Electromagnetic tattoo machines utilize a configuration of coils and a capacitor to control needle movement. These components work together to generate a pulsating electromagnetic field, drawing the armature bar down and subsequently releasing it, causing the attached needles to move in and out of the skin. A typical setup includes two main coils, a capacitor, an armature bar, needle bar, contact screw, and a spring.
These machines have been a cornerstone of the tattoo industry for decades, offering artists a robust and reliable tool for creating a wide variety of tattoo styles. Their enduring popularity stems from their adjustable power and consistent performance. The ability to fine-tune these machines allows artists to achieve precise needle depth and speed, crucial for achieving detailed work and consistent ink saturation. While newer technologies exist, electromagnetic machines remain relevant due to their familiarity, relatively simple maintenance, and distinctive feel, preferred by many experienced artists.