Weather-Above 1 wire fuse protection Mod

Welcome to Weather-Above

Blown fuse indicator to protect 12 V supply lines

Artwork and layout designed by

Michael Parry Thomas

I have introduced this circuit to the 12 V supply lines on the 1 wire weather station

I am using the hobby boards, power injection circuit, after having a small, short on a component

and damaging several transformers I decided that the system needs some sort of protection.

You could easily add a inline fuse to your system

I wanted something that would give me a visual indication on the fuse status, the LED will continually be on

if a short occurs, the fuse will blow and the LED will flash

1A 2 pin terminal block on the board this is where the fuse holder

is connected or you can removed the terminal block and solder

a fuse, terminal holder

The IN CN2 terminal is going to be connected to a chassis-Mount 2.1 mm. DC socket from Maplin Electronics

The OUT CN1 terminal block will have a short lead to a D. C. power Plug 2.1 mm

The power injection board from hobby boards uses a transformer with a power plug 2.1 mm.

Plug the transform into the chassis mounted socket coming from the fuse protection circuit

Then plug in the power plug from the fuse protection circuit into the power injection board box from hobby boards

Notes

1 / Chassis-Mount 2.1 mm. DC socket

1 / DC Power plug 2.1 mm

The new circuit will fit into a standard BT box Size 65mm x 65mm

CN3

1 amp Fuse + Terminal [CN3]

CN1