Pavlos constantinou on november 4th 2017 at 9 45 pm said.
Computer power supply bench.
As we know psu in computers provides various dc voltages 3 3v 5v and 12v.
Install a rocker switch in this big hole.
They regulate the voltages by rapidly connecting and disconnecting the load circuit switched mode power supply.
These 3 levels are the most common ones needed in our labs so usually pc psus are used by a lot of makers and hackers as their personal bench power supply.
With some modifications the psu can be turned into a good bench power supply.
Convert a computer power supply to a variable bench top lab power supply.
A source of regulated dc voltage is something that every experimenter needs.
If this is the case then drill a 1 4 inch hole nearby and install a miniature toggle switch to power the outputs.
A simple alternative is to use a computer power supply unit psu.
The most common voltages used by digital electronics are 5 volts 3 3 volts and 12 volts.
There are two types of connectors commonly used here an older 20 pin variety version 1 and a newer one version 2 with 24 pins.
Both use molex connectors.
One of the essential pieces of equipment for any electronics workbench is a power supply.
If the psu has no main power switch then wire the rocker switch to power up the psu.
When making a bench supply.
The psu has a standard connector called atx you can reach all of the voltages levels using it.
With these costing you only 25 and having short circuit protection thermal protection overload protection and.
It also has connections for power switches and indicators.
But it turns out a obsolete computer power supply is perfect for the job instead.
Making a power supply for use in labs is not an easy task due to the complexity of the circuit.
A computer atx power supply can be easily converted into a versatile and powerful power supply for your workbench.
Prices today for a lab power supply well exceed 180.
Diy lab bench power supply make using.
To provide high current outputs it needs heavy transformers and semiconductor devices.
A computer power supply converts the ac power from the wall outlet into smaller dc voltages that power the various components of the computer.
A beefy power supply with all the standard output voltages which is what the pc power supply is is an excellent bench supply for hobbyists and budding engineers.