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Mini charger 1.5vdc to 400vac

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wasssup1990

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Does anyone know the components for this device. **broken link removed** For example how much ohm's is in the resister?
What type of transister and tranformer?
 
Hi wasssup,

I had a look at this item.
Its only a one transistor oscillator
using a small transformer.

The circuit you use would depend on the
transformer connections and windings.

The resistor you use would depend on
the transistor, and the circuit.

It is not a powerful unit.
Maybe 2 watts max.

The circuit would be similar to the
attachment.

If you get a small transformer that you
think is a likely one, post here, and
someone will tell you how check if it
will do what you want.

John
 

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  • 400v.jpg
    400v.jpg
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WHAT :? I'm not understanding this. How do you put DC in and get AC out. So that is a 1-266 step up transformer :? What is he using that transistor for :? Surely it isn't pulsating the DC :?

Totally confused.
 
Hi herbymcduff,

Well, yes, in a manner of speaking, it is pulsating.
when you feed the output back to the input,
the transistor bounces around, its output is driving
its input, its called positive feed back.

Thats about as non-technical as i can get.

Oscillators are a study in themselves, there are many
types.

The winding with many turns would give the
step-up output, if the circuit doesn't self-excite
then try reversing either the winding in the collector
path, or the winding in the base path.
The feed back has to be 'in phase' with the output
to cause oscillation.

I hope my explanation has not left you more confused.

Regards, John
 
I think this circuit can`t work as oscillator. My opinion: for oscillator need minimum one capacitor.
 
Yes, if you want to determine the frequency.
But there's always some capacitance between components.
I guess that would run at about 12k/c,
maybe higher, depends on the transformer.

Its difficult to say what the circuit actually is,
but its something like that.
 
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