Circuit design follows the same lines for all electronic circuits. Its purpose was to protect lighting circuit wiring from accidental short circuits and overloads. Transformers are used to change the voltage levels in alternating current (AC) transmission circuits. Piezoelectric resonators are sold as separate components for use in crystal oscillator circuits. RLC circuits have many applications as oscillator circuits. Digital recreation of several Mesa Boogie amplifier circuits plus control circuits. They are used in many different types of oscillator circuits. Ohm's law is one of the basic equations used in the analysis of electrical circuits. Simple diode circuits, clipping, clamping, rectifier. The decibel originates from methods used to quantify signal loss in telegraph and telephone circuits. The two segments participate in distinct neural circuits. Many common digital electronic circuits employ positive feedback. Silicon is a critical element for fabricating most electronic circuits. Brownouts can cause unexpected behaviour in systems with digital control circuits. This leads to transmission modes other than the usual TEM mode found in conductive circuits.