– Clip 1 Introduction – Clip 2 Course Description – Clip 3 Test Parameters – Clip 4 Test Equipment – Clip 5 Overview – Clip 6 Battery construction – Clip 7 Battery assembly and test – Clip 8 24 hour test – Clip 9 Summary – Clip 10 End of part 3
Clip 1
Clip 1
We build our earth battery as a single cell. This allows us to have full control over the process and can scale as required.
Clip 2
Clip2
Earth Battery Part 3
Earth Battery Design and Construction
Clip 3
Clip 3
Test Parameters
1. Galvanised Steel tube
2. Graphite or Carbon rod
3. Terracotta clay
4. Watertight plastic container
Clip 4
Clip 4
Test Equipment
Tools– Keysight / Agilent , Bench Top DMM 34450 A
Clip 5
Clip 5
Overview
We use a scaffolding steel tube which is galvanised on both sides. This is our cathode with a layer of zinc. As anode we use a graphite or carbon rod. The container is a standard medical container which can hold liquid and is watertight. The filling material is terracota clay, used for making pottery.
Clip 6
Clip 6
Here the construction of the battery is outlined with rod holder at the bottom of the jar.
Clip 7
Clip 7
After the steel tube is covered with wrapping paper we fill in the clay. The clay is pressed in to provide a good conductive path between the electrodes. We insert the carbon rod and take a measurement. We reach between 0.8 and 0.9 volt. The current is around 2.3 mA. Voltage drop occurs when the current is measured. The battery recovers fast.
Clip 8
Clip 8
The battery voltage increases close to 1 volt and the current is starting at 2.7 mA. it takes some time for the moisture to penetrate the wrapping paper. with increased surface area the electrical potential rises.
Clip 9
Clip 9
Summary
We design a single earth battery cell because my first approach with the flower pot and with aluminum as the cathode was not working out. In order to create proper working cells we need to have a container we can seal. I was using wax before but that was messy and did not work either. We use Zinc as Cathode material either in pure form from sheet metal or from a scaffolding steel tube which is galvanised. Our Anode is a graphite or carbon rod of 6 mm diameter and 10 cm length. our filling material is red terracotta clay. It has micro fine particles and let the current flow nicely. We have however to protect the Cathode by wrapping it with a layer of wrapping paper. We do not want that the battery is discharging without the load. We press the clay inside the tube and add a placeholder for the graphite rod at the bottom to keep the rod straight in place. After inserting the rod, press the clay around the rod that a tight fit is guaranteed, otherwise your voltage and current will drop. next will be an array with 8 or more pots for the use in the ground with the nathan stubblefield coil.
Clip 10
Clip 10
End of Part 3