stepper motor drive considerations, common
... current losses. The latter group of parasitic losses generally increases with increased ripple currents and frequency. Chopping techniques that have a high ripple current will have higher losses in the motor. Enable or two phase chopping will cause higher losses in the motor with the effect of raisi ...
... current losses. The latter group of parasitic losses generally increases with increased ripple currents and frequency. Chopping techniques that have a high ripple current will have higher losses in the motor. Enable or two phase chopping will cause higher losses in the motor with the effect of raisi ...
8.0 A, 400 V NPN Bipolar Power Transistor
... conditions the collector voltage must be held to a safe level at or below a specific value of collector current. This can be accomplished by several means such as active clamping, RC snubbing, load line shaping, etc. The safe level for these devices is specified as a Reverse Bias Safe Operating Area ...
... conditions the collector voltage must be held to a safe level at or below a specific value of collector current. This can be accomplished by several means such as active clamping, RC snubbing, load line shaping, etc. The safe level for these devices is specified as a Reverse Bias Safe Operating Area ...
0061 welding
... • The nice thing about the calcium carbide method of producing acetylene is that it can be done on almost any scale desired. Placed in tightly-sealed cans, calcium carbide keeps indefinitely. For years, miners’ lamps produced acetylene by adding water, a drop at a time, to lumps of carbide. • Before ...
... • The nice thing about the calcium carbide method of producing acetylene is that it can be done on almost any scale desired. Placed in tightly-sealed cans, calcium carbide keeps indefinitely. For years, miners’ lamps produced acetylene by adding water, a drop at a time, to lumps of carbide. • Before ...
Current Transducer ITZ 10000-SB FLEX ULTRASTAB I = 10000 A
... 65 °C and allows the transducer to cool. When this occurs, the status LED is switched off. When the rack electronics temperature cools to approximately 60 °C, the measuring circuit is automatically re-enabled and the status LED is again lit. ...
... 65 °C and allows the transducer to cool. When this occurs, the status LED is switched off. When the rack electronics temperature cools to approximately 60 °C, the measuring circuit is automatically re-enabled and the status LED is again lit. ...
Industrial Electronics
... 125 VAC protection will likely be insufficient, for industrial AC supply lines. Voltages of 240, 480, or even 600 VAC may be encountered. SOC is one of the few fuse manufacturers offering miniature fuse protection at these voltage levels. In AC/DC converters, dual ratings are often desirable. Since, ...
... 125 VAC protection will likely be insufficient, for industrial AC supply lines. Voltages of 240, 480, or even 600 VAC may be encountered. SOC is one of the few fuse manufacturers offering miniature fuse protection at these voltage levels. In AC/DC converters, dual ratings are often desirable. Since, ...
Design and Evaluation of Electronic Circuit for Plasma Speaker
... important parts of the circuit; it generates the 30 kHz square wave and modulates it with the audio input. This setup, shown in figure 7, alters the high time of the Hbridge inverter; the low time remains constant. Therefore both the duty cycle and the frequency are affected. The IC used is a simple ...
... important parts of the circuit; it generates the 30 kHz square wave and modulates it with the audio input. This setup, shown in figure 7, alters the high time of the Hbridge inverter; the low time remains constant. Therefore both the duty cycle and the frequency are affected. The IC used is a simple ...
Lecture Notes.
... 1. Usually single turn primary and secondary 2. Can use multi-turn secondary 3. # Sections function of switch voltage ...
... 1. Usually single turn primary and secondary 2. Can use multi-turn secondary 3. # Sections function of switch voltage ...
To Get a Perfect “A”…
... The diode limited Wein Bridge does NOT produce a perfect sine wave. The amplifier gain is different when the diodes conduct and when they do not conduct. Result: Distorted sine wave. ...
... The diode limited Wein Bridge does NOT produce a perfect sine wave. The amplifier gain is different when the diodes conduct and when they do not conduct. Result: Distorted sine wave. ...
Lecture Diodes Transistors FETs
... • LEDs are based on pn junctions under forward bias. • The wavelength of emitted light is fixed for a material and depends on the energy gap between the conduction band and the hole energy level. • LEDs tend to be more efficient for lighting applications as compared to ordinary light bulbs that conv ...
... • LEDs are based on pn junctions under forward bias. • The wavelength of emitted light is fixed for a material and depends on the energy gap between the conduction band and the hole energy level. • LEDs tend to be more efficient for lighting applications as compared to ordinary light bulbs that conv ...
Effect of overcharge on entropy and enthalpy of lithium
... crystal structure. The electrodes were taken from cells discharged to 2.75 V. 3.3.1. Lithium cobalt oxide (LCO) cathode Fig. 10(a) shows the full XRD charts of LCO cathode materials at different COV. The diffraction angle areas where the 0 0 3 peak and the 1 0 4 peak appear are magnified in Fig. 10(b ...
... crystal structure. The electrodes were taken from cells discharged to 2.75 V. 3.3.1. Lithium cobalt oxide (LCO) cathode Fig. 10(a) shows the full XRD charts of LCO cathode materials at different COV. The diffraction angle areas where the 0 0 3 peak and the 1 0 4 peak appear are magnified in Fig. 10(b ...
xenon bulb failure analysis - Tri
... simplest item to eliminate in an ignition problem. See if the bulb lights without the automation; if it does, then the problem is in the automation system. Refer to that specific system’s manual or drawings to correct the problem. Another item that is easy to eliminate is the lamphouse or console au ...
... simplest item to eliminate in an ignition problem. See if the bulb lights without the automation; if it does, then the problem is in the automation system. Refer to that specific system’s manual or drawings to correct the problem. Another item that is easy to eliminate is the lamphouse or console au ...
TPS61058 数据资料 dataSheet 下载
... In general, a boost converter only regulates output voltages which are higher than the input voltage. This device operates differently and is capable of driving high power single die white LEDs from a fully charged Li-Ion cell. To control this applications properly, a down conversion mode is impleme ...
... In general, a boost converter only regulates output voltages which are higher than the input voltage. This device operates differently and is capable of driving high power single die white LEDs from a fully charged Li-Ion cell. To control this applications properly, a down conversion mode is impleme ...
CHAPtER 4 Electrolysis
... electrolytic reaction to occur, the actual observed voltage may vary by as much as 1 volt, owing to a phenomenon known as ‘overpotential’. Note (ii): A full analysis of this situation would also involve the possibility that water molecules from the solution could also be ‘made’ to react. This is exa ...
... electrolytic reaction to occur, the actual observed voltage may vary by as much as 1 volt, owing to a phenomenon known as ‘overpotential’. Note (ii): A full analysis of this situation would also involve the possibility that water molecules from the solution could also be ‘made’ to react. This is exa ...
01 - Transformer
... Construction. Transformer consists of two or more coils of wire wrapped around a common ferromagnetic core. The coils are usually not directly connected. The common magnetic flux present within the coils connects the coils. There are two windings; (i) Primary winding (input winding); the windi ...
... Construction. Transformer consists of two or more coils of wire wrapped around a common ferromagnetic core. The coils are usually not directly connected. The common magnetic flux present within the coils connects the coils. There are two windings; (i) Primary winding (input winding); the windi ...
Switched Mode Controller for DC Motor Drive
... Shutdown Comparator The shutdown terminal may be used for implementing various shutdown and protection schemes. By pulling the terminal more than 2.5V below VIN, the output drivers will be enabled. This can be realized using an open collector gate or NPN transistor biased to either ground or the neg ...
... Shutdown Comparator The shutdown terminal may be used for implementing various shutdown and protection schemes. By pulling the terminal more than 2.5V below VIN, the output drivers will be enabled. This can be realized using an open collector gate or NPN transistor biased to either ground or the neg ...
The Test, Usage and Maintenance of Power Switching Subsystems Kevin Paton
... maximum current values between 3 amps and 5 amps may or may not have gold plated contacts. Relays that operate in this range may offer gold plating as an option but this option is transparent to the end user and is dictated by the switch module vendor which adds some difficulty for the test engineer ...
... maximum current values between 3 amps and 5 amps may or may not have gold plated contacts. Relays that operate in this range may offer gold plating as an option but this option is transparent to the end user and is dictated by the switch module vendor which adds some difficulty for the test engineer ...
TIME-A-VALVE®
... advances immediately; the other a preset time later. Many cylinders can be sequenced in this fashion. • You want a cylinder to go forward, dwell and return. Using double solenoid valve, have momentary switch contact energize one side of valve to feed cylinder forward. At end of stroke micro switch o ...
... advances immediately; the other a preset time later. Many cylinders can be sequenced in this fashion. • You want a cylinder to go forward, dwell and return. Using double solenoid valve, have momentary switch contact energize one side of valve to feed cylinder forward. At end of stroke micro switch o ...
1 - Electrical and Computer Engineering
... frequency, DC to DC resonant converter. The goal of the design is to produce an extremely efficient, small, light weight, and cost effective DC to DC converter. These are some of the properties that are made possible by using a ZVT resonant type converter. The converter built in this project has 4 m ...
... frequency, DC to DC resonant converter. The goal of the design is to produce an extremely efficient, small, light weight, and cost effective DC to DC converter. These are some of the properties that are made possible by using a ZVT resonant type converter. The converter built in this project has 4 m ...
White LED Power Supply Design Techniques
... compared to a charge pump solution in the majority of cases. However, when using a boost converter or charge pump in a wireless application EMI needs to be considered as well. Keeping the EMI under control Whatever solution is considered a charge pump or a boost converter special care is required to ...
... compared to a charge pump solution in the majority of cases. However, when using a boost converter or charge pump in a wireless application EMI needs to be considered as well. Keeping the EMI under control Whatever solution is considered a charge pump or a boost converter special care is required to ...
Working With Optically-Isolated Relays
... supplies and control devices with load currents up to 10 amps. These industrial uses represent the next wave of applications ...
... supplies and control devices with load currents up to 10 amps. These industrial uses represent the next wave of applications ...
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.