I don't know much about switching supplies. But if you had to sink
It should be ok, but the 5.3V wont be accurate in any way. The drop will vary according to temperature, current and initial tolerances.
No problems if you use appropriate Schottky, something like the Vishay SB520, you want to use as low a Vr rated diode you can get away with and of course relatively high If http://www.vishay.com/docs/88721/88721.pdf
Thanks all. I will rework the board and test once.
P E Schoen <paul@peschoen.com> wrote in message
news:kdj0bd$6ut$1@dont-email.me...
I have a desk lamp, with a magnifier and a 12W T4 circline fluorescent bulb,
that I use constantly for working on PCBs and electronics projects in
general. I bought it several years ago and recently it started flickering
and then died. I replaced the bulb, but still no joy, and after replacing
the blown fuse and two damaged transistors, I found that the little
transformer had an open winding.
/open circuit
Does anyone know if there is any problem with this?
Thanks,
Paul
PS: GO RAVENS!!!!!
+++++++++
so the original lamp was conventional ballast and 2 pin bimetal switch
starter ?
no. there is a small electronic driver - plays hell with FM radio
Let's sing it for the people here.
On Sat, 26 Jan 2013 20:25:13 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 1/26/2013 8:20 PM, Jim Thompson wrote:
On Sat, 26 Jan 2013 20:04:41 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 1/26/2013 7:49 PM, Jim Thompson wrote:
On Sat, 26 Jan 2013 19:39:09 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 1/26/2013 7:31 PM, Jim Thompson wrote:
On Sat, 26 Jan 2013 18:19:45 -0600, flipper <flipper@fish.net> wrote:
[snip]
Hey, flubber, who do you work for ?
I am pleased to say, not for you. And, btw, if you were to try and get
me 'unemployed' that's actionable.
...Jim Thompson
Maybe. If I lived in Californica. Here, in Arizona, we simply call
it "kicking ass".
I have posted the microphone model. Your take on it should be good
for many laughs.
Keep in mind, "your take" will be public and conveyable to your boss
:-}
That's the old disinterested search for truth in action, I expect. Try
to make anybody who disagrees lose their job.
It wasn't simple disagreement... it was disagreeable stone throwing by
a clueless individual. When you have no clue you're supposed to ask
to be taught, not rudely dispute the professor.
"Noooobody expects the Spanish Inquisition!"
*** Like I say, read the thread from the very beginning. ***
Until I got a ton of wrong-minded crap, I did not call a punk a punk.
Not until flubber persisted... and he REALLY IS DUMB AS A STUMP on
circuits.
Cheers
Phil Hobbs
Now go away and thump your Bible, and stop interjecting yourself in a
thread you not only didn't follow, but have no clue yourself... and no
lists of your wonderful "bootstraps", show me some analysis >:-}
...Jim Thompson
You really are a piece of work, Jim. Is there anything you won't resort
to, to sustain your self-image?
I continue to respect your technical competence highly, but I sure
wouldn't ask you to my house.
Funny, I'm the one who gets regularly accused of Bible-thumping, and
it's you ;-)
Cheers
Phil Hobbs
Sorry, I don't have to sustain a self-image... I CAN analyze (or
design) such stuff as in this thread, effortlessly.
Capability doesn't require the standard leftist need for pumped-up
self-image.
Which no doubt is why you exude quiet self-confidence, rather than, say,
threatening people who disagree with losing their jobs, or threatening
to beat them up, or shoot them, or threatening to set your lawyer on
them for tortious interference. I see.
Cheers
Phil Hobbs
Phil, Please!
Read the whole (set of) threads. I did not start up combative. When
I tried to explain the snags in the circuit I got set upon by several
clueless individuals.
When I suggested they analyze the circuit and then submitted my own
analysis it only got worse... the clueless individuals persisted that
I was wrong.
So I properly named them... punks >:-}
Sorry, I'm not a "turn-the-other-cheek" type.
Right now we have a group dominated by _incompetent_ punks.
Personally, I'm going to start hunting them down, whether you like it
or not, with the specific intent to get incompetents fired. With lots
of competent people out there seeking jobs, it should be easy.
flubber throws forth some Californica word, "actionable". I'm going
to give him "actionable"... every future friggin' word he utters
better be fact, or his ass is grass.
...Jim Thompson
If you want ot hear it, compute it, convert it to WAV, and play
They may do the same sort of thing with shipments to the US. I recently
thanx
Probably needs a fev rounds from a Kalashnikov.
I'm fairly sure that USPS is paid to deliver the goods, just they
it seems 400Kg of small batteries would half the price of 400Kg of big
That's not an engineering document.
No, idiot, it IS an engineering reference guide.
On Sat, 26 Jan 2013 18:20:59 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:
On Sat, 26 Jan 2013 20:04:41 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 1/26/2013 7:49 PM, Jim Thompson wrote:
On Sat, 26 Jan 2013 19:39:09 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 1/26/2013 7:31 PM, Jim Thompson wrote:
On Sat, 26 Jan 2013 18:19:45 -0600, flipper <flipper@fish.net> wrote:
[snip]
Hey, flubber, who do you work for ?
I am pleased to say, not for you. And, btw, if you were to try and get
me 'unemployed' that's actionable.
...Jim Thompson
Maybe. If I lived in Californica. Here, in Arizona, we simply call
it "kicking ass".
I have posted the microphone model. Your take on it should be good
for many laughs.
Keep in mind, "your take" will be public and conveyable to your boss
:-}
That's the old disinterested search for truth in action, I expect. Try
to make anybody who disagrees lose their job.
It wasn't simple disagreement... it was disagreeable stone throwing by
a clueless individual. When you have no clue you're supposed to ask
to be taught, not rudely dispute the professor.
"Noooobody expects the Spanish Inquisition!"
*** Like I say, read the thread from the very beginning. ***
Until I got a ton of wrong-minded crap, I did not call a punk a punk.
Not until flubber persisted... and he REALLY IS DUMB AS A STUMP on
circuits.
Cheers
Phil Hobbs
Now go away and thump your Bible, and stop interjecting yourself in a
thread you not only didn't follow, but have no clue yourself... and no
lists of your wonderful "bootstraps", show me some analysis >:-}
...Jim Thompson
You really are a piece of work, Jim. Is there anything you won't resort
to, to sustain your self-image?
I continue to respect your technical competence highly, but I sure
wouldn't ask you to my house.
Funny, I'm the one who gets regularly accused of Bible-thumping, and
it's you ;-)
Cheers
Phil Hobbs
Sorry, I don't have to sustain a self-image... I CAN analyze (or
design) such stuff as in this thread, effortlessly.
Capability doesn't require the standard leftist need for pumped-up
self-image.
...Jim Thompson
And my posts were RESPONSES to a DUMB AS A STUMP attacker.
You do notice flubber is slinking away >:-}
...Jim Thompson
Maybe, or he's just letting nature take its course, Jim.
if you don't mind a small amount of energy loss in
Engineers don't assemble connectors. It looks like a shop floor thing.
That thing has no drawing number, no title, no rev, no date, no author, no