A feedback signal 180° out of phase with an amplifier input signal. Used to increase amplifier stability, bandwidth and input impedance. Also reduces distortion.
A system where the negative terminal of the source is connected to the system's metal chassis.
An atom having a greater number of electrons in orbit than there are protons in the nucleus.
A resistance such that when the current through it increases the voltage drop across the resistance decreases.
negative temperature coefficient
A term used to describe a component whose resistance or capacitance decreases when temperature increases.
Glass envelope filled with neon gas which when ionized by an applied voltage will glow red.
Combination of interconnected components, circuits or systems.
A terminal, point or object with balanced charges. Neither positive or negative.
An atom in which the number of negative charges (electrons in orbit) is equal to the number of positive charges (protons in the nucleus).
The conductor of a polyphase circuit or a single-phase three wire circuit that is intended to have a ground potential. The potential difference between the neutral and each of the other conductors are approximately equal in magnitude and equally spaced in phase.
Subatomic particle in the nucleus of an atom and having no electrical charge.
A secondary cell that uses a nickel oxide positive electrode and a cadmium negative electrode.
Junction or branch point in a circuit.
Unwanted electromagnetic radiation within an electrical or mechanical system. An operational amplifier circuit having no phase inversion between the input and output.
The terminal on an operational amplifier that is identified by a plus sign.
A scale in which the divisions are not equally spaced.
Designation which states that the contacts of a switch or relay are closed or connected when at rest. When activated, the contacts open or separated.
Designation which states that the contacts of a switch or relay are normally open or not connected. When activated the contacts close or become connected.
Pole of a magnet out of which magnetic lines of force are assumed to originate.
Any network of voltage sources and resistors can be replace by a single current source in parallel with a single resistor.
A filter which blocks a narrow band of frequencies and passes all frequencies above and below the band.
A bipolar junction transistor in which a p-type base element is sandwiched between an n-type emitter and an n-type collector.
A semiconductor compound formed by doping an intrinsic semiconductor with a pentavalent element. An n-type material contains an excess of conduction band electrons.
Core of an atom. The nucleus contains both positive (protons) and neutral (neutrons) subatomic particles.