hi everybody

i just wanted to know what wattage soldering iron should be used for
normal electronic works (P C B ).

at present i have a jumbo size soldering iron which i use for
electrical
purposes which has a big tip.

also is there any tip sizes (if at all there are) for soldering iron
to be used for P C B because the one i have is a bit too big for P C
B (thats what i think).

aditya n

hi everybody

i just wanted to know what wattage soldering iron should be used for
normal electronic works (P C B ).

at present i have a jumbo size soldering iron which i use for
electrical
purposes which has a big tip.

also is there any tip sizes (if at all there are) for soldering iron
to be used for P C B because the one i have is a bit too big for P C
B (thats what i think).

aditya n

I just want to know how you go about building a homemade
transformer. Thanks

It's so simple, a 3 year old could do it. On the other hand, it's so
difficult, you'd need a engineering/manufacturing facility to do it. Both
statements are completely true - depending on what characteristics the
transformer has.

It is air core? Iron core? etc.

What frequency(s) does it operate on? Voltages? Currents?

How many sections or windings?

What is/are the intended load(s)?

What kind of (if any) shielding is required?

What is it's ultimate function?

And a lot more questions I'm sure.

There are as many possible configurations for a transformer as
proverbial grains of sand. So you can see, a bit more information is needed
before anyone can give you anything close to a usable response to your
question.

Bob

I just want to know how you go about building a homemade
transformer. Thanks

Hi,

I have a circuit that tries to run a solenoid by using a reed relay to connect the power. The circuit+relay works fine if I try and connect a motor, and the solenoid works fine if I just connect it direct to the power source. it seems like maybe my relay is switching on and off really fast instead of just staying on, does this seem possible and could it be the problem?

any advice appreciated,

Mark

Here's a couple of simple things I did with some Allegro
hall sensors. They make it real easy these days. The
ones I used only have 3 pins: +5V, ground, and output.
I don't know about max frequency, but you can follow
the links to their site. There's linear and switching
output types. And one is a switch that turns on when
it sees either pole of the magnet. Free samples online.

Magnetic Sensor as a Control Voltage Source


Whirly-Whirler LFO
Spinning plate toy and magnetic sensor as a
mechanical Low Frequency Oscillator.


- -- - Toby Paddock

----------
bbranham@... wrote:

Does anyone know what type of a component I can use
for an inductance sensor (kind used in like automotive
timing lights) I would like to generate a logic pulse per
voltage pulse for use in a Basic stamp Tachometer for
use on small engines. Will se up to absol. max 10,000
rpm's. Any body have any ideas. Otherwise does
anyone have a good expanation of how a hall effect
sensor works and if i could use it to send a pulse out
as the magnet of the flywheel spins past the sensor.
THanks all

begin 600 WINMAIL.DAT
M>)&#92;^(AX%`0:0" `$```````!``$``0>0!@`(````Y 0```````#H``$(@ <`
M& ```$E032Y-:6-R;W-O9G0@36%I;"Y.;W1E`#$(`0V ! `"`````@`"``$$
MD 8`6 $```$````,`````P``, ,````+``&#92;.``````(!_P&#92;!````70``````
M``"!*Q^DOJ,0&9UN`-T!#U0"`````$5L96-T<F]N:6-S7S$P,4!Y86AO;V=R
M;W5P<RYC;VT`4TU44 !%;&5C=')O;FEC<U&#92;Q,#% >6%H;V]G<F]U<',N8V]M
M`````!X``C !````!0```%--5% `````'@`#, $````@````16QE8W1R;VYI
M8W-?,3 Q0'EA:&]O9W)O=7!S+F-O;0`#`!4,`0````,`_@&#92;&````'@`!, $`
M```B````)T5L96-T<F]N:6-S7S$P,4!Y86AO;V=R;W5P<RYC;VTG`````@$+
M, $````E````4TU44#I%3$5#5%)/3DE#4U&#92;Q,#% 64%(3T]'4D]54%,N0T]-
M``````,``#D`````"P! .@$````"`?8/`0````0````````#74@!!( !`#0`
M``!213H@6T5L96-T<F]N:6-S7S$P,5T@4G!M(%-E;G-O<B H:6YD=6-T86YC
M92!T>7!E/RD`KA$!!8 #``X```#1!P<`"@`6``@`!P`"`! !`2" `P`.````
MT0<'``H`%@`(``<``@`0`0$)@ $`(0```$9%03<Y-34V0D$P.4,Q,3%!-T$U
M,38U1C(P-T5&1C8T`$('`0.0!@``!@``% ````L`(P```````P`F```````+
M`"D```````,`+@```````P`V``````! `#D`X*L,><<)P0$>`' ``0```#0`
M``!213H@6T5L96-T<F]N:6-S7S$P,5T@4G!M(%-E;G-O<B H:6YD=6-T86YC
M92!T>7!E/RD``@%Q``$````6`````<$)QW>M&&LT075U$=6E#D1%4U0`````
M'@`># $````%````4TU44 `````>`!&#92;,`0```!0```!T<&%D9&]C:T!S96%N
M970N8V]M``,`!A!PW$RU`P`'$*H#```>``@0`0```&4```!(15)%4T%#3U50
M3$5/1E-)35!,151(24Y'4TE$2417251(4T]-14%,3$5'4D](04Q,4T5.4T]2
M4U1(15E-04M%251214%,14%3651(15-%1$%94U1(14].15-)55-%1$].3%E(
M``````(!"1 !````600``%4$``"E!@``3%I&=8,]<U'_``H!#P(5`J0#Y 7K
M`H,`4!,#5 (`8V@*P'-E=.XR!@`&PP*#,@/&!Q,"@[HS$PU]"H (SPG9.Q7_
M>#(U-0* "H$-L0M@;O!G,3 S%" +"A0B`= D($@$D&4G!"!A( 4%H'4+4&4@
M;V8@I0"0;1MB=&@+@&<$(,!)(&1I9" #&#92;!Q 9QO `W ;@$%L&W )P&_^( J%
M$< =P!O "? =8!'@@"X@5&AE>2 `P+9K&X =(" 6``= ("!@'G,?L!Q !Y ;
M@&1A>=&#92;?5!XF`B 'D1RP=1'P'/ M`B!L'[ 1P'8;@#,@`G +@',Z("LU5L0L
M(!WQ=6YD)' `</$C`75T<"5@'V *A1RQQ0(@)P5 :VYO!^ !H),E41_!>" #
M4&5Q"E"H;F-Y)'!B)T%Y"&!_&R #D0(0'< FX0J%(/$@:FP+@&L$('0>$"#Q
M:?,%P "0=&4?8QK#*D$@8/<%P"42`^%T$; <82'G)6/9'#!Y< >0'V!!)2(B
M<.&#92;@$!KR+,0<,6$N(0AP!C'_`B =`!^0`Z *A2 A$? 'D?<J&#92;"#Q!<!P!O ;
M@RH"`,"V9R)P):%&"=$;P&$;&#92;ELP@BP2+@J%"H5-,U-I_F,&41&#92;2&P`:&#92;@A0
M`C #8*T#(%8&&#92; &09QN 4PAAO&-E"H<9VA5@`$%U%> 6;"I@'/!H`D!P.B_T
M+W<[("X1&#92; !P,X$%H$AM+WXE<&%D)F!CA&LO,T$R8W8N.K"N;17@&<PU#%<<
M4'(C0$8M/S,R44Q&3QXF4_&#92;CX0,`+3$+42M0*I$?L"42_S-$-D$>]#;4"H4'
M@!&Q`P`[*. #($PFX3/!)^0@3_&#92;$&#92; ,007$%L"6W.0&#92;Z'SLOY3PV<R/A7VP"
M$#T?/B&#92;<("U-$$TA30!4;V)]'[!0/$0U#$U 3T8*A6),8G(`<!' ;4 #X&)Z
M91W +C-Q'0`#8"M0.O$*A3Y$;P>1`' HH"&#92;!_R;#,- P$BY1&Y(;$AOP(F'?
M`C <H2CB(M$>)CX"$"QB&#92;R 0)-!U8P&0*! S&#92;3:$?"AK5J$BQ N *C$?&#92;6%W
M)6 #<%&P:2.14?8V,&W++2(J0&=(<',I30`<L/IW"&!L'/!8HRJA. `B<&]0
M<$&1&Q 5D&<V026 ;.<A(2Y@-5<^=C?%7316,O=5<EAQ&Q!"(+!"H@&0&_#[
M'W `T&@=<2M0!<!6,E'V^U5R,*%S`, >P0GP7/ B<?&#92;?8#&#92;@1<$>X2+ 8* J
MH0&@SQU@43 G8QD@+#!E8%6G^')P;1K@8W$NL!^P!N!^9"-54L$@$ VP(+!C
M<4__,C(#&#92;2$Q4H)1]E+%9S0D@%9O!' @D'@*L&XP$&G_,*$;H6#P)O$>E W!
M!9 %0/=1]D+56T!R*G$E$@:0(!#_&R);<5]S+B$>$![Q'/ ;$']=-"<R:3<J
M@3,7,L88T'G_,-%1$!O (^(CT""P+B$AP>,>]#3V/E1(`'!N`AW %S4,"H45
M(0!W0 ````,`$! ``````P`1$ ````! ``<P(%:3T[H)P0% ``@PX*L,><<)
@P0$>`#T``0````4```!213H@``````,`#33]-P``;&#92;D)
`
end

bbranham@... wrote:

Does anyone know what type of a component I can use for an inductance
sensor (kind used in like automotive timing lights)??? I would like to
generate a logic pulse per voltage pulse for use in a Basic stamp
Tachometer for use on small engines.??? Will se up to absol. max 10,000
rpm's.??? Any body have any ideas.??? Otherwise does anyone have a good
expanation of how a hall effect sensor works and if i could use it to
send a pulse out as the magnet of the flywheel spins past the sensor.

THanks all

To unsubscribe from this group, send an email to:
Electronics_101-unsubscribe@...
???
???

Your use of Yahoo! Groups is subject to

I think you'll find a Hall effect sensor much easier to use in the long run,
But I've never used one, so I can't give you detail on how to use them. I'm
sure any number of book at the local library should be able to hewlp you with
that more reliably than I can.......?????????????????? Good luck.......
???

--
)O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(

???????????? The Sinister Dragon
???
???

Does anyone know what type of a component I can use for an inductance
sensor (kind used in like automotive timing lights) I would like to
generate a logic pulse per voltage pulse for use in a Basic stamp
Tachometer for use on small engines. Will se up to absol. max 10,000
rpm's. Any body have any ideas. Otherwise does anyone have a good
expanation of how a hall effect sensor works and if i could use it to
send a pulse out as the magnet of the flywheel spins past the sensor.


THanks all

Yep.
1uF (10n-6) = 1000nF (10n-9) = 1,000,000pf (10n-12)
Larry H

--- sjohns10@... wrote:

I just want to know if .001uF is the same thing as 1 nF.
Thanks

__________________________________________________
Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail

I just want to know if .001uF is the same thing as 1 nF. Thanks

Normally this is not possible for both jacks. One of the normal
functions of the 1/4' jacks in guitar pedals is to make up the ground
side of the battery connection effectively turning the pedal "ON"
That is why you should always unplug your cables when not in use to
save your battery. Since the RCA jack does not have a switch (not
any I have seen), the 1/4" phone cannot be directly replaced.

1/4" phone male to 1/4 RCA female adapters are plentiful and cheap.
Larry Hendry



--- go_robot_go@... wrote:

hello. i'm new to the group and to electronics...

is it possible to change the 1/4" jacks of a distortion pedal to
rca
jacks? thanks....jason

__________________________________________________
Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail

hello. i'm new to the group and to electronics...

is it possible to change the 1/4" jacks of a distortion pedal to rca
jacks? thanks....jason

Yes, but it would be easier to use an adapter to convert 1/4" to an RCA
phono jack. The mechanical connection with an RCA plug/jack is much less
reliable than the 1/4" and will pull out a lot easier, which could be very
inconvenient when you are playing, not to mention the additional noise that
will be introduced. The poor connection (compared to the 1/4") will raise
hell with ground loop problems too. Gold plated connectors are a must to
minimize these potential problems - even with an adapter. Good luck with
whatever you decide.

Bob

I just saw a kit to make a little shock device, try this link >



Have Fun!

Mark

hello. i'm new to the group and to electronics...

is it possible to change the 1/4" jacks of a distortion pedal to rca
jacks? thanks....jason

I think most of these things are very simple. I recently had a
cigarette lighter just like that that ran on one AAA battery.
Usually, they only contain a coil. They work just like the coils in
autombiles. You energize the coil with the battery. When you open
the circuit and the coil is de-energized, the lines of flux collapse
and produce a very high voltage for a very short duration. This is
the way high voltages for spark plugs are derrived from 12 volt
batteries. My older brother gave me this lesson once (40 years
ago)with a model "A" coil he had wired to a chair in his room with a
battery and tap switch.
Larry Hendry

--- sjohns10@... wrote:

Hello,
I saw this really cool shocking pen at the store yesterday,(you
push down the top and it gives you a good jolt) but it was $30.
Does
anyone here have or know where I could get a schematic to make
something like that? Thanks.


To unsubscribe from this group, send an email to:
Electronics_101-unsubscribe@...



Your use of Yahoo! Groups is subject to

__________________________________________________
Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail

Hello,
I saw this really cool shocking pen at the store yesterday,(you
push down the top and it gives you a good jolt) but it was $30. Does
anyone here have or know where I could get a schematic to make
something like that? Thanks.

开云体育

Does anyody know of circuit diagrams/scematics for popular electric fence units, also I am looking for specs on popular electric fence wire, say the resistivity and other specs, Cheers - Mike

A West-coast buyer and associates he is working with
have developed some modifications and addendums to the
original documentation for these VFD displays, which
are an advanced version compared to the original
versions.

The new docs help you with hookup, power-up reset, and
serial mode operation, featuring several photos. Hope
this helps.

-original message-

I have a large quantity of used Futaba M202SD08
standard character display modules (vacuum flourescent
displays or VFDs) for sale for $15.00 each, with free
shipping. (Free shipping in the US only - foreign
buyers need to conact me for shipping rates)

On my VFD page at
you'll
find photos, specifications, a link to the operations
manual in PDF format so you can download the manual
free, a link to Futaba for further information, my
eBay buyer / seller ratings, and more.

These VFDs can be used in a variety of applications
such as BASIC STAMPS, 80C52-BASIC controllers, PCs,
robotics, PICs, PLCs, miscellaneous projects for the
electronics hobbyist and experimenter, and more.

These displays were removed from good equipment
because they weren't "showroom new". A few of the
pixels are slightly dim, but each has been
individually tested and found to be in good working
order.

Each module comes with a 30-day guarantee (minus
return shipping charges) if returned in undamaged
condition with your sales receipt.

They may not be suitable for production use, but they
are a terrific bargain for experimenters, developers,
prototyping and hobbyists.

These VFDs retail new for $70-90 each, but I am
offering good used ones for about 1/4th that price.
Only $15.00 each, shipping included.

I accept personal checks and money orders, or you can
use your credit card securely via PayPal to order with
the "Buy-It-Now" button on my page.

If you have any questions, please feel free to contact
me.

William E. (Ed) Miller, ASEET
11 N. Washington Street
Chesterfield, Indiana 46017 USA
(765) 378-0358 (evenings)
prototech@... (main e-mail)
coolcreek.geo@... (alternative e-mail)



=====
William E. (Ed) Miller
coolcreek.geo@...
prototech@...

__________________________________________________
Do You Yahoo!?
Spot the hottest trends in music, movies, and more.

Hello,
I'm new here and hope to learn
a little bit about analog electronics
Guenter
______________________________________________________________________________
Ferienklick.de - Jede Menge Urlaub auf einen Blick!
Hier geht's zu Ihrem Traumstrand:

开云体育

?

Is there anybody that can help me to design a pic based interface for a brainwave monitor? I need at least a four channel display. It can be for pc or gameboy.

I think a dual channel oscilloscope presented in EPE magazine, based in 16F877 can help, but I would like to know how to add more channels. In Elektor was presented a gameboy based oscilloscope, but I have not read it.

?

The analog part is easier for me.

Victor