DIY Tesla Switch Guide

[geotron]

There seems to be an interesting assortment of CD4011
chips with suffix-names I'm unfamiliar with.

At 100+ chip results, should I mainly be concerned with
their physical dimensions?

[Groundloop]

@geotron,

My replica did work as designed and the switch did do what it was supose to do,
but did not do anything that even closely can be considered over unity. The
switch itself did use 30mA just to run without a load. With load, the five 200mA
batteries did drain in 90 minutes. The switching did not produce enough "extra"
power to keep the run battery charged with the charge switch closed.

That said, the method of using audio transformers to control the transistors on
and off did work. So if you build a 4011 based oscillator then it is possible to
use transformers to control the transistors. Use a 4000 series IC. Those IC's
can take up to max. 18 volt. The 74 series IC's is designed to run on 5 volt.

Groundloop.

[geotron]

Hmm... this is the one I'm considering -

CD40117BEE4

It is the only one at Mouser that they seem to stock in
the CD4011 Counter IC category - all the others are listed as
Gates, which I'm kind of thinking would be the wrong thing...

[Groundloop]

@geotron,

You need to use a CD4011BE or compatible.
This IC runs from 3 to 15 volt.

The CD40117BEE4 will NOT work in your oscillator.

Groundloop.

[grizli]

Did anyone tested 4 battery switch SO FAR '?

what was OU result ?