48v smps power supply

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Note that except for some industries, such as PCs and CompactPCI, PSU output connectors and pinouts in general are not standardized and are left up to the manufacturers. The low-pass EMI filter is designed to reduce to an acceptable level high frequency currents getting back into the AC line.
The filter is followed by the rectifier that converts bipolar AC waveforms to unipolar pulsating ones. The above standards also specify minimum efficiency of certain classes of electronic devices. The downstream DC-DC converter runs off the PFC output, generates a set of DC busses required for the load, and normally also provides input-to-output isolation.
If you want to learn practical PSU design, you may start with Unitrode seminar books, where you can find a comprehensive collection of power supply tutorials, practical schematic diagrams, and guides.
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The Nady SMPS-2X Dual Phantom Power Supply delivers 48V DC phantom power for condenser microphones. Power supply unit (PSU), technically speaking, is a device that transfers electric energy from a source to a load and in the process changes its characteristics to meet specific requirements. In such a device, power handling electronic components are continuously switching "on" and "off" with high frequency in order to provide the transfer of electric energy via energy storage components (inductors and capacitors).
Everybody knows about them, but some people are under impression that a fuse blows immediately once applied current exceeds its rating.
In reality, a fuse is designed to physically open the circuit when the current being drawn through it exceeds its rating for a certain period of time. This is necessary to prevent interference on the other devices connected to the same electrical wiring. It has four diodes in a bridge arrangement to provide the same polarity of the output for both polarities of the input. The rectified input voltage is fed into the next stage, whose prime purpose is to increase power factor (PF). It may also provide a separate stand-by voltage (SBV) which remains active when the PS unit is shut down for any reason. Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. Contact the seller- opens in a new window or tab and request a shipping method to your location.
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Import charges previously quoted are subject to change if you increase you maximum bid amount. The SMPS-2X offers 2 balanced XLR mic inputs for stereo recording, and outputs to connect in-line with a mic and mixer. By varying duty cycle, frequency or a relative phase of these transitions an average value of output voltage or current is controlled. The rectified voltage is next applied to the power factor correction (PFC) pre-regulator followed by the downstream DC-DC converter(s). There is a number of standards (such as EN55022 for Information Technology equipment) that govern the maximum level of EMI. Note that because Pin=VA*PF and since any real active circuit has PF<1, you can't just multiply input volts and amps- to measure Pin you need a true wattmeter. If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable.

The Nady SMPS-2X power supply has state-of-the-art features and specs and will be a valuable tool in your studio.
The operating frequency range of commercial SMPS units varies typically from 50 kHz to several MHz (see more on frequency selection). Due to this delay, fuses will not always protect electronic components from a catastrophic failure caused by some fault conditions.
Most low-voltage non-isolated converters use buck regulators (single or interleaved multi-phase).
Their main purpose is to protect the upstream line from overloading and overheating, avoid tripping of an external circuit breaker, and prevent a fire that may be triggered by components that failed into a short circuit. There are also designs where "boost" DC-link follows the peak of input AC voltage instead of being fixed, or where a buck converter is used instead of a boost.
While regulating Vboost, it controls at the same time the shape of the input current, so that it is in phase with mains AC and repeats its waveform.
Depending on the mode of operation of the semiconductors, the converters can be linear or switching. Without this, the current would be delivered to the SMPS in short high level pulses, which have a high harmonic content. The selection of the right power topology depends on specific requirements for the product (including cost and time factors). The harmonics do not supply any real energy to the load, but cause additional heating in the wiring and distribution equipment.
They also reduce the maximum wattage that can be taken from a standard wall outlet, since circuit breakers are rated by electric current rather than by watts.
There are various regulations that limit the input harmonic content, such as EN61000-3-2 (for equipment connected to public low-voltage distribution systems) or DO-160 (for airborne equipment). To meet these requirements you can use a PF correction technique: a device with a high PF draws a nearly sinusoidal current from the source (at a sinusoidal input). Currently there are no mandatory international standards that specifically regulate the PF of an electronic equipment, but there are various national and industry standards as well as voluntary incentive programs.

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