A benchtop power supply is a handy piece of equipment to have around if you do a lot of electronics or other powered projects on your bench and need a reliable source of power at different voltages (+5V, -5V, +3.3V, +12V, etc). One option is to roll your own, using an ATX power supply yanked out of an old PC.
What is common power supply?
An integrated power supply is one that shares a common printed circuit board with its load. An external power supply, AC adapter or power brick, is a power supply located in the load's AC power cord that plugs into a wall outlet; a wall wart is an external supply integrated with the outlet plug itself.
What is a variable voltage?
Variable Voltage, or VV, is a feature found in some personal vaporizers that allows the user to manually adjust the voltage being provided to the atomizer (or cartomizer) heating coils.