The Secret of a Durable Slayer Exciter – How to Make an Indestructible Slayer Exciter

How to build a homemade Tesla coil (slayer exciter) with protection (snubber RCD).
Have you ever noticed how mesmerizing it is to watch the air ionize and light up a fluorescent lamp in your hand without any wires connected?
Building a Tesla coil is almost a ritual for those who enjoy electronics and high voltage. The great magic of the Slayer Exciter lies in its elegance and simplicity. With just a handful of simple components, it does incredible things.
ℹ️ This video shows how to build a Slayer Exciter coil protected by an RCD snubber circuit.
Despite the elegance and simplicity of a slayer exciter, practical operation runs into a critical challenge in power electronics: switching inductive loads. The moment the transistor is turned off, the abrupt current variation generates a severe overvoltage surge on the components. Without proper protection, these voltage spikes exceed the transistor’s maximum operating limits, resulting in instant burnout.
Those who build a Slayer Exciter almost always suffer from the same problem: the transistor burns out in a few minutes.
To overcome this problem and ensure continuous and reliable operation, we will use a voltage clamping technique called an RCD snubber circuit.
This snubber circuit works by absorbing the energy from voltage spikes through a fast diode, temporarily storing it in a capacitor and subsequently dissipating it as heat through a resistor.
The RCD snubber has the crucial function of protecting the transistor against high voltage spikes caused by coil induction.
❓ Interesting fact: The heart of the Slayer Exciter is its self-oscillation system. Unlike complex circuits that need an integrated oscillator chip (like the famous 555) to dictate the rhythm, the Slayer Exciter uses the feedback from the secondary coil itself to tune to the correct resonant frequency.
The Feedback: The transistor base is directly connected to the bottom of the secondary coil. When the primary coil induces a high voltage in the secondary, a tiny fraction of that energy returns to the transistor base, “signaling” the exact moment to turn it on and off.
The secondary winding: (those hundreds of turns of thin enameled wire) is a fantastic manual job, but the end result of seeing the plasma coming out at the end of the wire makes up for every second spent rewinding.

Source: Watch on YouTube
Channel: MaxElectron
Views: 1,875
Duration: 5:40