biasing impedance
21Common base — Figure 1: Basic NPN common base circuit (neglecting biasing details). In electronics, a common base (also known as grounded base) amplifier is one of three basic single stage bipolar junction transistor (BJT) amplifier topologies, typically used… …
22Tube sound — (or valve sound) is the characteristic sound associated with a vacuum tube based audio amplifiers. Some audiophiles prefer the sound that is produced by the distortion characteristics of tube based amplifiers. The audible significance of tube… …
23Current-feedback operational amplifier — Representative schematic of a current feedback op amp or amplifier. The current feedback operational amplifier otherwise known as CfoA or CfA is a type of electronic amplifier whose inverting input is sensitive to current, rather than to voltage… …
24Pierce oscillator — The Pierce oscillator is a type of electronic oscillator circuit particularly well suited for implementing crystal oscillator circuits. Named for its inventor, George W. Pierce (1872 1956), the Pierce oscillator is a derivative of the Colpitts… …
25Active load — An active or dynamic load is a component or a circuit behaving as a current stable nonlinear resistor. This term may refer to a component of circuit design, or to a type of test equipment. Contents 1 Circuit design 1.1 Common base example 1.2… …
26THD Electronics — Infobox Company company name=THD Electronics, Ltd. company logo= company slogan= Any Tube, Any Tone, Anytime. vector logo= company type=Private genre= foundation=1986 founder=Andrew Marshall location= Seattle, Washington, USA origins= key people …
27Common drain — In electronics, a common drain amplifier, also known as a source follower, is one of three basic single stage field effect transistor (FET) amplifier topologies, typically used as a voltage buffer. In this circuit the gate terminal of the… …
28Antique radio — DIORA AGA RSZ 50 ca.1947 from Poland An antique radio is a radio receiving set that is collectible because of its age and rarity. Although collectors may differ on the cutoff dates, most would use 50 years old, or the pre World War II Era, for… …
29Tetrode — A tetrode is an electronic device having four active electrodes. The term most commonly applies to a two grid vacuum tube. It has the three electrodes of a triode and an additional screen grid which significantly changes its behaviour. Grids The… …
30Electronic engineering — is a discipline dealing with the behavior and effects of electrons (as in electron tubes and transistors) and with electronic devices, systems, or equipment.The term now also covers a large part of electrical engineering degree courses as studied …
