A 9VDC regulated power supply (i.e. PSA) for less than $3
Posted: Wed Oct 16, 2019 12:55 pm
I think I posted one of these on the old forum...
Here's how to do it:
1) Go to thrift store and find a 9V switched mode power supply. The switched mode supplies are small and very light, and the definitive way of knowing is if it says something like "Input 100-240V".
2) Use a meter to check the output voltage, and the polarity of the output plug.
3) Change the output plug if needed.
.
.
Here is the one I did this morning.
.
This is the power supply I picked up for CAD$1.99 at Value Village. It tested at 9.35VDC which is perfect. It had a Boss-type plug but it was the wrong polarity (center positive). .
.
.
.
New plug. Cost about CAD$1.
Here's how to do it:
1) Go to thrift store and find a 9V switched mode power supply. The switched mode supplies are small and very light, and the definitive way of knowing is if it says something like "Input 100-240V".
2) Use a meter to check the output voltage, and the polarity of the output plug.
3) Change the output plug if needed.
.
.
Here is the one I did this morning.
.
This is the power supply I picked up for CAD$1.99 at Value Village. It tested at 9.35VDC which is perfect. It had a Boss-type plug but it was the wrong polarity (center positive). .
.
.
.
New plug. Cost about CAD$1.