Igors switcher (EMF recycler2)

[gyulasun]

Hi DRSpark,

I included a slightly modified schematics to improve the switches performance.
It involves the addition of 3 diodes and 2 resistors. The diodes preferably are Germanium or Schottky types to reduce forward power loss but for a test the Si 1N4001-1N4007 types would serve. The resistors help to make conducting path for the Gate-Source control voltage, making switch on / off to happen more easier. The resistors also dissipate a little power. I did not build this circuit yet.

What is the cold resistance of your 6V bulb?  Or how many Watts is its power?

Also looking forward to see the scope shots Igor asked for.

Regards
Gyula

[hartiberlin]

Hi Spark,
well done.
Could you pleae post scopeshots directly across R1 and also across
the Lightbulb?

I want to see the voltage ( and thus the current) in these devices.
Many thanks.

Regards, Stefan.

[hartiberlin]

Hi Spark,
what happens, if you put a bigger choke inductance in series with the L1 bulb ?

Or what happened with your transformer version ?
Why do you leave it out now ?
Many thanks.

Regards, Stefan.

[drspark]

Hi People,

Were to start?
Turned on scope, it will be an hour or more stablizing (old tektronix Type 502)....

Stephan, work on the transformer version is as soon as the zeners and transformer I ordered last night, arrive. After the fets did not burn up and the circuit function like relay circuit, I decide to get the rest of the parts. Also ordered 4more 4700uf to replace the 220 and 270uf caps. These new ones dont want to leak like the old ones

Gyula, great! I will scout around for the diodes and resisters will be easy to make that change. But first I want to get to know this circuit so I can (get the scope shots) and a good feel for how this behaves, then I will be able to tell the differance with the changes you sugjest.

People, it ran all night and is still running start bat 11.3v now almost 12hours later 10.03v

6volt bulb  same as the ones from last month. 1.6 - 1.7 ohms cold.

Still no traces on scope....   it needs time ill be back later with the scope photos...
Im going to switch to computer type powersupply and leave the batterys for allnight runs untill they discharge........

Spark

[hartiberlin]

Hi Spark,
hopefully your scope will work again.
Without a scope such work can?t be analyzed exactly.

Looking forward to the upcoming scopeshots and good
luck on your battery tests.-
Many thanks.

Regards, Stefan.