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2SC3838K
2SC3838K

... Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no respo ...
A Monotonic Digitally Programmable Delay Element for Low Power
A Monotonic Digitally Programmable Delay Element for Low Power

... current starved inverters was proposed and shown in Figure 4. NMOS control transistors, Mn0, Mn1, Mn2,are connected to the source of M1 and PMOScontroltransistors,Mp0,Mp1,Mp2,…,are connected to the source of M2. By an input code, the rising/falling edge can be controlled accordingly. However, due to ...
AP2331  0.2A SINGLE CHANNEL CURRENT-LIMITED LOAD SWITCH Description
AP2331 0.2A SINGLE CHANNEL CURRENT-LIMITED LOAD SWITCH Description

... An internal sensing FET is employed to check for over current conditions. Unlike current-sense resistors, sense FETs do not increase the series resistance of the current path. When an over current condition is detected, the device maintains a constant output current and reduces the output voltage ac ...
MAX1878 Dual-Output Step-Down and LCD Step-Up Power Supply for PDAs General Description
MAX1878 Dual-Output Step-Down and LCD Step-Up Power Supply for PDAs General Description

LTC1435 - High Efficiency Low Noise Synchronous Step
LTC1435 - High Efficiency Low Noise Synchronous Step

40 V to 400 V Uni-directional Current/Voltage/Power Monitoring
40 V to 400 V Uni-directional Current/Voltage/Power Monitoring

Control of DPGS Under Grid Faults
Control of DPGS Under Grid Faults

...  Two requirements can be defined for WTS during grid fault: to remain connected even during severe under-voltage to control reactive power to support the grid voltage ...
MP20075 - Monolithic Power System
MP20075 - Monolithic Power System

pdf - Journal List - Academic Journals Database
pdf - Journal List - Academic Journals Database

... Ultracapacitor usually use as a short-term duration electrical energy storage because it has several advantages, like high power density (5kW/kg), long lifecycle and very good charge/discharge efficiency. Unlike batteries, ultracapacitors may be charged and discharged at similar rates. This is very ...
PAM2306 Description Features Pin Assignments Applications
PAM2306 Description Features Pin Assignments Applications

... excellent stability and transient response. To ensure the longest battery life in portable applications, the PAM2306 provides a power saving Pulse-Skipping Modulation (PSM) mode to reduce quiescent current under light load operation. The PAM2306 supports a range of input voltages from 2.5V to 5.5V, ...
AND8461/D Design of a 65 W Adapter Utilizing the NCP1237 PWM Controller
AND8461/D Design of a 65 W Adapter Utilizing the NCP1237 PWM Controller

... When focusing on the light load efficiency of adapter design, the key losses need to be identified. Switching losses play a major role in determining the light load efficiency, and are directly linked to the control methodology. These losses are caused by the energy stored in the sum of all capacita ...
MAX16815/MAX16828 High-Voltage, 100mA/200mA Adjustable Linear High-Brightness LED Drivers with PWM Dimming General Description
MAX16815/MAX16828 High-Voltage, 100mA/200mA Adjustable Linear High-Brightness LED Drivers with PWM Dimming General Description

... junction temperature exceeds TJ = +159°C (typ), the internal thermal-protection circuitry turns off the series pass device. The MAX16815/MAX16828 recover from thermal-shutdown mode once the junction temperature drops by 24°C (typ). The devices therefore protect themselves by thermal cycling in the e ...
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... IDQ and VDQ are the DC diode current and voltage respectively. ...
T N UC
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... To remove the potential of incorrect connection of the power supply damaging the lamp’s LEDs, many systems use some form of reverse polarity protection. One solution for reverse input polarity protection is to simply use a diode with a low VF in-line with the driver/LED combination. The low VF incre ...
MAX9123 Quad LVDS Line Driver with Flow-Through Pinout General Description
MAX9123 Quad LVDS Line Driver with Flow-Through Pinout General Description

... length of the traces. Excessive skew can result in a degradation of magnetic field cancellation. Maintain the distance between the differential traces to avoid discontinuities in differential impedance. Avoid 90° turns and minimize the number of vias to further prevent impedance discontinuities. ...
Fuses vs Fuseless Technology
Fuses vs Fuseless Technology

... Protection whether by fuse, circuit breaker or relay cannot prevent faults from happening. Only good design, high quality components, careful installation, preventative maintenance along with good working practices can prevent major faults However, protection devices can limit the damage and inconve ...
auto transformer
auto transformer

... As such, there is no primary or secondary. Any two points on the winding can be connected to the supply and likewise a load may be connected across any two points. A minimum of two voltage taps are required for an auto-transformer to perform a useful task. An auto-transformer does not provide elect ...
S8VK-G (15/30/60/120/240/480-W Models)
S8VK-G (15/30/60/120/240/480-W Models)

... *1. Do not use an inverter output for the Power Supply. Inverters with an output frequency of 50/60 Hz are available, but the rise in the internal temperature of the Power Supply may result in ignition or burning. *2. For a cold start at 25°C. Refer to Engineering Data on page 11 for details. *3. If ...
X-ray Production, X-ray Tubes and Generators – Chapter 5
X-ray Production, X-ray Tubes and Generators – Chapter 5

... The filament current determines the filament temperature and thus the rate of thermionic emission When no voltage is applied b/w the cathode and anode, an electron cloud, also called a space charge cloud, builds around the filament This space charge cloud shields the electric field for tube voltages ...
BDTIC www.BDTIC.com/infineon Driving Mid Power LEDs from
BDTIC www.BDTIC.com/infineon Driving Mid Power LEDs from

... driven by BCR320U to have a typical driving current of 150mA. By selecting the value of external resistor, the LED’s current can be adjusted up to maximum of 250mA. The schematic of the light strip is shown in Figure 2. This OSRAM light strip are power up by a +24V supply. It will light up 6 LEDs in ...
Shielded Metal Arc Welding (SMAW) - Part A
Shielded Metal Arc Welding (SMAW) - Part A

...  positioning the object being welded on so it is in contact with the earth,  using a lower current setting and/or  wrapping the ground cable around the pipe a few times, as in pipe line welding. If that is not successful, wrap it in the opposite direction. ...
MOSFETS SOT-323 Plastic-Encapsulate  2SK3018
MOSFETS SOT-323 Plastic-Encapsulate 2SK3018

... JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD ...
Aalborg Universitet Low-Voltage Ride Through
Aalborg Universitet Low-Voltage Ride Through

MAX16814 Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller EVALUATION KIT AVAILABLE
MAX16814 Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller EVALUATION KIT AVAILABLE

LM4250 数据资料 dataSheet 下载
LM4250 数据资料 dataSheet 下载

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
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Mercury-arc valve



A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.
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