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.
A 9VDC regulated power supply (i.e. PSA) for less than $3
- laurie
- Posts: 1654
- Joined: Fri Aug 17, 2018 2:07 am
- Location: Canada
- SBZ: Multi Platinum
- Bossarea: Multi Platinum
Re: A 9VDC regulated power supply (i.e. PSA) for less than $3
An update.
The actual power supply shown above has been in use in my "workshop" for years now. There have been a couple of pedals where it has not worked well - the pedals are noisy when plugged into the adapter, and perfectly silent on battery.
So I have a new recommendation - when taking this approach, use an adapter that is specifically designed to power audio equipment. I believe that the one above is designed to power a home computer router.
I have swapped over to a "Plantronics" branded adapter. Plantronics make telephone headsets, so the adapter needs to not cause issues with audio gear. The Plantronics adapter is dead silent on the pedals that I was having trouble with using the adapter shown above.
Again the Plantronics adapter cost me $2 at a local thrift store, and the plug was a few pennies.
I'll post a pic later of the actual Plantronics adapter I'm now using.
The actual power supply shown above has been in use in my "workshop" for years now. There have been a couple of pedals where it has not worked well - the pedals are noisy when plugged into the adapter, and perfectly silent on battery.
So I have a new recommendation - when taking this approach, use an adapter that is specifically designed to power audio equipment. I believe that the one above is designed to power a home computer router.
I have swapped over to a "Plantronics" branded adapter. Plantronics make telephone headsets, so the adapter needs to not cause issues with audio gear. The Plantronics adapter is dead silent on the pedals that I was having trouble with using the adapter shown above.
Again the Plantronics adapter cost me $2 at a local thrift store, and the plug was a few pennies.
I'll post a pic later of the actual Plantronics adapter I'm now using.
Last edited by laurie on Fri Jan 20, 2023 12:17 am, edited 2 times in total.
- laurie
- Posts: 1654
- Joined: Fri Aug 17, 2018 2:07 am
- Location: Canada
- SBZ: Multi Platinum
- Bossarea: Multi Platinum
Re: A 9VDC regulated power supply (i.e. PSA) for less than $3
Measures 9.88VDC with no load. Works perfectly as a "PSA" supply.
.
.