Safe Operating Area for 1200-V Nonlatchup Bipolar
... Fig. 4. Typical trade-off characteristics for 1200-V nonlatchup devices. 2 5 - ~ sgate pulses were applied to the device. During the even dynamic parastic thyristor latchup never occurs for gate on-pulse, the devices were driven to stay in the curany condition if junction temperature iskept below 15 ...
... Fig. 4. Typical trade-off characteristics for 1200-V nonlatchup devices. 2 5 - ~ sgate pulses were applied to the device. During the even dynamic parastic thyristor latchup never occurs for gate on-pulse, the devices were driven to stay in the curany condition if junction temperature iskept below 15 ...
Temperature Monitor Specifications (A6630)
... The A6630 Temperature Monitor is designed for extremely high reliability for the plant's most critical rotating machinery. This 1-slot mult-channel monitor is used together with other CSI 6500 monitors to build a complete API 670 machinery protection monitor. Applications include steam, gas, compres ...
... The A6630 Temperature Monitor is designed for extremely high reliability for the plant's most critical rotating machinery. This 1-slot mult-channel monitor is used together with other CSI 6500 monitors to build a complete API 670 machinery protection monitor. Applications include steam, gas, compres ...
Bipolar Junction Transistors (BJT)
... General configuration and definitions The transistor is the main building block “element” of electronics. It is a semiconductor device and it comes in two general types: the Bipolar Junction Transistor (BJT) and the Field Effect Transistor (FET). Here we will describe the system characteristics of t ...
... General configuration and definitions The transistor is the main building block “element” of electronics. It is a semiconductor device and it comes in two general types: the Bipolar Junction Transistor (BJT) and the Field Effect Transistor (FET). Here we will describe the system characteristics of t ...
What is burn-out thermocouple? The thermocouple burn
... The thermocouple burn-out function is mostly used in a temperature control system with a thermocouple input. If the thermocouple burns out, the controller loses the input signal. This is equivalent to the measured temperature becoming very low. Then, the controller responds by trying to increase the ...
... The thermocouple burn-out function is mostly used in a temperature control system with a thermocouple input. If the thermocouple burns out, the controller loses the input signal. This is equivalent to the measured temperature becoming very low. Then, the controller responds by trying to increase the ...
Measurement accuracy and stability over time and temperatue
... Since the gain of the instrumentation amplifier is set by the resistor ratio RFB /RIN, resistor temperature drift and instability create gain errors and ultimately limit system accuracy. Even with perfectly matched resistors, board-level environmental conditions may force the resistors to different ...
... Since the gain of the instrumentation amplifier is set by the resistor ratio RFB /RIN, resistor temperature drift and instability create gain errors and ultimately limit system accuracy. Even with perfectly matched resistors, board-level environmental conditions may force the resistors to different ...
DLD101 Features Mechanical Data
... Figure 12 shows a typical application circuit diagram for driving an LED or string of LEDs. Note that the pre-biased transistor (Q2) has the option of bypassing the series base resistor by connecting directly to pin 7. The N-MOSFET (Q1) is configured as a VBE referenced current sink and is biased on ...
... Figure 12 shows a typical application circuit diagram for driving an LED or string of LEDs. Note that the pre-biased transistor (Q2) has the option of bypassing the series base resistor by connecting directly to pin 7. The N-MOSFET (Q1) is configured as a VBE referenced current sink and is biased on ...
Why true-rms?
... wave shape. In electrical terms, the ac rms value is equivalent to the dc heating value of a particular waveform—voltage or current. For example, if a resistive heating element in an electric furnace is rated at 15 kW of heat at 240 V ac rms, then we would get the same amount of heat if we applied 2 ...
... wave shape. In electrical terms, the ac rms value is equivalent to the dc heating value of a particular waveform—voltage or current. For example, if a resistive heating element in an electric furnace is rated at 15 kW of heat at 240 V ac rms, then we would get the same amount of heat if we applied 2 ...
Lab 1: Expansion of gases
... this injection happens at the moment when the piston is at the upper dead centre, i.e. when the cylinder volume is smallest. Because of the strongly compressed air, the mixture is so hot (ca. 800°C), that it ignites by itself, unlike in a petrol engine, which uses an ignition plug. The explosion mak ...
... this injection happens at the moment when the piston is at the upper dead centre, i.e. when the cylinder volume is smallest. Because of the strongly compressed air, the mixture is so hot (ca. 800°C), that it ignites by itself, unlike in a petrol engine, which uses an ignition plug. The explosion mak ...
RF3398 数据资料DataSheet下载
... The RF3398 is a general purpose, low-cost RF amplifier IC. The device is manufactured on an advanced Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has been designed for use as an easily-cascadable 50Ω gain block. Applications include IF and RF amplification in wireless voice ...
... The RF3398 is a general purpose, low-cost RF amplifier IC. The device is manufactured on an advanced Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has been designed for use as an easily-cascadable 50Ω gain block. Applications include IF and RF amplification in wireless voice ...
Technical Update - Ceramic versus Tantalum 2008-Nov
... but from this temperature up to 125°C, there is a linear depletion of the voltage rating from 100%v at 85°C to 67% at 125°C. This derating method was instituted as the result of extensive, accelerated life testing, and it is applied exclusively to tantalum capacitors. Additionally, hidden in many ma ...
... but from this temperature up to 125°C, there is a linear depletion of the voltage rating from 100%v at 85°C to 67% at 125°C. This derating method was instituted as the result of extensive, accelerated life testing, and it is applied exclusively to tantalum capacitors. Additionally, hidden in many ma ...
Transistors - SFA Physics and Astronomy
... Transistor Q1 "pushes" (drives the output voltage in a positive direction with respect to ground), while transistor Q2 "pulls" the output voltage (in a negative direction, toward 0 volts with respect to ground). Individually, each of these transistors is operating in class B mode, active only for on ...
... Transistor Q1 "pushes" (drives the output voltage in a positive direction with respect to ground), while transistor Q2 "pulls" the output voltage (in a negative direction, toward 0 volts with respect to ground). Individually, each of these transistors is operating in class B mode, active only for on ...
Low Voltage CMOS Bandgap References with
... processes as well as for portable applications, lowpower bandgap reference design techniques with sub1V supply voltage have been developed [1-3]. In addition to voltage reference circuits, current reference circuits are also required in many sensor and biomedical applications (e.g. [4][5]) as well a ...
... processes as well as for portable applications, lowpower bandgap reference design techniques with sub1V supply voltage have been developed [1-3]. In addition to voltage reference circuits, current reference circuits are also required in many sensor and biomedical applications (e.g. [4][5]) as well a ...
Temperature coefficient of resistance basics
... The reason behind the temperature coefficient of resistance within a conductor can be reasoned intuitively. The resistance of a material has a dependence upon a number of phenomena. One of these is the number of collisions that occur between the charge carriers and atoms in the material. As the temp ...
... The reason behind the temperature coefficient of resistance within a conductor can be reasoned intuitively. The resistance of a material has a dependence upon a number of phenomena. One of these is the number of collisions that occur between the charge carriers and atoms in the material. As the temp ...
Thermal runaway
Thermal runaway refers to a situation where an increase in temperature changes the conditions in a way that causes a further increase in temperature, often leading to a destructive result. It is a kind of uncontrolled positive feedback.In other words, ""thermal runaway"" describes a process which is accelerated by increased temperature, in turn releasing energy that further increases temperature. In chemistry (and chemical engineering), this risk is associated with strongly exothermic reactions that are accelerated by temperature rise. In electrical engineering, thermal runaway is typically associated with increased current flow and power dissipation, although exothermic chemical reactions can be of concern here too. Thermal runaway can occur in civil engineering, notably when the heat released by large amounts of curing concrete is not controlled. In astrophysics, runaway nuclear fusion reactions in stars can lead to nova and several types of supernova explosions, and also occur as a less dramatic event in the normal evolution of solar mass stars, the ""helium flash"".There are also concerns regarding global warming that a global average increase of 3-4 degrees Celsius above the preindustrial baseline could lead to a further unchecked increase in surface temperatures. For example, releases of methane, a greenhouse gas more potent than CO2, from wetlands, melting permafrost and continental margin seabed clathrate deposits could be subject to positive feedback.