electronics, cathode bias (also known as self-bias, or automatic bias) is a technique used with vacuum tubes to make the direct current (dc) cathode voltage...
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A cathode is the electrode from which a conventional current leaves a polarized electrical device such as a lead-acid battery. This definition can be...
24 KB (2,877 words) - 19:49, 28 August 2024
appropriate voltage source. Cathode bias (self-bias, automatic bias) - The voltage drop across a resistor in series with the cathode is utilized. The grid circuit...
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A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a...
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Vacuum tube (redirect from Indirectly heated cathode)
isolated from their cathodes, used cathode biasing, avoiding the need for a separate negative power supply. For cathode biasing, a relatively low-value...
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of the bias voltage, corresponding to an unmodulated carrier peak voltage of half the bias voltage magnitude. Either fixed bias or cathode bias may be...
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Fluorescent lamp (redirect from Cold-cathode fluorescent lamp)
as hot cathodes. However, cold cathode tubes have cathodes that emit electrons only due to the large voltage between the electrodes. The cathodes will be...
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be avoided with the use of RF sputtering where the sign of the anode-cathode bias is varied at a high rate (commonly 13.56 MHz). RF sputtering works well...
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Diode (section Reverse bias)
with two electrodes, a heated cathode and a plate, in which electrons can flow in only one direction, from the cathode the to plate. Among many uses,...
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P–n junction (redirect from Reverse bias)
the positive terminal corresponds to reverse bias. If a diode is reverse-biased, the voltage at the cathode is comparatively higher than at the anode. Therefore...
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heater supply via a 220 ohm resistor or from the audio output valve's cathode bias. Some reel-to-reel tape recorders also used the DM70/DM71 to indicate...
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P–n diode (redirect from Forward bias)
both adapted to increase the voltage the devices can withstand in reverse bias. The top structure uses a mesa to avoid a sharp curvature of the p+-region...
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Glow discharge (redirect from Cathode fall)
discharges are used as a source of light in devices such as neon lights, cold cathode fluorescent lamps and plasma-screen televisions. Analyzing the light produced...
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control the electron flow from the heated cathode to the positively charged anode Tape bias (also AC bias), a high-frequency signal (generally from 40...
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Nimo tube (category Cathode ray tube)
the anode and also required 1.1 volts for the filaments, as well as a cathode bias for the filaments that enables or disables the display of a character...
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designed to generate 26 watts at an 8-ohm impedance load, and offered a cathode-based bias.[citation needed] From 1952 through the spring of 1954, Fender produced...
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Solid-state battery (section Cathode)
can use metallic lithium for the anode and oxides or sulfides for the cathode, increasing energy density. The solid electrolyte acts as an ideal separator...
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the preamplifier section; the power amplifier section used a single cathode-biased 6V6 beam power tetrode necessarily in Class A operation. The amplifier...
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introduced in the summer of 1955 with a rated power output of 15 watts, cathode bias, two 6V6 output tubes, and a 5Y3 tube rectifier. The Tremolux was the...
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Master Volume knob, a Standby and a Power Switch, switchable cathode bias (Output Bias switch: "50 Hot": 33W at full power, "82 Warm": 22W at low power)...
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or more in high-fidelity equipment. Grid bias is most often provided by a cathode resistor. If the cathode resistor is unbypassed, negative feedback...
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6V6GT power tubes remained the same, although the bias structure was changed from cathode to fixed biasing, bringing the output power up to around 20 watts...
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filament or Lanthanum hexaboride (LaB6) hot cathode with a V-shaped (or otherwise pointed) tip. This bias voltage creates a repulsive electrostatic field...
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the cathode with no voltage applied at the gate, junctions J1 and J3 are forward biased, while junction J2 is reverse biased. As J2 is reverse biased, no...
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or cathode if operated beyond manufacturer specifications. In a power scaling circuit, by decreasing just the B+ plate voltage, the cathode bias and...
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Differential amplifier (section Symmetrical feedback network eliminates common-mode gain and common-mode bias)
maximum gain. Bias stability and independence from variations in device parameters can be improved by negative feedback introduced via cathode/emitter resistors...
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junction J1and J3 are forward-biased, while J2 is reverse-biased, allowing only a small leakage current from the anode to the cathode. When the applied voltage...
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Electrodynamic tether (section Thermionic cathode (TC))
emissive tip and the positively biased structure drawing the electrons out. Typical constants for Spindt type cathodes include: AFN = 3.14 x 10-8 A/V2...
69 KB (9,669 words) - 17:00, 9 June 2024
indirectly heated cathode or to the negative end of a directly heated cathode, negative initial velocity grid bias is produced relative to the cathode determined...
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12AX7A Preamp Valve/Tube 1 × EL84 Power Valve/Tube Single-Ended Class A Cathode Bias Design Solid State Diode Rectified Weight: 20.9 lb (9.5 kg) Dimensions:...
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