Tesla's Electric Car #2 - 01/09/98
This file was originally posted on the KeelyNet BBS on January 31, 1993 as
This file is a Sysop commentary on the Tesla Power Box as described in the
original file TESLAFE1.ASC on KeelyNet.
These are my own thoughts on the Tesla Power Box, I welcome your
constructive comments regarding this device......Jerry W. Decker/KeelyNet
The following are the details as removed from the file TESLAFE1 :
"The standard internal combustion engine was removed and an
80-H.P. 1800 r.p.m electric motor installed to the clutch and
The A.C. motor measured 40 inches long and 30 inches in
diameter and the power leads were left standing in the air -
no external power source!
He then went to a local radio store and purchased a handful of
tubes (12), wires and assorted resistors. A box measuring 24
inches long, 12 inches wide and 6 inches high was assembled
housing the circuit.
The box was placed on the front seat and had its wires
connected to the air-cooled, brushless motor. Two rods 1/4" in
diameter stuck out of the box about 3" in length."
The mention of this experiment in a local paper kind of blew me away but it
did give "some" detail of what was in this mysterious power box.
We know that T.H. Moray had probably the best known version of such a device.
In his case he used a special "valve" which appeared to be basically a
diode. Except this diode worked more like a Triac. That is, any
electrical wave, both positive AND negative going currents, was picked
up by an antenna and passed through this diode with minimal loss of energy.
As far as we know, this valve was based on a composite substance with
GERMANIUM as the host material.
From there it went through a tuned circuit based on vacuum tubes and
capacitors to build and discharge the energy as demanded by the load.
The tuned circuits were resonant with one or more earth or cosmic frequencies
and the vacuum tubes acted as harmonic constructive interference
amplifiers of the input signals.
We will note that Moray's resonant circuits used CAPACITORS, COILS and
RESISTORS. Experiments done during Moray's heyday showed an output up to
50,000 Watts of high frequency energy. It is believed that the energy was
high frequency because 100 watt light bulbs burned cool to the touch.
One other CRITICAL POINT about Moray's converter was that it would ONLY
energize RESISTIVE loads and NOT INDUCTIVE loads. This is because
inductive loads imply coils of wire which are heated more so by HYSTERESIS
(interferring electro-magnetic fields) rather than simple resistance from
the flow of current through molecular/atomic patterns.
This type of interferring field caused an energy backup and
subsequent de-tuning of Moray's generator. Since it was essentially a TUNED
device, it could not compensate for any frequency changes or distortions ONCE
TUNED. As a result, any attempt to hook up an inductive load would cause
the device to stop generating electrical energy. To restart it, all
inductive loading must be removed, the device re-tuned and restarted.
Moray also used an unusual mode of operation for a vacuum tube in that he
operated with a "cold cathode." This did not require a heated plate for
the "thermionic emissions" deemed necessary to successful vacuum tube
There is also mention of radioactive elements in the antenna circuit which
leads one to think he might have been tuning into the continual
radioactive decay processes of nature, rather than cosmic or earth energies.
Now to the Tesla Power Box
We will first of all note the use of an AC coil motor. This alone tells us
that the Tesla device was superior and not so dependent on tuning as was
Moray's machine which could only power RESISTIVE loads. All universal
energy moves in WAVES and so is essentially for alternating current (AC).
That is why Moray called his book "THE SEA OF ENERGY IN WHICH THE EARTH
FLOATS". The entire universe is continually bathed in these AC energies and
they cover the entire frequency spectrum.
What intrigues the hell out of me was how Tesla could use "off-the- shelf"
vacuum tubes and other components, put them together in the correct
configuration and make it work.
Another point we should note is the list of components :
NOTE, NO CAPACITORS! The wires could have been simply for
connection or wound as coils. The 1/4" rods were either BUS BARS for power
output taps OR more likely ANTENNAS! Resonant circuits can be constructed
using several techniques. You can achieve the same effect from :
- 1) 12 Vacuum Tubes (70L7-GT rectifier beam power tubes)
- 2) Wires
- 3) Assorted Resistors
- 4) 1/4" diameter rods 3" in length
So, in the case of the Tesla Power Box, he either wound his own coils or
simply used the wire to connect the resistors with the vacuum tubes. I
am of the opinion that he used the wire ONLY for connection and DID NOT USE
COILS! I also think he used a DIODE somewhere in the circuit in order to
tap ONLY one polarity.
We have no specifications for the AC motor that Tesla used in the auto, so
we have no idea if it was single or polyphase. In the case of a single phase
motor, it only requires a single winding which projects a magnetic field
that rotates according to the increase or decrease of the alternating
A polyphase (poly = two or more) motor uses multiple windings which are fed
by phased input currents that alternate in such a manner as to reinforce each
other. In the case of a 3 phase motor, the currents are phased 120
degrees apart. This gives much greater torque to the motor but requires 3
times the current because it uses 3 times the input energy.
Since the box powered an AC (coil) motor, it is probable it was TUNED to
one or more frequencies, most likely polyphased frequencies.
So, if the 3" long rods were in fact ANTENNAS, we can calculate
their frequency by using the following :
- 1) Resistors AND capacitors
- 2) Capacitors AND coils
- 3) Coils AND resistors
This would indicate the 3" rods (if they were truly 3" in length and
functioning as antennas) would resonate at 246 MHZ.
Because of the parts list description, I am of the opinion that it was a
DUAL circuit. That is, 6 vacuum tubes and one 1/4" diameter 3" rod along
with assorted resistors were to pick up and "pump" ONLY the positive going
signals, while the other 6 vacuum tubes, rod and resistors did the same for
the negative going signals. Such a scheme could either use PARALLEL or
SERIAL connections of the vacuum tubes. Since current conduction is
proportional to surface area, one would think that a parallel arrangement of
the 70L7-GT rectifier beam power tubes with all INPUTS connected to one antenna source and all
OUTPUTS connected to a common terminal attached to the load, would provide
for the MAXIMUM current flow from incoming energy waves.
The nature of these "energy waves" is the question here. Are they cosmic
rays, electrostatic, Schumann peaks, magnetic force, something
"other" or Aether flow into the neutral centers of mass as per Keely.
Vacuum tube construction takes several forms. Of these, the simplest
is two plates separated by a grid wire. When the bottom plate is heated,
thermally induced ions (thermionic emissions) are emitted by the bottom
plate. The grid can be biased by the application of voltage to
increase, decrease or halt the flow of these ions to the upper plate.
Other forms include more plates with more grids to allow better control
of the ion flow. By proper biasing, vacuum tubes can be operated as
switches, modulators or amplifiers among other uses.
Vacuum tubes operate primarily with high voltages that control the ion
flows. Modern transistors are equivalent to vacuum tubes except that they
operate using CURRENT instead of voltage. Transistors equate to Vacuum
tubes by the following comparisons :
(I cannot express Lambda here so we will use w for wavelength)
w = wavelength
v = velocity of propagation
f = signal frequency
a short example : w = v / f = wavelength in feet
w = 984,000,000/1,500,000 = 656 feet
f = 984,000,000/656 = 1,500,000 or 1.5 MHZ
3 inches * 4 = 1 foot
984,000,000/1 = 984,000,000
984,000,000/4 = 246,000,000 or 246 MHZ
Vacuum Tube Transistor Polarity
Operates from Voltage Current
lower plate emitter negative - cathode
grid base neutral
upper plate collector positive - anode
In the case of the Tesla Power Box, the vacuum tube appears to function
as a "pump", collecting incoming current in the form of ion intensification.
Once this "compressed" ion field reaches a certain density, the pump allows it
to be released into the next stage of the circuit, be it the actual load or
another vacuum tube.
So if the circuit is 6 vacuum tubes in parallel, all fed from a common
antenna, outputting to a common load terminal, then the common antenna
input would feed all vacuum tubes with the same wave. This would give the
greatest CURRENT accumulation because of the EXPANDED SURFACE AREA of the
Note, these vacuum tubes most likely operate in the "cold cathode" mode
since the heaters of the vacuum tubes were not fed by any outside
voltage to provide the heat for the more orthodox therionic emission.
If the vacuum tubes are hooked in series, then one "pump" would feed another
"pump" to get successively higher densities of electrons. This would give
higher VOLTAGES because of increased PRESSURE.
Keep in mind that electricity is much like air or water. We can think of
voltage as pounds per square inch (PSI) and current as cubic feet per
minute (CFM). That is PSI is pressure, CFM is flow.
Another analog is comparing a river to electricity. In such a
comparison, the speed of the river is the VOLTAGE or pressure while the width
of the river is the CURRENT or rate of flow.
Such a comparison shows WHY current requires THE GREATEST SURFACE AREA for
the maximum flow. Fuses function on just this principle, when the current
flows over the surface of the fuse, it creates heat. If too much
current flows, it creates too much heat causing the fuse to melt and separate.
The more surface area the fuse, the greater the amount of current can flow,
another reason to not place a penny in a fuse socket.
So we have two antennas (1/4" diameter, 3" long rods), two sets of 6 vacuum
tubes connected together by wire and assorted resistors. As the waves of
energy are collected by the 3" rods, positive on one, negative on another,
the energy builds up in the form of increased ions in each of the
paralleled vacuum tubes. As in Moray's generator, the circuit will feed
whatever load is attached as long as it does not EXCEED the current carrying
capacity of the circuit components. What we have is an energy pumping
I made a drawing of the box with some idea of the circuit. My
electronics knowledge is on IC's and transistors with almost nothing in regard
to vacuum tubes so there won't be much technical concept of the circuit per
se. Perhaps after some study, either I or someone else will come up with
some testable or useable circuits.
The Parallel Version
The Serial Version