GS-D200 GS-D200S 2/2.5A BIPOLAR STEPPER MOTOR DRIVE MODULES
... THERMAL OPERATING CONDITIONS In many cases the modules do not require any additional cooling because the dimensions and the shape of the metal box are studied to offer the minimum possible thermal resistance case-to-ambient for a given volume. It should be remembered that these modules are a power d ...
... THERMAL OPERATING CONDITIONS In many cases the modules do not require any additional cooling because the dimensions and the shape of the metal box are studied to offer the minimum possible thermal resistance case-to-ambient for a given volume. It should be remembered that these modules are a power d ...
General Description Features
... the remote sensor. The MAX6627/MAX6628 temperature should never exceed +125°C. These sensors are 3-wire serial interface SPI-compatible, allowing the MAX6627/MAX6628 to be readily connected to a variety of µCs. The MAX6627/MAX6628 are readonly devices, simplifying their use in systems where only tem ...
... the remote sensor. The MAX6627/MAX6628 temperature should never exceed +125°C. These sensors are 3-wire serial interface SPI-compatible, allowing the MAX6627/MAX6628 to be readily connected to a variety of µCs. The MAX6627/MAX6628 are readonly devices, simplifying their use in systems where only tem ...
CIRCUIT FUNCTION AND BENEFITS
... the ADuC7060/ADuC7061. This ADC measurement can be used as feedback for the PWM control software to adjust the 4 mA-to-20 mA current setting. The primary ADC of the ADuC7060/ADuC7061 measures the voltage across the RTD. The RTD is excited by the on-chip excitation current source, IEXC0. It is recomm ...
... the ADuC7060/ADuC7061. This ADC measurement can be used as feedback for the PWM control software to adjust the 4 mA-to-20 mA current setting. The primary ADC of the ADuC7060/ADuC7061 measures the voltage across the RTD. The RTD is excited by the on-chip excitation current source, IEXC0. It is recomm ...
EET-ASIA/semicon temp
... tinuous power ratings higher of hotspot phenomena to be solely on normal dc power ratidentified depending on the ings will often lead to compothan expected. The heat generated by very pulse duration and can be con- nent failure. In addition to inhomogeneshort transients, however, has veniently divid ...
... tinuous power ratings higher of hotspot phenomena to be solely on normal dc power ratidentified depending on the ings will often lead to compothan expected. The heat generated by very pulse duration and can be con- nent failure. In addition to inhomogeneshort transients, however, has veniently divid ...
MAX1916 Low-Dropout, Constant-Current Triple White LED Bias Supply General Description
... The MAX1916 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. The MAX1916 uses a single resistor to set the bias current for three LEDs, which are matched to 0.3%. The MAX1916 consumes only 40µA of supply ...
... The MAX1916 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. The MAX1916 uses a single resistor to set the bias current for three LEDs, which are matched to 0.3%. The MAX1916 consumes only 40µA of supply ...
NTC thermistors, Application notes
... thermistor. The thermistor has to cool down before it can cause second delay. If the thermistor remains unloaded for a time t = 3 τc (3 times the thermal cooling time constant) between two operations, the time for the second delay will be 80% to 90% of that for the first delay. It is therefore use ...
... thermistor. The thermistor has to cool down before it can cause second delay. If the thermistor remains unloaded for a time t = 3 τc (3 times the thermal cooling time constant) between two operations, the time for the second delay will be 80% to 90% of that for the first delay. It is therefore use ...
8-5 Equilibrium Conversion
... We notice that the conversion and temperature increase very rapidly over a short distance (i.e., a small amount of catalyst). This sharp increase is sometimes referred to as the "point" or temperature at which the reaction ignites. If the inlet temperature were lowered to 500 K, the corresponding eq ...
... We notice that the conversion and temperature increase very rapidly over a short distance (i.e., a small amount of catalyst). This sharp increase is sometimes referred to as the "point" or temperature at which the reaction ignites. If the inlet temperature were lowered to 500 K, the corresponding eq ...
FPF2300/02/03 Dual-Output Current Limit Switch
... technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a s ...
... technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a s ...
Lab 4: Bipolar transistors and transistor circuits Lab 4: Bipolar
... use an appropriate resistive load, and this time you’ll also need a 4.7 microfarad blocking capacitor in series with the load. The blocking capacitor keeps the load from changing the DC biasing scheme while still having a very low impedance at frequencies in the kHz range—for example, a 4.7 μF capac ...
... use an appropriate resistive load, and this time you’ll also need a 4.7 microfarad blocking capacitor in series with the load. The blocking capacitor keeps the load from changing the DC biasing scheme while still having a very low impedance at frequencies in the kHz range—for example, a 4.7 μF capac ...
Designing with Thermally Protected TMOV Varistors in SPD and AC
... risk that a sustained over-voltage may be applied to an MOV that is rated for a much lower continuous voltage. In an unlimited current condition the MOV will first fail to a low impedance (few Ohms), but due to the high amount of energy available, it most often ruptures instantaneously. If, however, ...
... risk that a sustained over-voltage may be applied to an MOV that is rated for a much lower continuous voltage. In an unlimited current condition the MOV will first fail to a low impedance (few Ohms), but due to the high amount of energy available, it most often ruptures instantaneously. If, however, ...
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.