DC/AC converters - what are they used for?

2020-09-22
DC/AC converters - what are they used for?

DC-AC converters (12/24V->230VAC)

DC-AC converters are products that provide the output with an AC voltage similar to that of the 230VAC mains. They make it possible to supply power to common electronic equipment, household appliances, white goods and computers on camping trips, during transport and anywhere where access to a conventional socket outlet is difficult. They are useful in the work of service, repair and maintenance teams.

DC-AC inverters are useful products for keeping stationary equipment running in mobile environments, providing power in the event of a power failure or supplying power to power tools in the field. The high output power and extensive protection ensure reliable operation, while the compact size and weight make them easy to store.

On input, the DC-AC inverters work with a lead-acid automotive battery and their output voltage is a near-sinusoidal waveform, the same as that of a UPS. The output power of these units ranges from 300 to 800W, with the possibility of a momentary load of more power, 1.5 ... 2 times the rated value.
Lower-power models are connected to the cigarette lighter socket, while more powerful units require connection directly to the battery with crocodile clips, as current consumption at full load reaches several tens of amperes.

The converters are available in three product groups:

  • for use with a 12V battery,
  • for use with a 24 V battery,
  • universal 12-24V.

They have 1-2 mains sockets at the output. There is also a USB socket for charging mobile devices. The converters signal a fully discharged battery with a buzzer, have a mechanically resistant metal housing and a built-in fan that turns on at high load. Very important for the operation of these devices and the possibility of achieving rated performance is ensuring a good and secure connection to the battery. This applies particularly to the 12-volt high-power versions.

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