Tesla Switch need help

[Groundloop]

@All,

I have four 4,8 Volt 2000mA Nickel Cadmium batteries. Does anybody here know a safe way of initial charging those batteries from a lab power supply? I do not have a NiCad charger so I need to make one. Any circuit drawings of a simple NiCad charger? I will be glad to get some help on this.

[EDIT] My NiCads are 700mA/h, not 2000mA as stated.

Groundloop.

[Paul-R]

I'm wondering if you could post the theory of operation for the Tesla Switch.
Thank you.

Try this
http://www.panaceauniversity.org/Chapter6.pdf

Read page 18

...and then alter the URL to Chapter 1 for further information
which may be useful to know about at some future time.

Paul.

Sorry, fellas. I got this wrong. It should be:
http://www.panaceauniversity.org/Chapter5.pdf
(specifically: page 5 to page 16).
Paul.

[gyulasun]

@All,

I have four 4,8 Volt 2000mA Nickel Cadmium batteries. Does anybody here know a safe way of initial charging those batteries from a lab power supply? I do not have a NiCad charger so I need to make one. Any circuit drawings of a simple NiCad charger? I will be glad to get some help on this.

Groundloop.

Hi,  here are two links: http://www.uoguelph.ca/~antoon/gadgets/ccharger.htm and http://www.zen22142.zen.co.uk/Circuits/Power/nicad.htm

There is a third one with the LM317 adjustable voltage regulator: http://www.dprg.org/projects/1999-05a/
You have a minimum of 4*4.8 V input voltage need + the required voltage drop of either the LM317 or the transistors, so you need to choose your power supply output accordingly. I think you need some heat sink on the active pass device too.

rgds, Gyula

[Groundloop]

@Paul-R,

Thanks for providing a link to that pdf document.

@Gyulasun,

Thanks for providing the links to the NiCad chargers.

Groundloop.

[Groundloop]

@All,

I finally got my tswitch soldered (minus the regulator).
Next step will be ordering the regulator IC and then make
a charger for the 4,8 Volt NiCad batteries. Will take some
time.

Groundloop.