Onepot Solution

Output Voltage	9 V
Input Voltage	240 V
Current	1 A
Color	Black
Material	Plastic
Number Of Pins	2

Switching power supplies is more efficient because linear power supplies lose more energy as heat. The output of the switching power supply was controlled by the control circuit. In contrast, linear power supplies are controlled by the response of the regulator circuit.
Get best price for 1 A Switching Power Adapter

Output Voltage	12 V
Material	Plastic
Power	45 W
Current	1 A
Input Voltage	100-240 V
Frequency	50 Hz
Color	Black

Adapters are commonly used external power supply units for electrical equipment which cannot directly draw power from the mains network.

Get best price for 12 V 1 Amp Dc Adapter

Output Voltage	24 V
Current	2 A
Frequency	50 Hz
Colour	Black
Material	ABS Plastic
Input Voltage	100-240 V

AC DC Adapteris a type of external  power supply, often enclosed in a case similar to an AC plug. Other common names include wall wart, power brick, wall charger, and power adapter. 
Get best price for 24 V AC DC Adapter

Output Voltage	9 V
Power	45 W
Current	1 A
Input Voltage	100-240 V
Frequency	50 Hz
Power Source	Electric

SMPS Adapter is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.
Get best price for 9 V SMPS Adapter