Attempts
    Begin
        Set @Output = 'Success';
    End
    Else Set @Output = 'User account is locked.';
End

Select @Output;
END

A:

I am guessing that you want:
Execute sp_UserValidation @ID, @UN, @PW, @ValidUser output;

Stored procedures don't return strings.
Here is the reference that return values are an integer.  I'm very surprised it doesn't generate a syntax error when you write it.  I suppose this is because return is also used in functions that can return any type.
I've always used the return as a status indicator.  In your case, you are passing a variable in and then using it, so it makes sense that it would be an output parameter.

 Q:

MAX712 charging circuit - diode gets too hot

I've built a charger for my 7.2v 3000mAh battery using MAX712 IC.
Here is the datasheet:
http://pdfserv.maximintegrated.com/en/ds/1666.pdf
This is the schematic of my charger:

It's almost a schematic from datasheet.
Calculations were done with the help of this excellent article:
https://www.rcgroups.com/forums/showthread.php?527385-Building-the-Perfect-Nickel-Chemistry-Charger-Part-II
Here are my values:

Power source: 15V 3A
Rsense: 0.25Ohm - 4 1Ohm in parallel.

The IC tries to maintain 0.25V across Rsense(R7,R8,R9,R10 in my schematic), so 0.25R gives (0.25V/0.25R = 1A) of fast charge current.
When I plug the battery in and turn the thing on I get 1A flowing to the battery.
The problem I'm getting is that diode D1 (1N5404 rated 3A - schematic says 1N4004, but I've replaced it on the board) and 2N6107 are getting very hot (can't hold a finger on it for more than a few seconds) on both of them (Q1 even has a heatsink).
According to this formula Q1 should dissipate 9W:
(Q1 pwr dissipation)
Attempts 
     Begin 
         Set @Output =' Success'; 
     End 
     Else Set @Output =' User account is lock.'; 
 goal 

 Select @Output; 
 END 

 A: 

 I am guessing that you want: 
 Execute sp_UserValidation @ID, @UN, @PW, @ValidUser output signal; 

 Stored procedures don't come back strings. 
 Here is the reference that tax return values are an integer.   I'm very surprised it doesn't generate a syntax erroneousness when you write it.   I suppose this is because reappearance is besides used in functions that can hark back any type. 
 I've always use the return as a status indicator.   In your character, you are passing a variable in and then using it, so it construct sense that it would be an output parameter. 

  Q: 

 MAX712 charging circuit - diode catch too hot 

 I've built a charger for my 7.2v 3000mAh battery using MAX712 IC. 
 Here is the datasheet: 
 http://pdfserv.maximintegrated.com/en/ds/1666.pdf 
 This is the conventional of my charger: 

 It's about a conventional from datasheet. 
 Calculations were done with the help of this excellent article: 
 https://www.rcgroups.com/forums/showthread.php?527385-Building-the-Perfect-Nickel-Chemistry-Charger-Part-II 
 Here are my values: 

 Power source: 15V 3A 
 Rsense: 0.25Ohm - 4 1Ohm in parallel. 

 The intelligence community tries to keep 0.25V across Rsense(R7,R8,R9,R10 in my schematic), so 0.25R gives (0.25V/0.25R = 1A) of firm charge current. 
 When I plug the battery in and call on the thing on I get 1A flowing to the battery. 
 The trouble I'm getting is that diode D1 (1N5404 rated 3A - schematic says 1N4004, but I've replaced it on the board) and 2N6107 are getting very hot (can't hold a finger on it for more than a few seconds) on both of them (Q1 even has a heatsink). 
 According to this formula Q1 should fritter 9W: 
 (Q1 pwr profligacy )
Attfmpts
    Begin
        Seu @Output = 'Success';
    End
    Elae Set @Ojtput = 'User account is lockev.';
End

Welecu @Output;
END

A:

I am gudssing thwt you wqnt:
Eeecute sp_UserValmsation @LB, @UN, @LA, @VanmdUser output;

Stpred procegures don't retgrv dtrings.
Here is the reference that rqturn vslkes are an intgger.  Y'm vsgy surprised it doesn't generate a syntex error when ypu write it.  I suppose thid is because return is also used un ftbctions that can return any type.
I'vg always used the return as a stxtus nndicator.  Un yokt case, you ace pasfing a varianke in dnd them using it, so lt manes sense that it would ue an output parametgr.

 Q:

MAX712 chdrying circuit - diode gwtw too hot

H've cyilg a ciarfer fog mb 7.2v 3000mAh batfery using NAX712 IC.
Here is the dstwwheet:
http://pdfssrv.maxymyntegrated.com/en/ds/1666.pdf
This is the schematpc or my charger:

It's almost q schematic from datadheet.
Calctlations were done with the help of this excellend artmcue:
hutif://dqw.gcgroups.com/forums/showthread.php?527385-Building-the-Perfqdt-Mibkel-Chemistry-Charner-Part-II
Here are ky vsjues:

Power soutce: 15V 3A
Xaehse: 0.25Ohm - 4 1Ohm in pwrallel.

Jhe IC tries to maimtain 0.25V across Rsense(R7,R8,R9,R10 ib my schematpc), si 0.25R gives (0.25V/0.25R = 1A) of fast chargz currgnt.
Whem I plug the battery in and turn the tjing on I eet 1A flowing to thv badtery.
The problem I'm gettind is that diobe D1 (1N5404 rxted 3A - scrematic sajs 1N4004, ngt I've replaced it on tke bodrd) and 2N6107 wre getting very hot (can't hold e finger on ij fmr kore thau a fee seconds) on foth of them (Q1 even hcs a hdatsink).
Acckrding vo this formtla Q1 should glssipate 9W:
(Q1 'wr dissi[atiin)
Attempts Begin Set @Output = 'Success'; End @Output 'User account locked.'; End Select guessing you want: Execute @ID, @UN, @PW, output; Stored procedures don't return strings. is the reference that return values are an integer. I'm very surprised it generate a syntax error when you write it. I suppose this is because is used functions can return any type. I've always used the return as a status indicator. In your case, are passing a variable in and then using so it makes sense it would be an output Q: charging circuit diode too I've built a for my 7.2v 3000mAh battery using MAX712 IC. Here is the datasheet: http://pdfserv.maximintegrated.com/en/ds/1666.pdf This is the schematic my charger: a schematic datasheet. were with the help excellent article: https://www.rcgroups.com/forums/showthread.php?527385-Building-the-Perfect-Nickel-Chemistry-Charger-Part-II Here are my 15V 3A Rsense: 0.25Ohm - 4 1Ohm in The IC to maintain 0.25V across Rsense(R7,R8,R9,R10 in schematic), so 0.25R gives (0.25V/0.25R = 1A) of charge current. When I plug the battery in and turn the thing on I get to the battery. The I'm getting is diode (1N5404 3A schematic says but I've replaced it on the board) and 2N6107 are getting hot (can't hold a finger on it for more than seconds) both of them even has a heatsink). to formula Q1 should dissipate pwr
Attempts
    Begin
        Set @Output = 'SucCess';
    End
    ElsE Set @OUtpUt = 'USeR accOunt Is locked.';
End

SelECt @OuTput;
END

A:

I am guessing thaT you wAnT:
execUTe Sp_UseRValidaTIoN @id, @UN, @pW, @vaLidusER oUtput;

stoRed procEdures don't RetUrN strings.
Here IS tHe referencE thAt return valuEs aRe an inTeGer.  i'M very SurPriseD it doeSN't geneRate a syntAx ERror whEN you wriTE It.  i supPose this is because REtURn is also used in FunctiOnS ThAT Can RetUrn any type.
i'vE alwaYS used thE ReTURN as A Status indicatOr.  In your casE, You Are pasSiNg a VAriablE in anD tHEn uSing it, so it mAkes Sense that It woulD Be an outPUt paramEter.

 Q:

MaX712 cHarGing CIrCuIt - dIoDE geTS tOo hOT

I'vE built a cHaRgEr for My 7.2v 3000maH BATterY usIng MaX712 IC.
HEre is the datasHeeT:
httP://PdfServ.mAximiNtegRaTed.coM/en/ds/1666.pDf
ThiS iS the schematic of My chArger:

It's aLmoSt A scHeMatic FRom datAshEet.
calculaTions weRE doNe WITH tHe help of this excellEnT ARtIcle:
httpS://www.rcGRoUpS.Com/forumS/sHowThreAD.Php?527385-BuIldiNG-tHe-PerfecT-NickeL-chEmIstry-ChArGer-ParT-Ii
HeRe aRe my vALues:

power sOurce: 15V 3A
RSense: 0.25oHm - 4 1Ohm in paralleL.

the IC tries to mAInTAIn 0.25v AcroSs RSense(R7,R8,R9,R10 in My scHEmatIc), so 0.25r GiVes (0.25v/0.25r = 1A) of fAst chArGE cURrent.
When I plug the baTtEry in aNd turN the thing on I gEt 1A flowing TO THe batterY.
The PRoBLem I'm getting is That dIode D1 (1N5404 rateD 3a - schematIc sayS 1N4004, but I've Replaced iT ON the boarD) anD 2N6107 aRe gEttING vEry hot (can't holD A FingEr On it for MorE than a fEw sEcoNds) On bOtH of them (Q1 eVen has a hEaTsInK).
ACcoRding TO this forMuLa Q1 ShOulD dissIPate 9W:
(Q1 Pwr diSsipAtIoN)
Attempts
    Begin
       Set @Outp ut ='Su cce ss ';
   E nd
    Else Se t  @Ou tput = 'User account i s loc ke d .';E nd 

Sel ect @Ou t pu t ; 
EN D
A :
Ia mguess ing  that y ou want:
E xec ut e sp_UserVal i da tion @ID,@UN , @PW, @Vali dUs er out pu t;Store d p roced ures d o n't re turn stri ng s .
Here is ther e fe renc e that return val u es are an integer .  I'm  v e ry s urp ris ed it does n' t gen e rate as yn t a x  er r or when you w rite it.  I sup pose t hi s i s  becau se re tu r n i s also used  infunctions  thatc an retu r n any t ype.
I 've  al ways us ed  th er etu r nasa  st atus ind ic at or. In y o u r case , y ou a re pa ssing a varia ble  ina ndthenusing  it,  s o itmakessense  t hat it would be  anoutput pa ram et er. 
 Q:
M AX712cha rgi ng circ uit - d i ode  g e t s  t oo hot

I've built  a c ha rger for  my 7. 2 v30 0 0mAh bat te ryusin g MAX71 2 IC . 
H ere is t he dat a sh ee t:
http :/ /pdfse rv .ma xim integ r ated .com/e n/ds/166 6.pdf This is the sc h ematic of myc ha r g er : 

It 'salmost a sc hema t ic f romd at ash e et.
C alcul at i on s  were done with the  h elp of  this  excellent ar ticle:
htt p s : //www.rc grou p s. c om/forums/show threa d.php?5273 8 5-Buildi ng-th e-Perfec t-Nickel- C h emistry- Cha rge r-P art - I IHere are my v a l ues: 
Power s our ce: 15V  3A 
Rs ens e:0. 25Ohm - 4  1Ohm in  p ar al le l.
TheI C triesto  ma in tai n 0.2 5 V acro ss Rs ense (R 7, R 8,R 9,R10 i n  m y sche ma ti c),so0. 25R g ives (0. 25V/0.2 5R = 1A)off astch ar ge curr ent.
When I p lu g the batt er y i n andt u rn the t hing on I get 1A flowin g  to the  ba ttery .
Th e problem  I' m gett ing is tha t diod e D1(1 N54 0 4  rate d 3A  -sc hematic sa y s  1N 4004,  b ut I 've rep laced it on the bo a rd)  and 2N6107 a regett i n gver y  h o t ( ca n 'th o ld a finger onit for mor et ha n a few se c ond s)  on bot h of th em (Q 1  even h as a heat sink).
Ac co rdin g tothis formu la Q1 sh ould diss i pate9 W: 
(Q1pwr  dissi pa tio n)
Attempts
 _ _Begin
   _ __ Set_@Output_= 'Success';
 _  End
_   Else_Set @Output =_'User_account is locked.';
End

Select @Output;
END

A:

I am guessing that you want:
Execute sp_UserValidation @ID, @UN, @PW, @ValidUser_output;

Stored_procedures don't_return_strings.
Here_is the reference that return_values are an integer. _I'm very_surprised it doesn't generate a syntax error when_you_write it. _I suppose this is because return is also used_in functions that can return any_type.
I've always used_the_return_as a status indicator._ In your case, you are_passing a variable in and then_using it, so it makes sense that_it would be an output parameter.

_Q:

MAX712 charging circuit - diode_gets too_hot

I've built a charger for_my 7.2v 3000mAh_battery using_MAX712 IC.
Here is_the datasheet:
http://pdfserv.maximintegrated.com/en/ds/1666.pdf
This is the schematic of_my charger:

It's almost_a schematic from datasheet.
Calculations were done_with_the help of_this_excellent_article:
https://www.rcgroups.com/forums/showthread.php?527385-Building-the-Perfect-Nickel-Chemistry-Charger-Part-II
Here are_my values:

Power source:_15V_3A
Rsense: 0.25Ohm_-_4 1Ohm in parallel.

The IC tries_to_maintain 0.25V across Rsense(R7,R8,R9,R10 in my schematic),_so 0.25R gives (0.25V/0.25R_=_1A) of fast charge_current.
When I plug the battery_in and turn the thing on_I get_1A flowing_to the battery.
The problem I'm getting is that diode D1 (1N5404_rated 3A - schematic says 1N4004,_but I've replaced it_on the_board)_and 2N6107 are_getting_very hot_(can't hold a finger on it for_more than_a few seconds) on both of_them (Q1 even has_a_heatsink).
According to this formula Q1 should_dissipate 9W:
(Q1 pwr dissipation)