In the 20th century there were many developments in the field of electrical and mechanical machines and the start of rapid development in electronic machines such as TV, radio, cellphones and satellites as well as motorized vehicles which had been integrated with electronic machines such as EFI (electronic fuel injection) in an electronic circuit. a DC (direct current) power supply is needed whose source is batteries and accumulators, but due to time and flexibility considerations, a replacement circuit is made from electronic components such as diodes and bridge diodes as well as capacitors and transformers to produce artificial DC as a substitute for pure DC, DC we call this artificial ADAPTER.
