Hello, Gill
I have seen your “single 9V battery unit”
Good work, again!

> “I am thinking of doing up to 4 frequency selector unit. That should put the frequency question to rest.”
Even a 200 frequency zapper will not put the frequency question at rest, as long as the frequency role in a zapper will be misunderstood.

For experimenting the role of frequency on a zapper, you could build one with
= 30kHz (best transfer and a good reference to compare other frequencies)
= 10kHz (healing frequency used by Rife’s school, and still a very good transfer)
= 2.5kHz for its popularity
= 1.0kHz for zappicator’s use
= 15Hz to experiment how good it could be compared to 30kHz.

But any frequency of your choice will do.

An interesting point used on the M.Zap3, is a duty cycle as long as zapper’s effect permits it.

It has been implemented in the Ultimated Zapper with an horrible explanation of its “penetrating power”, but long duty cycle has good advantages.

If you have a 555 version, it will be easy to implement with only one frequency, but with many, it will be an interesting challenge.

Because you have the freedom of choice for your components, use a multiturn trim pot (Multi turn potentiometers are very expensive) on your zapper, “à la M.Zap4R fashion”. Many more experiments with different frequencies will be available.

I will contact you for our eMail and will be glad to help, if help is needed.

I have been surfing around Medikzap, Medi-Flowery and the 2 studies you point to.
There is very little information on what is so special about Medikzap. It seems to work with a microcontroller (4 programs).

Any zapper with a 555 and a square wave is “rich in harmonics”

> “with a rich spectrum of harmonic components above 1MHz”
I miss this part on the readings.
As stated by h. Clark (our best reference source so far), parasites as we define them, have a frequency band from around 77kHz to around 878kHz.
Human range is from 1500kHz to 9500kHz.

A 555 has an upper frequency of 500kHz to 800kHz, depending on source. This is an excellent choice for a zapper.

If you go higher than 1MHz, you are going too close to human lower end band.
Be careful on your experiments if you go so high.

> “Perhaps zapper just needs bit more juice”
Cranking up the voltage on a zapper is to be used with caution.
If you go higher than 12V, a zapper becomes quickly unpleasant to use, and small skin burns can be an easy result.

Do not compare Beck “high voltage” zapper with Clark “Low voltage zapper”.
What makes a zapper efficient is current at destination, not voltage at the source.

> “I think two 555 chips with two input sources 9V creating 30KHz and 1.5V creating 1MHz should accomplish this, just join the output from these two chips at plus handle. (I'm not sure if this would work as we have to return 10.5V at negative side of both batteries. I never done this so I do not know if it is feasible.)”
Connecting the output of two 555 chips is easy to do : Use a 1k_ohm resistor at the output of each 555, and join them to the output of the zapper. Each 1k_Ohm will protect its 555 from being short circuited by the other one.
Wave form will be mixed at the junction point.
I’m very skeptical about the end result, as you expect it, but…
First time I heard about a zapper, I was even more skeptical on any result at all …

Have lots of phone with your project!

hi gill i like your work. i've only just started looking in to this it's very interesting. i just wanted to message regarding the harmonic frequencies. you do not need to create them they are created automatically as an effect of connecting a load to an alternating current you get frequencies develop that are multiples of the original frequency so if the original is 30khz you'll get 3x30khz 90khz
5x30khz 150khz
9x30khz 270khz and so on its quite in depth. perhaps research "harmonics in electrical power"