Re: Transistor booster design

On Aug 2, 11:58 am, John Devereux <jdREM...@xxxxxxxxxxxxxxxxxx> wrote:
John Larkin <jjlar...@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> writes:
John Larkin wrote:

On Sun, 29 Jul 2007 12:15:53 -0700, linnix <m...@xxxxxxxxxxxxxxxxxx>
wrote:

I can't find the old thread. But here is the two transistors booster
model and schematic, as promised.

For BC847B, 6V to 15V @ 1ma:

http://linnix.com/power/main.php?vcc=6&coil=330&load=15

Blocking oscillator boost converter:

http://s2.supload.com/free/BlockOsc.jpg/view/

So draw us a boost converter that has no current spikes.

I liked your tinylogic circuit - but I think linnix wants to do it
just with discrete semis and an inductor. I suppose transistors are
*very* cheap.

Main problem is building the additional CMOS Schmitt trigger cell.
Transistors are cheap, but additional processes are expensive.


I wonder is there a better 2-transistor circuit?

--

John Devereux


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