Jun 1999 20A Constant Current Source/Battery Charger is 95
... extended to even higher currents. To achieve the higher output currents, more MOSFETs can be used in parallel. An additional PNP/NPN gate drive buffer is also recommended. Integrated MOSFET drivers are not recommended because of the time ...
... extended to even higher currents. To achieve the higher output currents, more MOSFETs can be used in parallel. An additional PNP/NPN gate drive buffer is also recommended. Integrated MOSFET drivers are not recommended because of the time ...
DRV8871-Q1 3.6-A Brushed DC Motor Driver
... inputs control the H-bridge driver, which consists of four N-channel MOSFETs that have a typical Rds(on) of 565 mΩ (including one high-side and one low-side FET). A single power input, VM, serves as both device power and the motor winding bias voltage. The integrated charge pump of the device boosts ...
... inputs control the H-bridge driver, which consists of four N-channel MOSFETs that have a typical Rds(on) of 565 mΩ (including one high-side and one low-side FET). A single power input, VM, serves as both device power and the motor winding bias voltage. The integrated charge pump of the device boosts ...
Product Specification Thermal Print Head Model: MO-S2-8-5A2
... driving theory of thermal dot-line printer heads. 2. “Strobes 1~6” are usually connected to one common signal and are therefore just referred to as “Strobe” in the following. 3. If TDHC is not used, it is recommended to externally connect “Hist 1” and “Hist 2” to “Vcc” and “Hist 3” to “GND”, in orde ...
... driving theory of thermal dot-line printer heads. 2. “Strobes 1~6” are usually connected to one common signal and are therefore just referred to as “Strobe” in the following. 3. If TDHC is not used, it is recommended to externally connect “Hist 1” and “Hist 2” to “Vcc” and “Hist 3” to “GND”, in orde ...
LM338K Datasheet
... This bypass capacitor prevents ripple form being amplified as the output voltage is increased. With a 10µF bypass capacitor 75dB ripple rejection is obtainable at any output level. Increases over 20µF do not appreciably improve the ripple rejection at frequencies above 120Hz. If the bypass capacitor ...
... This bypass capacitor prevents ripple form being amplified as the output voltage is increased. With a 10µF bypass capacitor 75dB ripple rejection is obtainable at any output level. Increases over 20µF do not appreciably improve the ripple rejection at frequencies above 120Hz. If the bypass capacitor ...
Slide 1
... amplifier in the active region (linear region) of the characteristics is obtained. The selection of a proper quiescent point generally depends on the following factors: (a) The amplitude of the signal to be handled by the amplifier and distortion level in signal (b) The load to which the amplifier ...
... amplifier in the active region (linear region) of the characteristics is obtained. The selection of a proper quiescent point generally depends on the following factors: (a) The amplitude of the signal to be handled by the amplifier and distortion level in signal (b) The load to which the amplifier ...
Ch 26 Current and Resistance
... When a conductor has a current passing through it, the electrons move randomly, but they tend to drift with a drift speed vd in the direction opposite that of the applied electric field that causes the current. The drift speed is tiny compared with the speeds in the random motion. In the figure, the ...
... When a conductor has a current passing through it, the electrons move randomly, but they tend to drift with a drift speed vd in the direction opposite that of the applied electric field that causes the current. The drift speed is tiny compared with the speeds in the random motion. In the figure, the ...
Electricity
... This is an important point. It reveals the direct relationship between resistivity and resistance, so that for two "wires" of equal dimensions, the difference in resistance will be determined completely by the intrinsic resistivities of the materials making up the two wires. This will be illustrated ...
... This is an important point. It reveals the direct relationship between resistivity and resistance, so that for two "wires" of equal dimensions, the difference in resistance will be determined completely by the intrinsic resistivities of the materials making up the two wires. This will be illustrated ...
LM338
... This bypass capacitor prevents ripple form being amplified as the output voltage is increased. With a 10µF bypass capacitor 75dB ripple rejection is obtainable at any output level. Increases over 20µF do not appreciably improve the ripple rejection at frequencies above 120Hz. If the bypass capacitor ...
... This bypass capacitor prevents ripple form being amplified as the output voltage is increased. With a 10µF bypass capacitor 75dB ripple rejection is obtainable at any output level. Increases over 20µF do not appreciably improve the ripple rejection at frequencies above 120Hz. If the bypass capacitor ...
... remains unaffected even when the terminals of the same battery sending current in the wire are inter changed. Which of the above observations of the student appears to be wrong and why? Ans Observation (ii) is wrong. When the direction of flow of current is changed, the direction of the magnetic fi ...
L293, L293D Quadruple Half-H Drivers (Rev. D)
... of inductive loads such as relays, solenoids, DC and bipolar stepping motors, as well as other high-current and high-voltage loads. All inputs are TTL compatible and tolerant up to 7 V. Each output is a complete totem-pole drive circuit, with a Darlington transistor sink and a pseudo-Darlington sour ...
... of inductive loads such as relays, solenoids, DC and bipolar stepping motors, as well as other high-current and high-voltage loads. All inputs are TTL compatible and tolerant up to 7 V. Each output is a complete totem-pole drive circuit, with a Darlington transistor sink and a pseudo-Darlington sour ...
Better Accuracy in Temperature Calibration and Measurement
... interconnections plus a small number of connectors for the AC power and internal DC supply. Instruments addressing this market have so far used mechanical relays for some or all of the signal routing. In moving to semiconductor switching there was some concern about the associated thermal EMFs. We w ...
... interconnections plus a small number of connectors for the AC power and internal DC supply. Instruments addressing this market have so far used mechanical relays for some or all of the signal routing. In moving to semiconductor switching there was some concern about the associated thermal EMFs. We w ...
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.