Carol Reed
In Memoriam
- Messages
- 5,533
- Location
- Coolidge, AZ
I need to talk with and electrical/electronic guru. Anybody?
The point is not to charge a battery. It will be used to fire a wood burner pen.
So no smart technology which is where battery chargers are today.
For continued wood burning, especially when branding, an ordinary wood burning pen is far too wimpy. This circuit is further tempered with a dimmer switch to control the "temperature" of the pen.
The Silicon Woodturners club has an article in their newsletter archives where a member did use a manual charger to make one of these.
The problem is manual chargers are very hard to find. NAPA does make one but it is $90.
I did find a circuit on-line but I don't know how to evaluate it.
There are a couple of the manual chargers at harbor freight for about $29 - $39...
http://www.harborfreight.com/2-6-amp-6-12-volt-battery-charger-45005.html
http://www.harborfreight.com/10-2-55-amp-6-12-volt-battery-charger-engine-starter-66783.html