix TDS 210 oscilloscope. Note that the signal never goes down to the zero line, but remains above it at all times. This is what Dr. Clark means by "positive offset."

Auto-Zap output on oscilloscope, showing positive offset

Dr. Clark continues, "If the voltage is applied in pulses, to produce a "square" wave, it will affect many parasites at once so that the rate of raising and lowering it, called frequency, is not critical. Even though these tiny animals undoubtedly have a "mortal frequency", this rate does not need to be known or used when a square wave of electricity, totally positive, is used (see page 529)."

"A positive electrical force that pulses up and down not only appears to kill tiny invaders, it also seems to energize your white blood cells to go on an all-out attack on your enemies: your parasites, your toxins, everything, in spite of their four blockers. In spite of benzene, PCBs, metals, and asbestos!  For a time, your WBCs turn into Super-WBCs. (see note) That I why I recommend eight hours of zapping daily until you are well."

"Remember that killing parasites, by itself, as we can do with herbs, removes the HIV virus source, but this does not return immune power. A zapper, on the other hand, not only eliminates parasites; it does so by returning immune power. Each method has its own virtues."

(from "The Cure For HIV and AIDS," by Dr. Hulda Regehr Clark, pg. 71)

NOTE: This statement seems to be more true than she originally thought. A more recent update to this theory is briefly discussed here.

The original Professional Auto-Zap was the very first automatic Hulda Clark zapper ever built.  During the development, Dr. Clark tested and consulted for Arthur along the way.  AutoZap has been leading the industry for more than 25 years.  It is still the best for ease of use, effectiveness, and safety



FAIL-SAFE Design Keeps You Safe

"We designed the Auto-Zaps that way at the personal suggestion of Dr. Clark in 1995. She feels it is vital that any device people may use for experimental, theoretical health improvement must be reliable, with a clear indication that all is well, and equally clear indication of failure." [note from engineer].  If the top Green Sense LED light is on, and the bottom light is flashing quickly, you can be certain that you are getting the correct output from your Auto-Zap5.

The Auto-Zap5 is also unique because it incorporates an automatic battery test at startup.  The AutoZap5 will not start unless the battery can guarantee at least a full 60 minute cycle of correct output. We are the only one who offers 500 hours of guaranteed correct zapping from just 2 AA batteries.   Most others use 9 volt batteries and are only able to do about 50 hours, with no guarantee of correct operation even then.

Our Lower Frequency Works Faster

What about zapper output frequency? "In our experimental testing, our 2.5 kHz (2500 hertz, or pulses per second) worked significantly better than the 30 kHz suggested in Dr. Clark's book. Due to the "skin effect," it can be expected to penetrate more deeply.  I know Dr. Clark personally, and she told me in October 1995 that she had tested 5 kHz and found it to work better than 30 kHz. I had suggested it to her on the basis of the "skin effect" in physics. The skin effect causes high frequency current to travel on the surface of a conductor. Our lower 2.5 kHz frequency penetrates about 3.5 times more deeply than 30 kHz, based on calculation of the skin effect." [note from Engineer, A. Doerkson, Maker of the Auto Zap5 and friend to Dr. Clark.]

Automatic - it Keeps You Zapping Effortlessly

With the fully automatic cycles, you can use it while you are reading, watching TV or going to sleep. Full instructions are included with each Auto-Zap5. Dr. Clark also recommends foot contacts for zapping on page 518 of her new book, "The Cure for HIV and AIDS."

  No Auto-Zap Sale is Final Until You are Satisfied

USE the Auto-Zap5 daily for 90 DAYS.  If you're not feeling better, return it.

Want to Build a Hulda Clark Zapper Yourself?

Sure, you can build your own zapper in a shoe box. The plans are in Dr. Hulda Clark's books. All it takes is time and patience to find the parts, correct the two omissions in the circuit diagram (join pin 4 to pin 8, and pin 1 to battery negative: these were corrected in the 6th and later printings, which have "New Century Press" on the spine), cobble it all together, and persevere till it works. But then you have to control and time it manually, and replace the battery every month or so (you are never sure when it is low), and you are not assured of full voltage output (or any output at all!), or our more effective lower frequency. And it can be blown by a simple static shock from walking across a carpet, or putting the battery in backwards for even a second.

Compare Features of Other Zappers

Zapper Parameters:

battery operated DC

positively offset frequency (voltage never goes negative)
sufficient voltage (5 to 10 volts)
duration 7 minutes
frequency (anything from 10 Hertz to 500,000 Hertz*)

Check the features, and make SURE that the zapper you buy is tested on an oscilloscope and guaranteed to produce only DC pulses with no AC.  

Dr. Hulda Clark's specifications exclude all devices based on the work of Dr. Bob Beck, including his "zapper"/plant growth stimulator/silver colloid maker, which generates an effective 72 volts peak-to-peak AC, using a relay to alternate output polarity at only 4 Hz. His whole premise is vastly different than Dr. Clark's.

Dr. Hulda Clark's definition of "zapper" also excludes most "Rife type" devices, which generally produce AC output, with negative pulses that can make parasites GROW.  They also produce more voltage and current than a zapper. See "The Cure for HIV and AIDS," page 71, third paragraph, for details on the dangers of negative pulses.

This comparison chart shows just the main types of Hulda Clark zappers we have found for sale. They are compared by published specifications, unless we have been able to test them in our lab. Units tested in our lab are marked with an asterisk(*). Note that true Hulda Clark zappers are those designed to meet the performance guidelines outlined in the black text box on page 15 of "The Cure for All Diseases."   Many zapper makers have 'put their spin' on Dr. Clark's parameters and offer varying zapper kits up to $700 with varying accessories.   We are including here only the 'apples to apples' true, simple Dr. Clark zappers.  (before adding accessories)

Let us know if we have missed one that you would like to see here, or if you spot errors on our part. We've received some emails asking us to test certain older and/or generic zappers, and here is the response:

  • We do not review outdated zappers

  • 90% of zappers currently available are generic 555 timer-based zappers which do not require separate testing since they use the circuit in Dr. Clark's books.

  • Some 555-based units, such as the Parazapper series, The Ultimate Zapper and the Terminator zapper series have been included because we continue to get questions about them.



Digital Ultra



VariZapper Module 2.0



A6 Zapper

Zapper A6

Ultimate Zapper Ultimate Zapper QE1plus by Ken Presner Ultimate Zapper QE (2014 Model) by  Ken Presner [UZKP-QE1plus] - €389.95 : Electro Biotics, Blood Zapping,  Colloidal Silver, PEMF Magnetic Pulsing and EMF Protection - Ireland Terminator II
Guaranteed 1/4 positive offset Yes Yes Yes Yes Yes Yes Yes Yes
5-minute super-fast cycle Yes No No No No No No No
automatic cycles Yes Yes ? Yes No Yes Yes Yes
# of automatic cycles 5 3 ? 3 0 2 only 1, always on only 1, always on
Food Zappicator cycle Yes No Yes Yes No No No No
Extreme battery life Yes No No VariZapper battery life is around 20 hours No Average battery life for the A6 zapper is 15 hours No No
Confirmation of proper current flow Yes No Yes Yes Yes No No No
Output protected against static shock damage Yes No No Yes Yes No No No
Constant output voltage Yes Yes ? Yes Yes Yes Yes No

Other Zapper "Features" claimed by others...

Constant Wave





This is a marketing term used to describe the effects of removing the current-limiting resistance, and is functionally identical to the Super Stabilized Wave (see below). As Dr. Clark demonstrates in "The Cure for HIV and AIDS" the zapper waveform will naturally "round off" under load (ie, while zapping) and the "Constant Wave" actually prevents this natural alteration of the zapper waveform into the ideal waveform, actually reducing effectiveness of the zapper while increasing risk of damage to delicate tissues. Here is Dr. Clark's ideal zapper waveform from "The Cure for HIV and AIDS," page 514:

Superior (Super) Stabilized Wave

This is a marketing term invented by the DCRA to describe the removal of a current-limiting stage in the output of the Super Zapper DeLuxe zapper models. This current limiting was intended by Dr. Hulda Clark to prevent tissue damage. Removing it is not a benefit, and is not endorsed or approved by Dr. Clark, who prefers that her devices be unconditionally safe and effective.

Superior Harmonics

This is another marketing term which has led some people to believe that harmonics are a desirable feature in a Zapper. It is a claim based on the removal of the current limiting resistance as noted above, producing a sharper waveform.


The idea of using a Zapper for electroporation therapy is uninformed nonsense, as the voltages involved (typically 10,000 - 100,000 volts per cm) are far too high for any home use device, much less a safe, effective Zapper designed to Dr. Clark's specifications.

AC Adapter

We purposely do not include an AC adapter because the potential for catastrophic failure and electric shock would undo all the good we are accomplishing with the AutZap5 zapper.




taken from  "How Bio Frequencies Can Help You"
by A. E. Baklayan
Read the Full Report Here

Beginning cold
The zapper has proven it's value as an aid against the acute flood of bacteria, which is reduced immediately. We receive enthusiastic reports about how colds are either totally cut off or their course was shortened or soothed.

Chronic Bronchitis:
To help the immune system break the cycle of chronic bronchitis, one should zap regularly for at least 4 months. In spring and summer, the 10 minute per day maintenance should be done preventatively for a few days from time to time; zap regularly in winter and at the maximum dose during the most dangerous time.... Many people that had suffered from chronic recurring bronchitis for sometimes decades, has been cured this way and could experience symptom free winter months for the first time.

Chronic Cystitis:
In case of chronic cystitis, especially for women, we have found it most effective to let the current flow through the feet and keep up regular treatments. The same applies to nephritis and pyelitis. The bio frequency emitted by the zapper can help reduce the dosage of medicine required.

Pain of Movement in the Body
Time and again rheumatic sufferers find it useful to use the zapper. Despite the fact that the root cause of rheumatism has nothing to do with parasites or bacteria, the inflammations at the joints are kept alive by germs. This bacterial burden can effectively be reduced with the zapper. In our experience we have often found a latent trichinella problem in rheumatics.

It is the great merit of practitioners who test bio-energetically to have found out that certain parasites - especially Ascaris - are responsible for bronchial asthma, so that the use of the zapper can often achieve amazing results. Many people are able to live without asthma sprays after consequently using the zapper. We have had the best results by placing one electrode on the chest, the place of incident, while holding the other electrode in the hand. Many people report that they feel how something is released. Even with hard and persistent coughs relief can sometimes be achieved. After coughing up intensively, the condition increasingly improves. Some patients zap a bit longer in these cases - up to 3 times 12 minutes, until they feel a substantial improvement. Ingesting thyme juice or drops regularly can be a great help.

It is Dr. Clark’s merit to have discovered the fact that parasitic burdens play a central role in cancer. You can find more information about this subject in "The Cure for All Cancers" and "The Cure for All Advanced Cancers". Of course the zapper can’t be regarded as a single measure against cancer, but the parasitic burden can effectively be reduced, so that the other therapeutic steps can be effective.

Stress of the central nervous system
Burdens such as epilepsy, Parkinson’s or other nervous disorders are caused by parasitic influences and environmental toxins. We have seen a large number of patients experience relief of their condition and they do not want to be without this support from bio frequencies! Naturally, one must work most intensively both on eliminating parasites and toxins as well as building up metabolism to beat these diseases.

Migraines and Headaches
It is a revolutionary finding that Strongyloides (threadworms) can be found in most migraine patients. When this is the case, the migraine attacks stop as soon as the Strongyloides are gone. We have collected dozens of documented cases over 3 years. If the migraines return, one has reinfected oneself. Here too the zapper offers its indispensable help, in therapy, maintenance and prevention.

Menstruation Pains
In case of menstrual pains and PMS the use of the zapper is promising. In most cases Enterobius vermicularis, round- and threadworms are part of the picture. You should start the therapy in between two periods and zap intensively during menstruation, i.e. twice daily 3x7 minutes.

Through bio-energetic testing, I have systematically researched the connection between allergies and parasitic burdens in hundreds of patients over the course of two years, such that I can say with certainty that every allergic has parasites. The parasites prevent the body from interrupting the immune-allergic reaction. I have been able to determine exactly which parasites in connection with which foreign proteins cause an over sensitivity in the body. You can find these findings in my book "Parasites - the hidden cause of chronic diseases" (German). To get rid of the worst infestation, the zapper is a good first aid tool for any allergic in all kinds of allergies, while in severe cases other measures are necessary.


"My daughter and I have gone through the first treatment successfully, but we would like to repeat it again in a few months. The zapper is great too, by the way. We used it both of us at the onset of cold/flu and managed to get well in one day and a half (using herbal remedies in addition to zapping).  With many thanks for the work you do, and best wishes"  -  Iuliana


The AutoZap5 is EASY to use!

Each of the 5 Modes is automated.  Just start the cycle and relax. It will turn off and beep automatically.

The best feature of this design is the RED mode, which does the job in just 5 minutes. It SIMULTANEOUSLY generates 1000's of thousands of zapper signal frequencies at once!  It's like being hooked up to thousands of zappers all at one time, each with a DIFFERENT hertz (frequency) setting.  When we asked the engineer about the specifics of this proprietary signal design, he responded by sharing...

AutoZap 5 zapper with SuperStraps

 "...is a complex mix of digital AM and FM modulation, with only positive pulses, offset by 0.25 volts positive per Dr. Clark's specifications. ....On a spectrum analyzer the Auto-Zap 5 has all the frequencies from about 1 kHz to well over 1.5 MHz. And despite the fact that it works so much more quickly, the measured average voltage of our synthesized signal is less than 1/3 of the voltage of a square wave like a conventional zapper. We get faster results with a lot less power put into the body.... In 4 years of testing it seems to truly duplicate the effectiveness of the 63-minute cycle in only 5 minutes. It is more than 12 times faster, and just as effective. And it will come with our full 100% money-back guarantee."


Easy to Use Icon Vector Images (over 200)


Quick-Zapping Mode: 5 Minutes
This super fast mode is the crown jewel of the AutoZap 5. WE USE IT EVERY DAY, and suggest you do the same. Press and release the A button once.  The Red mode LED will light.  In a few seconds you will hear a beep, and the green SenseAlert LED will light if you have the wristbands correctly connected.  In just 5 minutes the cycle is over, and you will hear a triple descending beep as it shuts off.  Five years of testing have shown that this simple 5 minute cycle is as effective as the classic 63-minute cycle. You may repeat this 5 minute cycle as often as you wish by simply pressing button A after you hear the end beep. 

Food Zappicator Mode: 15 Minutes

Connect the SuperZappicator to the AutoZap 5. Press the A button twice. The Green mode LED will light. Wait, and in a few seconds you will hear a beep as the cycle starts. The green SenseAlert light stays OFF with the zappicator. After 15 minutes the descending end beep sounds, and you're done.




Body Zappicator Mode: 30 Minute    
Plug in the SuperZappicator. Press the A button twice, then press the B button. The Green mode LED will start to flash, the green SenseAlert light will stay OFF.  It will run for 30 minutes, ending with a triple descending beep. Repeat if desired. 

60-Minute Constant-On Mode
Press the A button 3 times. The Yellow mode LED will light.  This mode is designed for those who need extensive zapping without interruption. It uses the gentle signal from the 5-minute Quick-zapping cycle, and runs for 60 minutes continuously. It is just like doing twelve 5-minute cycles, one right after the other. This gives the effect of twelve hours of zapping the old way.

"Classic” Cycle 7/20/7/20/7 Minutes
If you would like to do Dr. Clarkʼs original timed zapping cycle, you may do it in the flashing yellow mode.  Press and release the A button 3 times (the yellow LED mode will light), then press the B button.  The Yellow LED will flash.  This runs 7 minutes on / 20 minutes off / 7 minutes on / 20 minutes off / 7 minutes on.  The unit gives a long beep at the start of each output session, and a short beep at the beginning of each rest period. It will shut off at the end of the cycle with a triple descending beep.   Side note: the 5-minute Quick-Zapping cycle is just as effective, if not more, and is much faster.




A Word About the Superstraps

The Super Straps are specially made for us in Italy.  Because they are about 3 times wider than others, they give much better contact over a large surface area on the wrist, and maintain that contact throughout the entire zapping session. The secure Velcro buckle and closure also helps to place pressure on the flat top and bottom of the wrist, unlike flimsy elastic straps which concentrate force on the bony edges of the wrist. They will not cause burns like some of the narrow wrist straps sold by others. The yellow absorbent surface is backed by a high tech conductive carbon fabric, providing a good moisture reservoir and electrical conduction.

Because of their personal nature, we recommend that each user have their own set. If you share your zapper with a pet you should always use separate straps or footpads for them.

Works well with ANY Zapper or Frequency Generator


Super Straps compared with normal wristband



The Auto-Zap5   $289

FIVE variations of zapping!
Guaranteed, Failsafe, 10 Volt Output!
Includes Heavy Duty Straps
Use with the Super Zappicator for maximum results!
5 Year Full Warranty
90 Day Satisfaction Guarantee
Instructions Included, Video & Paper

order now – Semmens Oils


Zapper "Super Straps"
Reliable Wrist Bands!  -  $50

Zapper Wrist Bands for Maximum Convenience

  • Universal Connector to fit a wide variety of Zappers
  • Ultra-wide strap is comfortable and secure
  • Exceptional contact area and absorbent surface prevents burns

(Included when you purchase an Auto-Zap5.)

Note: No returns due to personal nature of use.

The New Flex Zappicator  $159

Revolutionary food and BODY polarization device. It is like a magnetic "antenna" helping to send zapping power directly into the body as well as into food. Works great for teeth, head, food, and body   Replaces the tooth wand and food zappicator!   Five year full warranty. (Requires a zapper to power it.)

Note: No returns due to personal nature of device.


Read More Here

The Autozap5 "Integrated Wellness System" comes with all you see here!

Integrated Wellness System with SuperStraps

Just $429

  Professional Auto-Zap5
  Super FlexZappicator
  Heavy Duty Straps
  Two Wire Sets
  5 Year Full Warranty
  90 Day Satisfaction Guarantee
  Instructions, Video & Paper

order now – Semmens Oils


Every household should have at least 1 zapper!

Note:  Site owner has successfully implemented Dr. Clark's cancer protocols. She was trained on this equipment at Dr. Clark's clinic in Tijuana, Mexico.  Although Dr. Clark NEVER publicly endorsed any product anywhere anytime, we know first hand that the AutoZap was suggested and used by her clients at the clinic.  (If they didn't already have one of their own.)
Note 2:  Dr. Clark also NEVER personally sold any product(s), nor did she ever build a zapper for sale to the public.  Many people get confused by the many sites that use her name in their website names and literature. 



Any statements about a Hulda Clark zapper are for information only. The Hulda Clark zapper is not recognized by the FDA.   

Dr. Hulda Clark Zapper