Looking for 60v step down

[Chris Campbell]

Not much looking on my own. Looking for a source to pick up a step down transformer from 110v to 60v-64v range.

Worst case could two 110v to 32v be configured to generate 64v?

[Russ Huber]

Are you seeking 60 VDC or AC?

[Chris Campbell]

2 minutes ago, Russ Huber said:

Are you seeking 60 VDC or AC?

VDC, but AC could bridge over if needed

[Russ Huber]

Go to Amazon and put in "60 volt DC charger". Take your pick for what trips your trigger.

[John McComas]

What size fan?

Half wave single rectifier...  (maybe add a small capacitor if motor runs too rough.)

or:

Used control transformer (240 to 120)... feed  120 into the 240 side and get 60 on the 120 side.

Good luck

Edited December 16, 2022 by John McComas

[Chris Campbell]

1 minute ago, John McComas said:

half wave single rectifier...  (maybe add a small capacitor if motor runs too rough.)

 

Used control transformer (240 to 120) feed  120 into the 240 side and get 60 on the 120 side.

Good luck

Never thought of this. So 240 to 120 reversed will drop into 60?

[John McComas]

It's the old turns ratio Transformer thang.  2:1

[Russ Huber]

In past I had 60 VDC 12" Jandus roundball. I was looking at one of these examples of a 60 VDC electric scooter chargers in the past to run it. I didn't have the fan long enough to get one. Couldn't one of these be made to work to operate the fan if the output coupler was modified to 2 line power? 

60 Volt 3.0 Amp 3-Prong Battery Charger (Standard) - Monster Scooter Parts

 

Edited December 16, 2022 by Russ Huber

[John McComas]

5 minutes ago, Russ Huber said:

In past I had 60 VDC 12" Jandus roundball. I was looking at one of these examples of a 60 VDC electric scooter chargers in the past to run it. I didn't have the fan long enough to get one. Couldn't one of these be made to work to operate the fan if the output coupler was modified to 2 line power? 

60 Volt 3.0 Amp 3-Prong Battery Charger (Standard) - Monster Scooter Parts

 

Some of the "smart" or switching type chargers may, or MAY NOT like being wired to a fan... 

The key phrase that bothers me is "automatic shutoff"  That implies charger has some smarts, and may not work if it doesn't see some residual battery voltage.

Don't get me wrong, I love the light weight and efficiency of switching supplies and chargers, but they might not work with old motors.  Sometimes old "brute force"

designs are needed.

"May the juice be with you!"

[Russ Huber]

2 minutes ago, John McComas said:

Some of the "smart" or switching type chargers may, or MAY NOT like being wired to a fan... 

The key phrase that bothers me is "automatic shutoff"  That implies charger has some smarts, and may not work if it doesn't see some residual battery voltage.

Don't get me wrong, I love the light weight and efficiency of switching supplies and chargers, but they might not work with old motors.  Sometimes old "brute force"

designs are needed.

"May the juice be with you!"

My bet, the higher percentage is on the "may" side of the coin. The fan will never send a message back to the charger it is fully charged.  No need for a rectifier either. 🙂

[Chris Campbell]

What would be ideal is to find a coil that can build decorative box to conceal. Rather dodge the bulky printer transformers. 

 Thinking a doughnut coil step up wired opposite would work, just now need to find a coil 

[Jim Kovar]

I have never had a problem
running any AC/DC universal
motor on half-wave DC.

Easy and cheap!,...
                       ...that's me.  

Edited December 16, 2022 by Jim Kovar

[Russ Huber]

5 minutes ago, Chris Campbell said:

What would be ideal is to find a coil that can build decorative box to conceal. Rather dodge the bulky printer transformers. 

 Thinking a doughnut coil step up wired opposite would work, just now need to find a coil 

You can hide "anything" with a little imagination, Chris. The tag on the transformer was made with my instruction by Donald Coleman. The vented transformer has a new transformer in it hard to see unless you stuck your face up to it. And.........the vented box was not a transformer box to start. I think you get where I'm going. 🙂 Good luck!

[Jim Kovar]

Photo credit:
         Steve Dempsey

120VAC in,...
                   60VDC out.

[Russ Huber]

6 hours ago, Jim Kovar said:

Photo credit:
         Steve Dempsey

120VAC in,...
                   60VDC out.

Actually, that is my photo. I tried running/rectifying a 12" DC fan on a half wave diode once, that didn't work to well. I don't know why, but it didn't run worth a $hit.  The half wave diodes work great for rectifying/slowing down the little fans. They work great on the little fans for a second slower speed.

Edited December 17, 2022 by Russ Huber