Transistor circuits, book, devices, etc

[Ralph Mowery]

In article <0KKdneOjE5nwoz7FnZ2dnUU7-W_NnZ2d@earthlink.com>,
mike.terrell@earthlink.net says...

Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.

I quit using the wet(damp) sponge and went to the brass wool thing.
Mainly because as I don't solder very often I did not want to take time
to wet the sponge. The brass thing is always ready.
It does not cool the iron enough to tell.

 

[Phil Hobbs]

On 02/14/2017 12:29 PM, Michael A. Terrell wrote:

Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net

 

[Michael A. Terrell]

Phil Hobbs wrote:

On 02/14/2017 12:29 PM, Michael A. Terrell wrote:
Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?

Believe whatever you want, Phil. I am sick, and I am waiting for
surgery, along with needing to see a Cardiologist. Both have been in the
works from many months with nothing being scheduled.



--
Never piss off an Engineer!

They don't get mad.

They don't get even.

They go for over unity! ;-)

 

[Jim Thompson]

On Wed, 15 Feb 2017 00:36:25 -0500, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

Phil Hobbs wrote:
On 02/14/2017 12:29 PM, Michael A. Terrell wrote:
Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?


Believe whatever you want, Phil. I am sick, and I am waiting for
surgery, along with needing to see a Cardiologist. Both have been in the
works from many months with nothing being scheduled.

Veterans Administration, right? :-(

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

Thinking outside the box... producing elegant solutions.

 

[Phil Hobbs]

On 02/15/2017 12:36 AM, Michael A. Terrell wrote:

Phil Hobbs wrote:
On 02/14/2017 12:29 PM, Michael A. Terrell wrote:
Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?


Believe whatever you want, Phil. I am sick, and I am waiting for
surgery, along with needing to see a Cardiologist. Both have been in the
works from many months with nothing being scheduled.

Sorry about that, Mike. I'll keep you in my prayers.

Cheers

Phil Hobbs


--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net

 

[Benderthe.evilrobot]

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:R9qdnVKTq7ZEdT7FnZ2dnUU7-LHNnZ2d@earthlink.com...

Phil Hobbs wrote:
On 02/14/2017 12:29 PM, Michael A. Terrell wrote:
Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?


Believe whatever you want, Phil. I am sick, and I am waiting for
surgery, along with needing to see a Cardiologist. Both have been in the
works from many months with nothing being scheduled.

My take on this is; its probably likely on poor quality iron plating, I'd
expect good plating to last long enough for the tip to become damaged by
other causes.

The Antex I bought over a decade ago still has its original tip - but I
don't do as much soldering these days.

 

[Michael A. Terrell]

Jim Thompson wrote:

On Wed, 15 Feb 2017 00:36:25 -0500, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Phil Hobbs wrote:
On 02/14/2017 12:29 PM, Michael A. Terrell wrote:
Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?


Believe whatever you want, Phil. I am sick, and I am waiting for
surgery, along with needing to see a Cardiologist. Both have been in the
works from many months with nothing being scheduled.

Veterans Administration, right? :-(

Both have been sent to outside clinics. The VA is even further
backlogged. My eye problem was turned over to the teaching hospital in
Gainseville, and a local cardiologist is supposed to see why my last EKG
scared the hell out of the local VA clinic.


--
Never piss off an Engineer!

They don't get mad.

They don't get even.

They go for over unity! ;-)

 

[Michael A. Terrell]

Phil Hobbs wrote:

On 02/15/2017 12:36 AM, Michael A. Terrell wrote:
Phil Hobbs wrote:
On 02/14/2017 12:29 PM, Michael A. Terrell wrote:
Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?


Believe whatever you want, Phil. I am sick, and I am waiting for
surgery, along with needing to see a Cardiologist. Both have been in the
works from many months with nothing being scheduled.

Sorry about that, Mike. I'll keep you in my prayers.

Thank you.


--
Never piss off an Engineer!

They don't get mad.

They don't get even.

They go for over unity! ;-)

 

[Michael Black]

On Wed, 15 Feb 2017, Benderthe.evilrobot wrote:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:R9qdnVKTq7ZEdT7FnZ2dnUU7-LHNnZ2d@earthlink.com...
Phil Hobbs wrote:
On 02/14/2017 12:29 PM, Michael A. Terrell wrote:
Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.


DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?


Believe whatever you want, Phil. I am sick, and I am waiting for
surgery, along with needing to see a Cardiologist. Both have been in the
works from many months with nothing being scheduled.

My take on this is; its probably likely on poor quality iron plating, I'd
expect good plating to last long enough for the tip to become damaged by
other causes.

The Antex I bought over a decade ago still has its original tip - but I don't
do as much soldering these days.

I never used a "wet" sponge, more like "damp", but the only plated tips
that I've lost have been because I dropped the iron, and the tip actually
broke, or partially. I remember, from very early in the hobby, having
various irons, and the tips really didn't last long. Indeed, much later I
got a cheap desoldering iron (a cheap iron with a suction bulb attached)
and that tip didn't last long, a remembrance of things past. But once I
switched to that modular iron I think it wsa from Ungar, the plates were
always plated, and I never had to replace any from long term use. Just
breakage.

Michael

 

[Benderthe.evilrobot]

"Michael Black" <et472@ncf.ca> wrote in message
news:alpine.LNX.2.02.1702151537440.12036@darkstar.example.org...

On Wed, 15 Feb 2017, Benderthe.evilrobot wrote:


"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:R9qdnVKTq7ZEdT7FnZ2dnUU7-LHNnZ2d@earthlink.com...
Phil Hobbs wrote:
On 02/14/2017 12:29 PM, Michael A. Terrell wrote:
Phil Hobbs wrote:

The usual problems people have with learning to solder are:

1. Dirty tips. Use a wet cellulose sponge or some brass wool every
time you pick up the iron.

DAMP, not WET! If the tip cools unevenly, you will cause
micro-fractures in the iron plating, causing premature tip failure.


Data?

Believe whatever you want, Phil. I am sick, and I am waiting for
surgery, along with needing to see a Cardiologist. Both have been in the
works from many months with nothing being scheduled.

My take on this is; its probably likely on poor quality iron plating, I'd
expect good plating to last long enough for the tip to become damaged by
other causes.

The Antex I bought over a decade ago still has its original tip - but I
don't do as much soldering these days.
I never used a "wet" sponge, more like "damp", but the only plated tips
that I've lost have been because I dropped the iron, and the tip actually
broke, or partially. I remember, from very early in the hobby, having
various irons, and the tips really didn't last long.

Some irons I've had in the past, only had the tips plated around the
circumference - I ended up wondering what was the point of any plating at
all.

The Weller TCP1 fell by the wayside when I started getting tips that shed
their plating inside the element tube - the copper oxide expanded and
compacted, it was near impossible to remove the faulty tip without wrecking
the element.

 

[John Fields]

On Thu, 09 Feb 2017 20:59:25 -0800, John Larkin
<jjlarkin@highlandtechnology.com> wrote:

I like AoE for some great parts, but I'm not
"learning" electronics any more.

---
So you've plateaued and have nowhere to go but sideways?

John Fields

 

[John Larkin]

On Sat, 01 Apr 2017 22:20:39 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Thu, 09 Feb 2017 20:59:25 -0800, John Larkin
jjlarkin@highlandtechnology.com> wrote:

I like AoE for some great parts, but I'm not
"learning" electronics any more.

---
So you've plateaued and have nowhere to go but sideways?

John Fields

I'm still learning a lot, but mostly in the lunatic fringes; I don't
need an introductory text any more.

There are big chunks of AoE that are useful for non-beginners. I
learned about jfet impact ionization from AoE, something that I'd
missed somehow. The tables of low-noise transistors are amazing
(except that Win listed my favorite NPN gumdrop, the BCX70, dead
last.)

I'm mentioned in AoE3, which helps. I think you are, too.

My grandson is getting interested in electronics, so I just sent him a
copy of AoE. Maybe he'll get into analog design, Real Electronics.
He's done some coding (everybody seems to be into coding) and doesn't
like it much, so the kid may have potential.


--

John Larkin Highland Technology, Inc

lunatic fringe electronics