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thank you Helmut for your patience and answers. Now, it's more clear in my mind. Besides, some answers didn't satisfy me : R4 and especially D4 and R12. How does my amp can work since it is in this

Macy wrote: .model PN4250 PNP(Is=6.734f Xti=3 Eg=1.11 Vaf=45.7 Bf=388.2 Ne=1.806 > ... Parentheses were never needed there. Unless I am mistaken, they are treated like whitespace. This goes back to

In message <kshfhj+al36@...>, dated Sun, 21 Jul 2013, Helmut <helmutsennewald@...> writes: That will compensate them for losing the first two cricket Test Matches, but not 100%. (;-) --

Hello, I want only remind that Mike is on tour in Australia this week. http://www.linear.com/company/events.php?tt=LTspice&ci=&sp=&fd=&td=

Hello Jean, My answers are below. R4 has to be ideally connected to the output as I did. Then the offset of the amplifier output will be only the offset of U1B. If we connect R4to the net "C5", the

http://www.emcs.org/acstrial/newsletters/spring10/ABriefSPICE.pdf Simulation Program with Integrated Circuit Emphasis

OK. I agree, on your schematic, the amp works fine. Problem is : why did you changed, added components and changed some wires : - output on R4 in place of C5 - D5 instead of Q5 - D4 added - Q11 PNP

OK, thank you

Hello Jean, I have uploaded a new version which tries to use most of your original values while still has all the necessary corrections. Please continue with this version in your project. Files > Temp

In message <ksg876+8t42@...>, dated Sun, 21 Jul 2013, jean_claudeabeille <jean_claudeabeille@...> writes: I suggest you follow Helmut's advice, because your question is about amplifier

OK, Helmut, if "we don't want discuss the design of audio amplifiers", I give up !

Hello John You are right, there are some errors in the schematic. I uploaded the new corrected one along with the missing components files : AmpJCA.zip. I hope that this time the schematic is correct.

Hello all In dire need of UC1834 TI voltage regulator IC model..please do reply if anyone has one Thanks.

Hello Macy, LTspice accepts .model with and without brackets. .model 2N22222 NPN (Is=1e-16 BF=100) .model 2N22222 NPN Is=1e-16 BF=100 I recommend to use brackets, because it's more common and it will

found this old thing ...similar, somebody may want it. .model PN4250 PNP(Is=6.734f Xti=3 Eg=1.11 Vaf=45.7 Bf=388.2 Ne=1.806 + Ise=6.734f Ikf=.205 Xtb=1.5 Br=2.635 Nc=2 Isc=0 Ikr=0 Rc=1.67 + Cjc=6.2p

Thank you for your answer, it's very kind

The grandfather of all spice programs was a phd thesis in one of the California universities. it was even called spice which indicated a ( S? Program for Integrated Circuit Engineering.) it's primary

Hello Jean, The circuit had a lot of mistakes. I tried to correct them. Please watch all the circles and my other comments in the schematic. My files: Files > Temp > AmpJCA_1.zip I have used most of

In message <kseg1d+mptm@...>, dated Sat, 20 Jul 2013, legg@... writes: It's normally completely impossible to know when anything really started. I know that an ex-colleague was doing

The old W98 installation on this machine has files in the SWCAD directory, probably copied from an installation CD, that have 'modified' time stamps of Oct'99. This is likely when the CD contents