Electronics Forum / Electronics / December 2004

Hello again,
I have a small question about  BJT.
I know that Vbe has to be at least 0.7 in most case. But I have a circuit
here  (juste npn connected to power supply ) with the base grounded. The

G'day and Season's Greetings,
  A bloke in Kiwi Land has asked me if I know of any second hand Poul
Kirk Electronics (PKE) CSC mixing desks which might be for sale.
Apparently they were common in radio studios.

Just wondering is there any circuits out there or web sites in constructing
a simple oscilating circuit with a power transistor without having to use a
lm555 timer or any other chip just to fire up a ignition coil or a step up
transformer.

No cfl inverter kits at either Jaycar or Dick Smith on the Gold Coast.
Might as well go back to living in the bush, extracting the knife from
my back (missus attack).
Jaycar were 'out of stock' and Dick Smith don't appear to list it.

Just want to drop by and say, today is the 1-year anniversory since I first
recharged a non-rechargeable battery.

I just need some help.
I am searching for information about Filter Banks:
Overview
Structures

I'm an evil scientist and I want to create an evil robot of doom.What do I need?

I've had a STB for a few months now and find it great, but because I'm
getting marginal signal levels on most channels I'm thinking of
upgrading my antenna. I get drop outs on ABC and SBS fairly often now.
Can't complain though I guess, I couldn't get them at all before! But

This is something very basic, I have been using it for a while, When you two
capacitors in series, you end up having the equivalent of one capacitor that
is lower in Farad then the lowest capacitor. My question is ,WHY . One
capacitor charges, well they all have to charge at the ...

I have one of these receivers which I can't use on AM radio becuase it
will only tune in at 10KHz steps but in my area stations are allocated in
9KHz increments.  According to the manual it can tune in 9KHz OR 10KHz
steps but no info on how to set it.  I presume it's factory set ...

I've bought a marine CD/Stereo unit (Jensen MCD5112) to install in a
swimming pool building in Australia and am stumped as to how to choose the
most economical 240 VAC/12 VDC power supply for it and would appreciate any
advice.

I walked by a big bin of these at the OSH store yesterday evening, and I
couldn't resist the temptation to buy one ($6.97) just for its
collectible value.  It's a Lentek 'Mosquito Contro' which is a bit
bigger than a business card and about 3/8" (10mm) thick (not counting

This article will give you step-by-step instructions on how to
successfully obtain your free iPod using freeipods.com for as little as
$1. Many think that this site is a scam or a pyrimid sceam. A scam no,
a pyrimid yes, a sceam no. You do have to put forth some sort of effort

Hi to all,
Former regular poster, 16 year old   "Arpit " has not been heard from on
this or other NGs since late May this year  -  according to the Google
Groups Archive.

Hey there
when placed in the sun, a small led gives off a reading on my voltmeter,
goes up and down. The only thing is, how do i know what reverse
current/voltage im going to get just by looking at the information? is there