Ads
related to: pulsating dc vs ac electricity heater power adapter system for air conditioner- TVs
Shop Our Selection of 4K and LED
TVs, Projectors and Accessories
- Car Audio
All the Latest Gear from Stereos to
Backup Cams and Bluetooth Adapters
- Home Theater
A/V Gear to Bring the Movie Theater
Experience into Your Living Room
- Digital Cameras
Everything from Point-and-Shoot to
DSLRs, Lenses and Accessories
- TVs
Search results
Results from the WOW.Com Content Network
Pulsed DC (PDC) or pulsating direct current is a periodic current which changes in value but never changes direction. Some authors use the term pulsed DC to describe a signal consisting of one or more rectangular ("flat-topped"), rather than sinusoidal, pulses.
Consumer electronics usually include an AC adapter (a type of power supply) to convert mains-voltage AC current to low-voltage DC suitable for consumption by microchips. Consumer voltage converters (also known as "travel converters") are used when traveling between countries that use ~120 V versus ~240 V AC mains power.
The output will usually be DC in the range 1.5–24 V. Power supplies that output either 100–120 V AC or 210–240 V AC are available; they are called inverters, due to the conversion from DC to AC rather than the voltage change. The output frequency and waveform of an inverter may not accurately replicate that supplied by mains electricity ...
These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.
This new system accepts various national power plugs and most laptop chargers will function properly at 120 V 60 Hz AC even if sold in 230 V 50 Hz AC markets. Apple offered an EmPower MagSafe power adapter for their MacBook , MacBook Pro , and MacBook Air lines of notebooks, and also included a cigarette lighter socket adapter.
Most refrigerators, air conditioners, pumps and industrial machinery use AC power, whereas most computers and digital equipment use DC power (digital devices plugged into the mains typically have an internal or external power adapter to convert from AC to DC power). AC power has the advantage of being easy to transform between voltages and is ...
A schematic representation of long distance electric power transmission. From left to right: G=generator, U=step-up transformer, V=voltage at beginning of transmission line, Pt=power entering transmission line, I=current in wires, R=total resistance in wires, Pw=power lost in transmission line, Pe=power reaching the end of the transmission line, D=step-down transformer, C=consumers.
Line commutated converters require voltage from the AC network for commutation, but since the late 1990s, voltage sourced converters have started to be used for HVDC. Voltage sourced converters use insulated-gate bipolar transistors instead of thyristors, and these can provide power to a deenergized AC system.
Ads
related to: pulsating dc vs ac electricity heater power adapter system for air conditioner