basics of tesla coil · 2020. 12. 25. · sajjad haidar tesla coil: not an ordinary transformer...
TRANSCRIPT
![Page 1: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/1.jpg)
Basics of Tesla Coil
Make Your Own Tesla Coil
Sajjad Haidar
![Page 2: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/2.jpg)
Brief Theory
Principles of Operation
Design and Construction
Tests and Measurements
Sajjad Haidar
Sequence
![Page 3: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/3.jpg)
Theory: What you need
LTSpice
Download and use it for free
https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html
1. Knowledge of Basic LRC Circuit : Transient and AC Response
2. Circuit Analysis Software:
Sajjad Haidar
![Page 4: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/4.jpg)
Sajjad Haidar
Tesla Coil: Not an Ordinary Transformer
Tesla Coil
Low voltage ACVery High voltage AC
Uses two effects: Resonance and Coupling
Though it looks like a transformer, however not an ordinary one. Energy is transferred from
the primary to the secondary by carefully adjusting the coupling and the secondary is
tuned at resonance to achieve maximum voltage
![Page 5: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/5.jpg)
R
10 W
L
1mH
C
100 pF
I
A Simple LRC Series Circuit and Resonance
10V AC
Variable frequency
𝑧 = 𝑅2 + 𝜔𝐿 −1
𝜔𝐶
2
𝐼 =𝑉
𝑍
V
Frequency
Cu
rre
nt (I
)
𝜔𝐿 −1
𝜔𝐶= 0
At resonance:
𝐼 =𝑉
𝑅Sajjad Haidar
An inductor, a capacitor
and a resistor connected
in series with a 10V
variable frequency AC
source
Current
Impedance (z) of series LRC:
![Page 6: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/6.jpg)
Analysing The LRC Circuit with LTSpice
At resonance
ωL = 1/ωC
I=V/R
𝑧 = 𝑅2 + 𝜔𝐿 −1
𝜔𝐶
2
Sajjad Haidar
At resonance
![Page 7: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/7.jpg)
Voltage Across Capacitor
VC
VC
Vc = I/ωC
Lower the value of C Higher the voltage Vc
Sajjad Haidar
![Page 8: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/8.jpg)
10 V
Voltage Gain
VC
Simulation shows, voltage at the point
VC= 3kV
Supply voltage: 10 V
Gain: 3000/10 = 300
Sajjad Haidar
![Page 9: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/9.jpg)
AC Source Replaced by Transformer Coupling
Coupling Coefficient, K
10V
Closer: Tighter coupling, K
Maximum K = 1
Sajjad Haidar
![Page 10: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/10.jpg)
Simulation of a Coupled Circuit
10V
10 uH
Considering Primary-coil (L2) Inductance = 10 mH LTSpice
10 W is added to limit the current to 1 A
Coupling
Sajjad Haidar
![Page 11: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/11.jpg)
Instead of Source, Energy Supplied by Transformer Coupling
Our goal is to get maximum
voltage at the secondary
Coupling, K~0.1
Gives best result
For tighter coupling (K=1): Energy
is transferred to Secondary and part
of that comes back
For a loose Coupling: Very little
energy is transferred to the
secondary
~1600 V
Sajjad Haidar
![Page 12: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/12.jpg)
Important Points to Note
10V, 505 kHz
Vc=1600 V
At resonant frequency (~505 kHz),
voltage across Capacitor reaches
~1600 V. However, the source is only
10 V
Voltage gain = 1600V/10V = 160
10 uH
Sajjad Haidar
![Page 13: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/13.jpg)
Tesla Coil as a Tuned LCR Circuit
L
C
R
Top Load
Equivalent circuit of the secondary
coil. R and L are the resistance and
inductance of the coil.
Capacitance is introduced by the top
load and distributed capacitance of the
coil to ground
Sajjad Haidar
Prim
ary
![Page 14: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/14.jpg)
To Build a Successful Tesla Coil
1. Proper tuning to resonant frequency
2. Optimum Coupling (in our case , K = 0.1)
3. Low capacitance
Vc = I/ωC
CT
Vc
Lower the capacitance
Higher the voltage
4. If Top load is removed, capacitance
will be lower. However, resonant
frequency will go high. Component
choice and tuning is more difficult.
Power loss at the switching device will
go higher.
Sajjad Haidar
![Page 15: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/15.jpg)
19 cm
23.5 cm
11 cm
Primary Coil Construction
Primary Coil: Conical
Number of Turns, N=6
Wire Gauge: AWG #8
Larger diameter: 23.5 cm
Smaller diameter: 19 cm
Width: 11 cm
Calculated inductance: ~ 8.1 uH
https://coil32.net/online-calculators/conical-tesla-coil.html
Sajjad Haidar
![Page 16: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/16.jpg)
Primary Coil Construction
White acrylic sheet was used to
make the coil format.
A jigsaw was used to cut the
shapes and two-part epoxy was
used to join the parts.
Sajjad Haidar
![Page 17: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/17.jpg)
ABS PIPE 3 inches x 3 ft CELL CORE
3” x 2” ABS Reducing Coupling
Parts Used for Secondary Coil
4”X3” Adjustable Closet Flange Hub
As a coil Base
1.5” x 0.75” Bushing Adapter
These parts are bought from local
hardware store (Homedepot)
Copper wire is wound on this pipe
Sajjad Haidar
![Page 18: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/18.jpg)
Washer 2
Washer 1
Toroid
Secondary Coil Construction
AWG# 22 Wire wound on pipe
Diameter= 9.5 cm
Number of Turns, N2= 515
Length = 33.5 cm
Calculated Inductance, L2~ 6.4 mH
Measured: 6.7 mH
Sajjad Haidar
![Page 19: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/19.jpg)
Sajjad Haidar
Primary and Secondary Coil-Data at a Glance
![Page 20: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/20.jpg)
33.5
cm
Calculated Inductance, L2~ 6.4 mH
Measured: 6.7 mH
Secondary Coil and Tesla Coil Base
Equivalent Circuit
Distributed Capacitance
Sajjad Haidar
![Page 21: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/21.jpg)
Coil-base on a plexiglass plate
Tesla Secondary Coil : Photo
Sajjad Haidar
![Page 22: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/22.jpg)
Fle
xib
le A
lum
inum
Duct:
3 inch
x8 f
oot (E
xpanded)
Top Load Construction
Bent to for toroid
Aluminum sheet-disc
And foil tape is used
Calculating the capacitance
of a toroid:
D1: the major diameter of the D2: is the minor diameter of the ring of the toroid.
This formula is using inches for measurements. Result is in pF.
9.5
” D1 =9.5”
D2= 3”
C ~ 10.5 pF Sajjad Haidar
![Page 23: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/23.jpg)
Tesla Coil with Top Load
Calculated top load capacitance:
CT= 10.5 pF
Sajjad Haidar
![Page 24: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/24.jpg)
Experimental Determination of Resonant Frequency
Vc
Function generator
> 1 foot
Frequency (Hz)
Voltage (
V)
Resonant Frequency (fr)
Sajjad Haidar
![Page 25: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/25.jpg)
Experimental Setup to Determine the Resonance-Frequency
Resonant frequency found: 460 kHz
Inductance of the secondary coil: 6.7 mH
𝑓𝑟 =1
2𝜋 𝐿𝐶
Which gives, C ~ 18 pF
Distributed capacitance of the coil:
𝐶𝐷 = 𝐶 − 𝐶𝑇 = 18 − 10.5 = 7.5 𝑝𝐹
Sajjad Haidar
![Page 26: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/26.jpg)
Equivalent Circuit Simulation in LTSpice
Primary inductance, L1 = 8 uH + connecting wire
inductance ~2 uH, L1 ~10 uH
To protect the main switching circuit
(MOSFET) a series resistance (~5
Ohm) is used. R1 ~ 5
VT
Sajjad Haidar
![Page 27: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/27.jpg)
Simulation Result
VT
~47 kV
Sajjad Haidar
Voltage gain
47 kV
48 V
~1000
![Page 28: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/28.jpg)
Practical Tesla Coil Driver Circuits
Driver Circuit
Self Tuned Manually Tuned
Part of secondary coil signal
is fed back to the driver
circuit to maintain oscillation
at the resonant frequency
Tuneable oscillator drives a
half or full bridge, the output of
the bridge drives the primary
Difficult to tune, as resonance
changes for various reasonsTuned by itself
Tried bothSajjad Haidar
![Page 29: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/29.jpg)
Simulation: Simple Slayer Exciter Circuit to Test the Tesla Coil
Top Load
Prim
ary
Coil,
L1
Se
condary
Coil,
L2
Sajjad Haidar
![Page 30: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/30.jpg)
Simple Slayer Exciter Circuit to Test the Tesla Coil
Simulation Result13 kV
Oscillation Frequency
455 kHz
Sajjad Haidar
![Page 31: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/31.jpg)
Top Load
15V
13 kV
Simulated Tesla Coil Voltage
Supply voltage
15V DC
Top load Voltage
13 kV AC
We are getting 13 kV (!) with this simple circuit
Sajjad Haidar
![Page 32: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/32.jpg)
Test of the Simple Slayer Exciter Circuit
Slayer exciter circuitSajjad Haidar
![Page 33: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/33.jpg)
Sajjad Haidar
![Page 34: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/34.jpg)
Prim
ary
Co
il, L
1
Se
condary
Coil,
L2
To Achieve Higher Voltage (Bigger Arc) Modified Circuit is Used
Sajjad Haidar
MOSFET Q4 in Class-E mode
![Page 35: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/35.jpg)
F-271U
Primary: 115V Ac
Secondary: CT, 40V, 2A
Power 80 VA
110V DC Power Supply for Tesla Coil
Sajjad Haidar
![Page 36: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/36.jpg)
Sajjad Haidar
Class-E MOSFET Slayer Exciter Circuit, Driving Voltage: 110V DC
![Page 37: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/37.jpg)
https://www.youtube.com/watch?v=U2
QSbAbUgPc&feature=youtu.be
Rotating Ionic Propulsion with Tesla Coil
A copper-wire is bent to form a structure as shown and placed on top
of the top load. A small counter-balanced is placed to have a good
balance
Sajjad Haidar
![Page 38: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/38.jpg)
https://www.youtube.com/watch?v=VQNjBilo0
aY&feature=youtu.be
Sajjad Haidar
![Page 39: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/39.jpg)
Tesla Coil with Jacob’s Ladder
A pair of steel-wire is bent as
shown to form a Jacob’s ladder.
One terminal is connected to the
ground and the other to the top
load. Arcing starts from the
bottom and reaches the top.
Cycle begins
Sajjad Haidar
![Page 40: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/40.jpg)
https://www.youtube.com/watch?v=ZH
ksr7DKXZ4&feature=youtu.be
Photo and Video-link of the Tesla coil Connected to the Jacob’s Ladder
Sajjad Haidar
![Page 41: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/41.jpg)
https://www.youtube.com/watch?v=nxPptbAT3AE&feature
=youtu.be
Tesla coil without the Top Load
Sajjad Haidar
![Page 42: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/42.jpg)
Manually Tuned Tesla Coil Driver
Secondary
Coil,
L2
Fine Tune
Coarse Tune
+110V
Sajjad Haidar
![Page 43: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/43.jpg)
Sajjad Haidar
Practical Half-Bridge Driver
Using this half-bridge driver circuit shows
similar kind of effect as that of the class-
E Slayer exciter circuit. However, difficult
to tune. Tuning is achieved by two knobs:
coarse and finetuning
![Page 44: Basics of Tesla Coil · 2020. 12. 25. · Sajjad Haidar Tesla Coil: Not an Ordinary Transformer Tesla Coil Low voltage AC Very High voltage AC Uses two effects: Resonance and Coupling](https://reader037.vdocuments.mx/reader037/viewer/2022100215/60b02e3bb7694759931ca7b2/html5/thumbnails/44.jpg)
Sajjad Haidar
Reference
Best: lot of workable practical examples
https://www.stevehv.4hv.org/SSTCindex.htm