ESP113 Power supply mod from 12V to 13.8V

VK3ZYZ

Moderator
ESP113.jpg
To increase the 12V ESP113 power supply voltage to 13.8V, the following mods need to be done.
HP ESP113_13V8Mod2.JPG
The 6K8 between IC pins 3 and 4 increase the over voltage cutoff a bit, while the 68K from pot center to 0V alows the voltage to be increased.
 

VK3YNV

Moderator
Thanks Denys, That's what I was trying to find. I knew you emailed it to me earlier but I couldn't find it.

I just did the mods to a power supply for you to pass on to Bob (BLD). I don't have 68K in 1206, but 47K works fine, adjustment range is from 12-14 or so.

The original power on mods are from here.. https://www.rcgroups.com/forums/showthread.php?358340-Mod-12VDC-32Amp-Power-Supply-Need-Help!

So here are the pin outs.

IMG_3747.JPG
IMG_3748.JPG

Supposed to be good for 32Amps @ 12V and 5Amps @ 5V. Probably worth while putting a USB connector on the 5V tab.
 
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