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design_review
design_review

... are basically electromagnets: they are made of a big coil of copper wire with an armature (a slug of metal) in the middle. When the coil is energized, the slug is pulled into the center of the coil. This makes the solenoid able to pull from one end. Normally the lock is active so you can't open the ...
Precision Low Dropout Linear Controllers (Rev. A)
Precision Low Dropout Linear Controllers (Rev. A)

... fault conditions. When the load current reaches an accurately programmed threshold, a gated-astable timer is enabled, which switches the regulator’s pass device off and on at an externally programmable duty-ratio. During the on-time of the pass element, the output current is limited to a value sligh ...
LM2575
LM2575

IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

Troubleshooting Techniques
Troubleshooting Techniques

... possibility is that the IC is bad. Verify that the reference voltage is correct. If the reference voltage is okay, and if it is possible to force the comparator into the alternate state, then the comparator is okay, and the likely problem is with the input signal. ...
Differential Voltage Probe
Differential Voltage Probe

... The output of this system is linear with respect to the measurement it is making. As mentioned before, the amplifier allows you to measure positive and negative voltages on any of our interfaces. Since many lab interfaces can read voltages only in the range of 0 to 5 volts, the amplifier offsets and ...
P220 Planar Magnetics For 1 kW to 3.0 kW Converters
P220 Planar Magnetics For 1 kW to 3.0 kW Converters

MIL EMI and Transient Solutions
MIL EMI and Transient Solutions

ijser.org - Sudan University of Science and Technology
ijser.org - Sudan University of Science and Technology

... grid, store it in a battery, and release it to the power device. The charger must be fully adapted to the battery to prevent battery from damage. The charger system needs to work with any kind of electric [2-5]. The design of an outlet battery charger is not as simple as connect the battery straight ...
Auxiliary coil and exciter equipped with permanent magnets
Auxiliary coil and exciter equipped with permanent magnets

SIRComm® MiniSIR2® 115.2kbps IrDA®1.0 Transceiver Module
SIRComm® MiniSIR2® 115.2kbps IrDA®1.0 Transceiver Module

e-beam
e-beam

... power supply is interlocked to prevent high voltage if pressure is too high ...
LS245 data sheet
LS245 data sheet

... † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to ...
QS5U21
QS5U21

Energy Harvesting Devices for High Voltage Transmission Line
Energy Harvesting Devices for High Voltage Transmission Line

... With different voltage levels and different power transmission capability, not only the height of the conductor will change, the line structure and conductor parameters will also change a lot. For example, at some 230 kV and above transmission lines, a bundle conductor is usually used. And depending ...
How To Configure a 555 Timer IC
How To Configure a 555 Timer IC

SECTION 13 - Voltage Multipliers, Inc.
SECTION 13 - Voltage Multipliers, Inc.

... subjected to higher voltage stress at higher output currents. For higher current ratings, it is important to insure that the diodes' junction temperature does not exceed 125°C. A thermal analysis may be necessary to evaluate junction temperature. Typically, for output currents less than 1.0mA, the p ...
AN-7019 Limiting Cross-Conduction Current in Synchronous Buck Converter Designs
AN-7019 Limiting Cross-Conduction Current in Synchronous Buck Converter Designs

... when the HS MOSFET turns off causing no shoot through. Figure 9 shows the gate-ground voltage in the case of 10nS rise time. When compared to Figure 5 (left) showing the gate-source voltage under identical conditions, it becomes evident that measuring the gate-ground voltage of 2.5 Volt and predicti ...
Redundant safety features in a high-channel-count retinal neurostimulator Shawn K. Kelly
Redundant safety features in a high-channel-count retinal neurostimulator Shawn K. Kelly

... enabled a patient to read large text one week after implantation [5]. The Retina Implant device uses 1500 non-configurable photodiode-electrode pixels, with wires delivering power to the chip. Our group performed short-term retinal stimulation trials on six blind volunteers between 1998 and 2000, sh ...
CAPACITOR VARABILITY
CAPACITOR VARABILITY

... • Uses polysilicon for both plates separated by oxide • Using a nitride layer results in higher capacitance values • Large plate area oxide capacitor useful for matching capacitors • Low voltage modulation ...
e-beam
e-beam

EVBUM2049/D - 1476.0 KB
EVBUM2049/D - 1476.0 KB

... (DRE) that increases the loop gain by an order of magnitude when the output voltage goes below 95.5% of its nominal level. This function dramatically reduces undershoots in case of an abrupt increase of the load demand. As an example, Figure 15a illustrates a load step from 100 to 400 mA (2-A/ms slo ...
ICL7665 Microprocessor Voltage Monitor with Dual Over/Undervoltage Detection _______________General Description
ICL7665 Microprocessor Voltage Monitor with Dual Over/Undervoltage Detection _______________General Description

... ICL7665 combines a 1.3V reference with two comparators, two open-drain N-channel outputs, and two open-drain P-channel hysteresis outputs. The reference and comparator are very low-power linear CMOS circuits, with a total operating current of 10µA maximum, 3µA typical. The N-channel outputs can sink ...
*Siemens AG, Corporate Technology, D-81730 Muenchen, Germany, e-mail:
*Siemens AG, Corporate Technology, D-81730 Muenchen, Germany, e-mail:

... The purpose of this work is to investigate theoretically the potential of thermionic vacuum devices with additional electron field emission due to non planar electrodes for cooling applications. Because of the high work function of metals, thermionic electron emission (i.e. by thermal excitation of ...
ECE 310 - University of Illinois at Urbana–Champaign
ECE 310 - University of Illinois at Urbana–Champaign

... Grounding, cont’d ...
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Triode



A triode is an electronic amplifying vacuum tube (or valve in British English) consisting of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode). Invented in 1906 by Lee De Forest by adding a grid to the Fleming valve, the triode was the first electronic amplification device and the ancestor of other types of vacuum tubes such as the tetrode and pentode. Its invention founded the electronics age, making possible amplified radio technology and long-distance telephony. Triodes were widely used in consumer electronics devices such as radios and televisions until the 1970s, when transistors replaced them. Today, their main remaining use is in high-power RF amplifiers in radio transmitters and industrial RF heating devices. The word is derived from the Greek τρίοδος, tríodos, from tri- (three) and hodós (road, way), originally meaning the place where three roads meet.
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