Reply by P E Schoen January 9, 20122012-01-09
"John Doe"  wrote in message=20
news:4f0b424e$0$25160$c3e8da3$e408f015@news.astraweb.com...

>omg grrr.id.au wrote:
>> Yes, only one way will make any sense.
> And which way is that?
> So... Somebody who is trying to do homework is chastised. But > someone who needs an answer is treated as student who needs > to learn. You don't like someone else is teaching him, you want > to be the teacher. Sounds like some wannabe mentors aren't > getting enough attention these days. I don't want to learn > electronics right now, I'm too busy doing something else at > the moment. Knowing everything would be nice, but that's > what UseNet is for. Just like when one of you needs technical > information out of your field.
Actually, others have posted their best guess of the connection, and = that is=20 what you asked for. As you said, you could open up another drill and = take a=20 look, if that's all you need. Also, don't "bite the hand that feeds = you", as=20 you seem to be doing here. Most people first do a cursory search for the = information they need and then come here if that doesn't provide the=20 information, or if further discussion is warranted. This IS a design=20 newsgroup, not basics, so you should expect people to discuss the design = aspects, which apparently you have no interest in. Too bad if you don't have time to do your own research, or even open = another=20 drill to get exactly what you need, and instead expect us to spend our = time=20 doing the work for you. Many of us charge customers consulting fees for = what=20 we do, especially if it is a commercial venture, which your application = may=20 be. Here is a circuit I found, but the drain is connected to the motor = via a=20 reversing switch, and the source goes to the battery minus terminal: http://sound.westhost.com/appnotes/an009.htm And even more detail here: http://www.zilog.com/docs/z8encorexp/appnotes/AN0255.pdf Paul
> Other way current will flow through the MOSFET diode, out of > control. > > Grant. >> >> >>.... Phil >> >
> Path:=20 > =
news.astraweb.com!border6.newsrouter.astraweb.com!news.glorb.com!feeder.e= rje.net!eternal-september.org!feeder.eternal-september.org!mx04.eternal-s= eptember.org!.POSTED!not-for-mail
> From: omg grrr.id.au > Newsgroups: sci.electronics.design > Subject: Re: 75332P MOSFET drain connected to which battery terminal? > Date: Sun, 08 Jan 2012 13:21:45 +1100 > Organization: A noiseless patient Spider > Lines: 34 > Message-ID: <luuhg75ejaphoiof938l65h27tilh2tfs8 4ax.com> > References: <4f08e07a$0$3258$c3e8da3$9b4ff22a news.astraweb.com>=20 > <9ms6lmF9ljU1 mid.individual.net> > Mime-Version: 1.0 > Content-Type: text/plain; charset=3Dus-ascii > Content-Transfer-Encoding: 7bit > Injection-Info: mx04.eternal-september.org;=20 > posting-host=3D"xg5bEKBN+6D4lLYgBII8fQ"; logging-data=3D"13985";=20 > mail-complaints-to=3D"abuse eternal-september.org";=20 > posting-account=3D"U2FsdGVkX1/eul+fUBtTkyJucujbpLdp" > X-Newsreader: Forte Agent 6.00/32.1186 > Cancel-Lock: sha1:5sWfYAwTfekPTxkHBnjPlUhnuZk=3D >
Reply by John Doe January 9, 20122012-01-09
omg grrr.id.au wrote:

>>"John Doe" >> >>>I have a 75332P MOSFET on a cordless drill controller heatsink. I > > Fairchild datasheet says: > PART NUMBER PACKAGE BRAND > HUF75332P3 TO-220AB 75332P > > 60A, 55V, 0.019 Ohm, N-Channel UltraFET Power MOSFETs
I had no trouble finding the data, by simply entering the distinct "75332P" into a search engine. From the little I know about electronics, I could not figure out anything from the data, except that the device is a MOSFET.
>>> guess it's part of a pulse width modulator. The drain (flange) >>> connects directly to one of the battery terminals. >>> >>> Does the MOSFET drain go directly to the battery minus/ground >>> terminal? Or does it go to the battery plus terminal? > > Didn't you take a photo before disconnecting the thing?
No, but I can look inside of another drill.
>>** Not enough info. >> >> Surely you can trace the wiring. > > Yes, only one way will make any sense.
And which way is that? So... Somebody who is trying to do homework is chastised. But someone who needs an answer is treated as student who needs to learn. You don't like someone else is teaching him, you want to be the teacher. Sounds like some wannabe mentors aren't getting enough attention these days. I don't want to learn electronics right now, I'm too busy doing something else at the moment. Knowing everything would be nice, but that's what UseNet is for. Just like when one of you needs technical information out of your field. --
> Other way current will flow through the MOSFET diode, out of > control. > > Grant. >> >> >>.... Phil >> >
> Path: news.astraweb.com!border6.newsrouter.astraweb.com!news.glorb.com!feeder.erje.net!eternal-september.org!feeder.eternal-september.org!mx04.eternal-september.org!.POSTED!not-for-mail > From: omg grrr.id.au > Newsgroups: sci.electronics.design > Subject: Re: 75332P MOSFET drain connected to which battery terminal? > Date: Sun, 08 Jan 2012 13:21:45 +1100 > Organization: A noiseless patient Spider > Lines: 34 > Message-ID: <luuhg75ejaphoiof938l65h27tilh2tfs8 4ax.com> > References: <4f08e07a$0$3258$c3e8da3$9b4ff22a news.astraweb.com> <9ms6lmF9ljU1 mid.individual.net> > Mime-Version: 1.0 > Content-Type: text/plain; charset=us-ascii > Content-Transfer-Encoding: 7bit > Injection-Info: mx04.eternal-september.org; posting-host="xg5bEKBN+6D4lLYgBII8fQ"; logging-data="13985"; mail-complaints-to="abuse eternal-september.org"; posting-account="U2FsdGVkX1/eul+fUBtTkyJucujbpLdp" > X-Newsreader: Forte Agent 6.00/32.1186 > Cancel-Lock: sha1:5sWfYAwTfekPTxkHBnjPlUhnuZk= >
Reply by Phil Allison January 9, 20122012-01-09
"Chiron"


** Only ignorant pigs top post.

     Like you.



.... Phil 


Reply by Chiron January 9, 20122012-01-09
Well played...

On Sun, 08 Jan 2012 23:26:06 +0000, John Doe wrote:

> "Phil Allison" <phil_a tpg.com.au> wrote: > >> "Tim Williams" >> >> ** FFS do NOT top post !!!!!! > > Says the pillar of UseNet...
-- Do you mean that you not only want a wrong answer, but a certain wrong answer? -- Tobaben -- Winning isn't everything. It's the only thing. -- Vince Lombardi
Reply by Phil Allison January 8, 20122012-01-08
"P E Schoen"
"Phil Allison"

> ** .. it's London to a Brick ....
to the motor and the source to the battery negative. I've never heard that expression, ** It's mainly an Aussie saying - connected to horse racing. The odds are " London to a brick on " that a particular horse will win or is about to finish first. Google it. ... Phil
Reply by John Doe January 8, 20122012-01-08
"Phil Allison" <phil_a tpg.com.au> wrote:

> "Tim Williams" > > ** FFS do NOT top post !!!!!!
Says the pillar of UseNet... --
> >> >>>> Tab is always drain, but which polarity depends on N or P channel. >>> >>> >>> ** Some power MOSFETS have the source on the tab. >>> >>> In TO3, TO3P, TO220 etc > >> Only RF FETs. Rarely encountered in those packages because the lead >> inductance really sucks. They occupy that small margin between audio >> frequency and switching FETs and proper RF FETs with microstrip leads, and >> usually stud mount heatsinking. > > > ** Lateral power mosfets, made by Hitachi, Renesas and Magnatec / Semelab / > Exicon all have the case or tab as the drain. > > Egs 2SK176, BUZ900, BUZ900P, 2SK226 .... > > > > .... Phil > > > > > > > > > > > >
> Path: news.astraweb.com!border2.newsrouter.astraweb.com!nntp.club.cc.cmu.edu!feeder.erje.net!news2.arglkargh.de!news.albasani.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail > From: "Phil Allison" <phil_a tpg.com.au> > Newsgroups: sci.electronics.design,sci.electronics.basics > Subject: Re: 75332P MOSFET drain connected to which battery terminal? > Date: Mon, 9 Jan 2012 09:54:40 +1100 > Lines: 37 > Message-ID: <9mul5nFfohU1 mid.individual.net> > References: <4f08e07a$0$3258$c3e8da3$9b4ff22a news.astraweb.com> <jeatga$8rr$1 dont-email.me> <9msu41Fu0sU1 mid.individual.net> <jecr4a$hoc$1 dont-email.me> > X-Trace: individual.net CCDPwW9V6MQsYS+UWE3Vvg+AudlqlVpONmx2OGRLYvyNGh858I > Cancel-Lock: sha1:mTr13jfkMABKYNSWPVG+Jkxr6mk= > X-Priority: 3 > X-MSMail-Priority: Normal > X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 > X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 > X-RFC2646: Format=Flowed; Response > >
Reply by Phil Allison January 8, 20122012-01-08
"Phil Allison"

** Corection:

Lateral power mosfets, made by Hitachi, Renesas and Magnatec / Semelab /
 Exicon all have the case or tab as the SOURCE.

  Egs   2SK176, BUZ900, BUZ900P, 2SK226 ....


... Phil 


Reply by Phil Allison January 8, 20122012-01-08
"Tim Williams"

** FFS do NOT  top post !!!!!!

> >>> Tab is always drain, but which polarity depends on N or P channel. >> >> >> ** Some power MOSFETS have the source on the tab. >> >> In TO3, TO3P, TO220 etc
> Only RF FETs. Rarely encountered in those packages because the lead > inductance really sucks. They occupy that small margin between audio > frequency and switching FETs and proper RF FETs with microstrip leads, and > usually stud mount heatsinking.
** Lateral power mosfets, made by Hitachi, Renesas and Magnatec / Semelab / Exicon all have the case or tab as the drain. Egs 2SK176, BUZ900, BUZ900P, 2SK226 .... .... Phil
Reply by Tim Williams January 8, 20122012-01-08
Only RF FETs.  Rarely encountered in those packages because the lead 
inductance really sucks.  They occupy that small margin between audio 
frequency and switching FETs and proper RF FETs with microstrip leads, and 
usually stud mount heatsinking.

Tim

-- 
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms

"Phil Allison" <phil_a@tpg.com.au> wrote in message 
news:9msu41Fu0sU1@mid.individual.net...
> > "Tim Williams" > > >> Tab is always drain, but which polarity depends on N or P channel. > > > ** Some power MOSFETS have the source on the tab. > > In TO3, TO3P, TO220 etc > > > > ... Phil >
Reply by Phil Allison January 8, 20122012-01-08
"Jasen Betts" <jasen@xnet.co.nz>


** Fuck of you sheep shagging cunt .

> > N-channnel mosfets are used as switches with the drain more positive than > the source terminal. > > So unless that mosfet is part of an electronic brake, or reverse > polarity blocking system that terminal goes to the battery positive.
** 10,000% WRONG. You fucking, tenth witted, autistic POS. ... Phil