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readeraz  
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 More options Jul 31, 11:48 am
Newsgroups: sci.electronics.design
From: readeraz <cnni...@126.com>
Date: Wed, 30 Jul 2008 20:48:45 -0700 (PDT)
Local: Thurs, Jul 31 2008 11:48 am
Subject: Re: Whats different between these two circuits?
most of the rcc is working as negtive action so that when the
trnsistor shut off, the energy is transported to load at second
winding. and this avoid super higher voltage apply on the transistor.

When the transistor become turen on from off, more circuit uses a
capactor as an accelerator to force trnasistor on speedly. thats why I
pulzzed their difference.

That seems there is no too distinct between them.

Hoever, thank you very much for your wonderful explain.

On Jul 24, 9:13 am, d...@manx.misty.com (Don Klipstein) wrote:

> In <a231f34f-d2dd-4f2c-a7f0-9c2c45e59...@i24g2000prf.googlegroups.com>,
>   Both resemble variants of the Hartley oscillator, with the capacitor
> across the tapped inductor removed.

>   A blocking oscillator has the oscillation feedback path through a
> resistor and capacitor in parallel.  During the half-cycle where the
> transistor conducts, positive feedbck is through the capacitor.  Once the
> capacitor has become excessively charged to maintain enough


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