Frequently Asked Questions
What is a zapper?
A "zapper" is
defined by Dr. Hulda Clark as a battery operated DC pulse
(positive offset) generator with an output
mplitude of 5 to 10
volts (open circuit) and a frequency between 10 Hz and 500KHz
(10 to 500,000 pulses per second), with a current limited output
and a 0.25 volt constant offset. The
Auto-Zap zapper puts out 2500 DC pulses per second
with full 9 volt battery voltage, through a 1000 ohm current
does a zapper do? How does it work?
Dr. Clark has been
kind enough to share her research and findings regarding the
function of zappers with us. Contrary to popular belief,
the zapper's primary mode of operation is not to electrocute
parasites (as hypothesized in Dr. Clark's earliest
publications) but rather, the zapper appears to
stimulate the body's own natural defenses.
Initially, it was believed that parasites and other pathogens
were affected directly by the zapper's current.
More recently... she has modified
this position. It is now believed that this is a secondary
affect that is created by the zapper's signal.
According to Dr.
Clark's research and our personal experience, the tiny zapper
current subtly energizes the bloodstream. This aggressively
activates all types of white blood cells, enabling the body to
"take out the trash," including parasites large and small,
bacteria and most viruses. It happens quickly, in about an hour.
The white blood cells digest the dead invaders and they are
flushed out via the kidneys. In Dr. Clark's most recent edition
of "The Cure for HIV and AIDS," she notes that the zapper gets
white blood cells active despite the presence of toxins that
usually put them to sleep.
The internet is
full of confusing information based entirely upon Dr. Clark's
1993 publication of "The Cure for All Cancers," however, in
recent years Dr. Clark has revised her position on key elements
of the method by which the zapper operates.
Zapping parasites does
not directly affect the parasites themselves; instead,
it acts positively upon the immune system, which then kills and
eliminates the parasites. An important point is that the method
of action may be different from Dr. Clark's original ideas,
but the end
result is the same.
In other words, Dr. Clark has discovered that the zapper
hyper-activates your own immune system which can then take out
the trash. Although the zapper can be seen to electrocute and
disrupt the functioning of some parasitic organisms in a petri
dish, different principles apply when the same zapper current is
applied to a person.
Do I need to
select a particular frequency for a particular problem that I
wish to address in my body?"
Dr. Clark's answer
to that is simple: the zapper wakes up your own white blood
cells, and they are well able to identify and destroy parasites,
bacteria, viruses and fungi of all kinds using their inborn
wisdom. No tuning is needed.
Any DC pulse generator needs an output frequency, or else it
becomes a simple DC power source, like a battery. Many people
get the idea of tuning zapper frequencies for particular
parasites from the tables of frequencies in the back of her
book, The Cure for All Diseases. This table of frequencies
was developed before she had discovered the
zapper, and was required for destroying parasites and pathogens
using tuned frequencies with an AC signal, NOT the DC pulses of
a zapper. As she points out on pages 13 and 14 of The Cure
for All Diseases, using these frequencies required two stages.
First, the pathogen had to be identified by Syncrometer testing,
and second, it had to be destroyed by applying the selected
frequency for three minutes using an AC generator. This
procedure could take many hours, and the results were often
temporary and frustrating. The zapper is a much simpler, better
way. I have asked Dr. Clark personally about the "zappers" which
use frequency keys or tuning devices, and she told me that she
does not use or recommend them.
current that goes back and forth between the electrodes or hand
cylinders (via the person holding the zapper) usually AC or DC?
A Dr. Clark zapper must have only
positive DC pulses between its output leads. She writes that
even a tiny negative pulse can help sustain the life of a
parasite. This consideration excludes all Bob Beck "blood
purification" type devices, and many Rife devices as well.
How can the zapper
and yet leave the human body unharmed?
Zapping Isn't "Electrocution"
answer: when a parasite is inside the human body it is
often shielded against electrocution. For example, the power
required to kill embedded intestinal parasites through
electrocution is greater than the power required to kill the
host (in this case, the human body) and that is why we don't try
to electrocute parasites when using the zapper.
Dr. Clark's research and thousands of testimonials have shown
that the zapper effectively
kills parasites. Clearly the zapper is a powerful tool,
but it does not work as Dr. Hulda Clark initially hypothesized
in 1995. It does not electrocute parasites at all.
In fact, the zapper works by a
different mechanism entirely. See above.
Does the Auto-Zap have negative pulses coming out?
It fully meets Dr. Clark's specification for a "positively
offset" DC signal. Every single Auto-Zap is tested on a digital
oscilloscope to ensure correct output, with only positive
pulses. I have tested two zappers from good
manufacturers that had both positive and negative pulses.
Dr. Clark says: "The maker must assure you that [the zapper] has
been checked on an oscilloscope and not even 1% negative voltage
found." This is important because "if the varying voltage
becomes NEGATIVE, even momentarily, it supports and
maintains [the parasites'] lives." (The Cure for HIV
and AIDS, page 71)
designer, manufacturer and a professional engineer, I certify
that there is never a negative voltage output from any Auto-Zap
zapper, and that we verify this on a digital oscilloscope for
every zapper we sell. Here is a typical Auto-Zap zapper output
displayed on an oscilloscope. Note that the black "square wave"
line never goes below the zero volt line (blue arrow):
safe? Yes! Zappers have been used by hundreds of
thousands of people of all ages for more than 15 years, with no
harm reported. You may feel worse at the start as the parasites
die off, but this is usually gone within ten days. Dr. Clark
recommends against using the zapper during pregnancy, or if you
have a pacemaker. To zap safely during pregnancy, use the "Leg
Zapping" method described below. You may find that the benefits
of zapper use make it a good choice in helping you and baby stay
healthy. See the special "Leg Zapping" notes below for safely
zapping with "smart pacemakers" and ICD's.
specific frequencies that a typical zapper outputs?
From page 15 of
The Cure for All Diseases, Dr. Clark specifies a frequency range
of 10 Hz to 500,000 Hz for a zapper. The example circuit she
gives operates at 30,000 Hz. Because of a physical phenomenon
called the skin effect, I chose to give our Auto-Zap
professional zapper an operating frequency of 2500 Hz. This
lower frequency current will penetrate considerably deeper in
the body, better energizing the blood flow in the deep large
arteries and veins. It also works very well for powering
zappicators, which are simple magnetic antennas which allow
zapping substances like foods, which do not have an immune
volts and amps does a typical zapper output?
On page 15 of her
book, The Cure for All Diseases, Dr. Clark summarizes the
specifications for a zapper. She says it must have a DC output
of 5 to 10 V. We can now calculate the maximum current output
from the output resistance of the generating circuit. She uses a
1000 ohm resistor to limit the output current to safe and
effective levels. With a maximum output of 5 to 10 V, this
resistance gives us a maximum possible output current of 5 to 10
milliamps. In practice, the actual DC current delivered to the
body is considerably lower than this, because of the extra
resistance at the surface of the skin and in the body itself.
Is it safe to zap if I have a pacemaker?
pacemakers are fine with the zapper. But modified "Leg
Zapping" contact arrangements are needed for two new devices:
Implantable Cardioverter Defibrillators (ICD's) and "smart
pacemakers." These devices "listen" to the electrical
signals put out by the heart muscles. When it detects a
high-frequency signal above the normal "heart signal" range of
10-100 Hz, the ICD is set to interpret it as fibrillation, and
to correct it by a massive jolt of electricity to restart and
synchronize the fibrillating tissue. If an AC current of 1000
microamps or more (and even as low as 200 microamps in some
cases) is applied to the torso, it may be detected and wrongly
interpreted as fibrillation, with the resulting defibrillation
signal jolting the heart muscle needlessly.
Even though Hulda Clark zappers always put out DC pulses, the
induced currents may appear as AC inside the body to the ICD
trigger detector, and can cause these unwanted defibrillation
pulses. If you have an ICD, DO NOT USE A ZAPPER HAND TO
HAND. USE THE "LEG ZAPPING" or "ARM ZAPPING" APPROACH BELOW to
prevent current from entering the torso.
There are also new technology "smart pacemakers"
like the Medtronics EnPulse that watch the heart's natural
signal, intervening or "pacing" only when needed. They are
unlikely to have a problem with the zapper current because they
monitor the 10-100 Hz frequency band. However, if they
do detect zapper current as a stimulus, they will produce a slow
pacing signal that may interact with the heart's natural
pacemaker output to give a surging sensation as the
heart rate varies. In a small group, about 5% of users, it is
possible that this slow pacing signal could cause a type of fast
heartbeat that could cause serious problems.
The standard way to handle and assess these risks for
"smart pacemaker" wearers is for the patient to bring the zapper
to their cardiologist's office, and apply the zapper
current in the usual way while monitoring the smart pacemaker's
output via its built-in telemetry link to the doctor's computer
readout. If there is a problem, it will show up clearly as
arrhythmia or other abnormality. If no effect is observed, the
doctor can then increase the trigger sensitivity of the
implanted device with his remote programmer, and see how much
safety margin exists for this patient before problems appear. If
the zapper does not cause an effect with the sensitivity raised
one increment from its programmed setting, it is regarded as
having an adequate margin of safety, and may be safely used.
In any case, you may use the "Leg Zapping" or Arm
Zapping" methods below to safely enjoy the benefits of zapping.
What is "LEG ZAPPING?" and "ARM ZAPPING"?
Leg or Arm
Zapping is a way to zap that will keep zapper current out of the
torso of the body, including the heart. This will prevent
possible problems with the new ICD and "smart pacemaker"
devices, and with zapping during pregnancy. Dr. Clark
says that the idea with zapping is to put the tiny zapper
current through a maximum of blood flow, to energize the white
blood cells efficiently. I believe the safest way for those with
ICDs or "smart" pacemakers to zap effectively is to hold one
handhold in your hand, and tuck the other handhold under the
armpit on the same side, preferably the right arm. This causes
the current to intersect the major blood flow of the large arm
arteries. For leg zapping use a footpad on one foot, with a
conductive band (or modified footpad) around the calf or thigh
of the same leg to keep the zapper current out of the torso
completely, while making the current intersect the major blood
flow of the large leg arteries.
often should I use the Auto-Zap zapper?
recommends zapping at least one full 63-minute cycle daily for
the first month, and at least twice a week after that. I myself
use it every other day for maintenance. At her clinic she has
patients zapping for eight hours a day. Our Auto-Zap
instructions cover other application hints.
can I see the Auto-Zap5 zapper instructions?
for full instructions with pictures.
does the Auto-Zap compare to the others available?
Click here to see our exclusive Hulda Clark Zapper Comparison
Chart. The Auto-Zap goes much farther than the
circuit in Dr. Clark's books (which is in 95% of the zappers
offered on the Web). I use and recommend the Auto-Zap zapper for
lower frequency penetrates deeper
- it gives
over 500 hours of zapping on a single 9 volt
alkaline battery: about 10 times longer than the
competition (18 months if you use it one full cycle per day)
- it has a
failsafe sensor LED light to show when you
have good contact and proper connections
- it is
ruggedly built with full protection
against static electricity and reversed battery
- it has
a beeper to tell you when it is turning the
pulse output on and off (so you don't have to hold the
hand-holds during the 21 minute rest periods)
- it has
an automatic battery load test every time
you turn it on
No other zapper
offers all these features. We give a full 5 year
warranty, with a three month 100% money back
guarantee. And our price is right.
you supply wrist bands?
In the past, none
have worked properly, so did not offer them. But NOW, we
have personally developed an effective set of wristbands called
Super Straps that come with the AutoZap5.
There are three
problems with conventional wrist bands, which we have solved in
Inadequate contact area: they contact best at the
outer and inner edges of the wrist, not on the flat top and
bottom areas. Handholds and foot pads give much larger contact
area. Our new
Super Straps overcome this problem by offering much
wider contact area than any other wristband.
Inadequate contact pressure: the straps cannot
press hard enough to firmly contact the top and bottom of the
wrist, or they would cut off circulation to the hand.
Super Straps compensate for this by tripling the
surface area in contact with the skin.
Inadequate moisture to ensure good contact: it is
very difficult to keep the wrist band contact area moist for the
duration of the zapping session. Dr. Clark recommends keeping
damp paper towel layers between skin and contact to prevent ions
from being driven into the skin. This is very inconvenient to do
with wrist bands. Our
Super Straps use a special foam against the skin to retain
water for good maintained contact.
What are foot pads?
Foot pads are a
pair of contact plates about 3"x 12" made from aluminum kitchen
foil or flat sheet metal (22-26 gauge). They are held by the
copper alligator clips on the Auto-Zap wires. Fold a paper towel
on top of each pad, then dampen them with about a teaspoon of
warm water. Place your feet on top of the plates and hit the
Start button. Foot pads work well as you use a computer, read or
endorses foot contacts: "Using foot electrodes helps
greatly for both plate-zapping and regular zapping." (page 506,
Cure for HIV and AIDS). We include simple instructions
for making your own foot pads from aluminum kitchen
foil. It only takes 30 seconds.
We do not supply
foot pads with the Auto-Zap5 because they cost more to ship than
to obtain at a local sheet metal shop. Use aluminum kitchen foil
to test the concept, and for traveling.
does the Auto-Zap use 2.5 kHz when Dr. Clark's circuit produces
If you check the
top of page 15 in Dr. Clark's books, you will see that the
frequency range she gives for zapping is from 10Hz to 500,000Hz.
So why the 2500Hz setting? Because it works better
at 2.5 kHz (which is 2500 Hz or 2500 pulses per second). I
confirmed this in October 1995 with Dr. Hulda Clark herself. The
lower frequency allows deeper penetration of the current due to
(She told us that much of her testing in later years were done
about AC adapters instead of batteries?
A friend wrote, "I
am interested in your zapper, but I read another zapper info
page and got confused. He claims that using an AC adaptor (and
his power supply circuit) is better than using a battery. Help."
Dr. Clark is
adamant about battery power for safety, and I agree. The higher
output voltage is not an advantage either, according to Dr.
Clark's research: she specifies 5 to 10 volts. On page 15 of her
book, The Cure for All Diseases, Dr. Clark
testing showed it [the zapper effect] was not due to some unique
design, or special wave form produced by the device. It
was due to battery operation! Any positively
offset frequency kills all bacteria, viruses and parasites
simultaneously given sufficient voltage (5 to
10 volts), duration (seven minutes),
and frequency (anything from 10 Hz to 500,000
I think the reason
some like AC power is that it stops battery life complaints from
customers. We took a different route. We made the
Auto-Zap5 so efficient it goes a year and a half on two AA
batteries if used one hour a day. With ZERO
risk of AC shock! (The voltage convertor in the
AutoZap5 guarantees just over 9 volts.
I still take the herbal parasite cleanse if I have an Auto-Zap5?
Dr. Clark would of
course say "yes". You certainly may if you wish. The black
walnut tincture is good for clearing your gut quickly. With the
zapper alone it takes longer. If you have a serious concern, by
all means take the herbs as well.
kidney and liver cleanses safe if I'm zapping?
does the price include?
We include the
Auto-Zap5 generator unit with fresh AA batteriesy, sturdy
industrial wires, instructions and custom straps.
some "zappers" cheaper than the Auto-Zap5?
Because you get
what you pay for. The Auto-Zap5 is a fail-safe, fully automatic,
rugged, efficient unit with a 3 month 100% money-back
guarantee, and no hidden restocking or "refurbishing" charges.
It is a tested and guaranteed lifetime purchase, not a
give me a list of ailments/detoxifying/general health
maintenance for which this machine is suitable?
See Dr. Hulda
Clark's book, "The Cure for All Diseases," for a full listing.
Her basic conclusion is that the zapper is an excellent general
tonic and prophylactic (preventative) tool.
zapper like a Rife device?
No, the Rife "pad
type" devices do not "zap". MOST do not put out DC pulses like a
zapper. They work on the principle of bio-resonance, much like
the best time to zap?
Sometimes I put
the foot pads under my desk at the computer. If I am too busy in
the day, I grab the hand holds as I go to sleep, and hit the
Start button. Find a way that works well for you.
they let me through airport security with a zapper?
We always take our
Auto-Zap zappers along on trips, and have never had a problem.
You might want to put the unit in your checked bags, but I carry
it on. Lyn and I find the aluminum foil footpads convenient for
travel, as they are easy to pack and weigh almost nothing.
use the zapper while taking antibiotics?
Yes, it does not
Recently Dr. Hulda
Clark has announced that the effect of the zapper can be
intensified and targeted to specific parasites in specific
organs by "plate zapping." A box with one or two metal plates on
top is connected to the positive lead of the zapper, and slides
of the parasite and target organ are placed on the plates. See
the new "Prevention of All Cancers" and "Cure for HIV/AIDS"
books for more details. You can make your own plate box as
described in the HIV/AIDS book on page 517.
known pathogen was in a known body part, would it work better if
the hand-holds were nearer that body part instead of hands?
Dr. Clark's recent work suggests that the zapper effect
can be intensified or localized by "plate zapping" - see above.
recommend using damp paper towel around the hand holds, or to
hold them as they are?
Yes, please wrap
them as we instruct you. DO NOT hold the bare metal, as the
electrical signal could drive metal ions into the skin. Always
use at least two layers of paper towel.
hurt to put the hand-holds on other parts of the body instead of
using hands: is it as effective using it on arms, chest or
abdomen, legs or feet?
The effect seems
to be systemic via the bloodstream, but feel free to experiment.
Try to get at least four square inches of solid contact area on
each contact point to prevent skin irritation.
give full instructions re frequencies used for each health
frequency we use is all it takes. According to Dr. Hulda Clark's
latest research, the zapper stimulates the bloodstream and
immune system in a subtle way, enabling your own body to "take
out the trash", including parasites, bacteria and most viruses.
The pulses from the zapper do not electrocute anything, as they
are a safe low-voltage and low-current signal.
Does it actually destroy malaria or merely 'stun' it
for the body to remove normally?
See above. We have
had many units in the tropics, and two doctors with a Big-Zap in
India. Users say it has helped the body clear up and prevent
having metal anywhere in the body (such as crowns on one's
teeth) affect the benefits of using the zapper?
No, because the
zapper stimulates the bloodstream and immune system, according
to Dr. Clark's research.
there any long-term side effects from long-term electrical
current use on the body? One hears of clusters of child cancers
in areas close to major power lines, for instance.
None have been
observed or reported, as far as I know. Power line effects are
due to high strength alternating magnetic fields, while the
zapper uses very weak DC current pulses similar to natural nerve
impulses. The Auto-Zap has been used successfully with tots as
young as 1 month ( to deal with a nasty case of thrush in short
shiny copper pipes that you hold onto tarnished quite
quickly- is that normal? As well,
how often should you replace them?
last indefinitely. The tarnish or darkening is harmless, and
does not affect their effectiveness. You can remove it by
soaking the pipes in a cup of warm vinegar with a teaspoon
of salt in it. We never do that here, though.
What if the wire comes out of the plug that fits
into the Auto-Zap box?
The wire is
easy to re-attach without tools. Just unscrew the black
plastic sleeve and slide it back up the wire. If you cannot
see the silver-colored wire, cut back the black rubber
insulation to expose about 3/4" of wire. Then twist the end
of the wire together a bit and insert it through the hole in
the middle of the metal part and out the side. Push the wire
all the way in, and wrap the wire clockwise around the
groove on the metal part. Then slide the plastic sleeve back
over and screw it onto the metal plug as snugly as possible.
Huda Clark Zapper