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substation monitoring and control
substation monitoring and control

... Nowadays there are various electronic equipment available for remote operation of grid control. However, the main disadvantage of these systems is that they can be operated only from short ranges and also less reliable. Thus, to overcome the above drawbacks, we are using one of the wireless communic ...
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PAM2804 Description Features Pin Assignments Applications

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MAX2673EVKIT.pdf

... Figure 1 is the schematic for the EV kit as shipped. The output matching components (L1, L2, C4, and C5) are optimized for an output frequency of 900MHz. Capacitor C1 is a DC-blocking capacitor for the LO input port. To reduce the possibility of noise pickup, resistor R2 and capacitor C9 form a lowp ...
Designing a low cost power supply using a VIPer12/22A
Designing a low cost power supply using a VIPer12/22A



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... higher current output (maximum 24A for this power supply). Figure 9 shows the parallel connection between two 6303D power supplies at parallel tracking. One unit is set at 30V/5A (MASTER setting is 30V/2.5A) while the other is at 20V/6A (MASTER setting is 20V/3A). Figure 10 shows the parallel connec ...
Power Quality
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Sub-1.0 pF Quad ESD Array
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... protected line exceeds the reference voltage (Vf or VCC + Vf). The diodes will force the transient current to bypass the sensitive circuit. Data lines are connected at pins 1, 3, 4 and 6. The negative reference is connected at pin 2. This pin must be connected directly to ground by using a ground pl ...
ixrfd631 - IXYS Colorado
ixrfd631 - IXYS Colorado

... • Low Quiescent Supply Current • Low Propagation Delay • High Capacitive Load Drive Capability • Wide Operating Voltage Range • Kelvin Ground ...
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RESET MAX1947 Low Input/Output Voltage Step-Up DC-DC Converter with
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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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