True Sine Wave Inverters:
Also known as Pure Sine Wave Inverters, True Sine Wave inverters deliver the smoothest and fastest wave output and they are also the most expensive. A true sine wave inverter outputs a sine wave at mains voltage level, just like a generator would. The wave form produced by true sine wave inverters is the same as or better than the power delivered by the utility power. These types of inverters produce cleaner power and are able to cover all the complex electronics that are part of our everyday lives. Sensitive equipments, like certain medical equipment and variable speed or rechargeable tools requires this type of inverter to operate correctly. Radios and computers, for example, work better with true sine wave inverters because modified square wave inverters’ less-smooth waves disrupt the radio’s reception, causing static and other noise. Devices that requires this type of Sine wave includes televisions, digital clocks with radios, laser printers, photocopiers, etc.
Modified Sine Wave Inverters:
Modified sine wave or square wave inverters are among the most commonly used type of inverters in automobiles and boats. They are efficient and consistent enough when it comes to running most household devices and appliances. These types of waves use relatively inexpensive electronics such as thyristors, diodes and other simple components to produce a square wave. They are cheaper and work more efficiently if you want to run something off a battery with a limited charge. They are also the most common in the market. A modified sine wave is suitable if you mostly want to run lights, TV, microwave oven, tools and other similar electrical devices.
FEATURES TO CONSIDER WHEN BUYING AN INVERTER
Battery: This is a very vital part of an inverter. The performance and life of an inverter depends greatly on the battery. The battery of an inverter is undeniably its most important part and not only determines its life span but its ability to function effectively. There are several classifications of inverter battery.
Flat plate batteries also known as Lead acid battery are used for automotive purposes. These batteries are designed to provide high current for a very short duration. They are also not designed to be regularly discharged by more than 25% of their rated capacity.
Deep cycle batteries provide continuous power which can be discharged at least 50% of their rated capacity. Deep cycle batteries have specially designed thick plates to withstand frequent charging and discharging.
Tubular batteries are very efficient and require relatively low maintenance. They also have longer battery life because it is protected by a tube.
Maintenance free batteries are safety secured and do not emit any kind of poisonous or harmful gases. They are best for old or busy people who do not have the time to refill distilled water at regular intervals. The power supply of inverters depends on the age and condition of the battery, and the power demand being placed on it by the equipments being operated by the inverter.
Size: The size of an inverter is a principal feature you mustn’t overlook when buying an inverter, and the size here refers to size in terms of output. Before buying an inverter, endeavor to calculate the total wattage of power your electronic devices run and ensure that the inverter you buy will supply the adequate Alternate current power needed to power the electronic devices. You should also take into consideration the size of your home or office as well the number of electrical appliances in use and their energy consumption levels as this will play a very big part in selecting the right capacity of inverter and battery for your specification.
Power Output: The power output that any inverter is capable of generating is typically displayed in watts, and most electrical appliances and electronic devices require a certain amount of wattage to function as they should. Most electronic devices and electrical appliances come with specific requirements in terms of volts and amps. When it comes to deciding how much power to look for in a power inverter, buyers should know that higher-watt inverter (800 upwards) is enough to run power tools, microwave ovens, larger TVs and other power equipments. It is also imperative to take into consideration the type of appliance that requires power because different appliances are known to draw power differently. The higher the working load of the equipment, the higher the required watts.