Maker Pro
Login Join Maker Pro
Or sign in with

Menu

Connect With Us

Network

Maker Pro

Spice 3f5

S

sycochkn

Jan 1, 1970
0
Is there a binary for Spice 3f5 somewhere, that I can download, that is
compiled for windows.

Bob
 
N

Ned Forrester

Jan 1, 1970
0
sycochkn said:
Is there a binary for Spice 3f5 somewhere, that I can download, that is
compiled for windows.
Click to expand...

I don't know about a 3f5 binary for Windows, but as a former user of the
3f5 source distribution from Berkeley, I will say that since starting to
use LTSpice free from Linear Technology, I have no plans to return to
native 3f5. LTSpice is based on 3f5, and contains the all important (to
me) arbitrary source, but has improved convergence, better front and
back ends (schematic capture and plotting), and provides behavioral
models of logic devices.

I'm not sure why you would want native 3f5.

--
NOTE: to reply, remove all punctuation from email name field

Ned Forrester [email protected] 508-289-2226
Applied Ocean Physics and Engineering Dept.
Oceanographic Systems Lab http://adcp.whoi.edu/
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
 
S

sycochkn

Jan 1, 1970
0
Ned Forrester said:
I don't know about a 3f5 binary for Windows, but as a former user of the
3f5 source distribution from Berkeley, I will say that since starting to
use LTSpice free from Linear Technology, I have no plans to return to
native 3f5. LTSpice is based on 3f5, and contains the all important (to
me) arbitrary source, but has improved convergence, better front and back
ends (schematic capture and plotting), and provides behavioral models of
logic devices.

I'm not sure why you would want native 3f5.

--
NOTE: to reply, remove all punctuation from email name field

Ned Forrester [email protected] 508-289-2226
Applied Ocean Physics and Engineering Dept.
Oceanographic Systems Lab http://adcp.whoi.edu/
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
Click to expand...

I dont need the user interface. I use AutoCAD for the graphics interface. I
use notepad for input.

Bob
 
H

Helmut Sennewald

Jan 1, 1970
0
sycochkn said:
I dont need the user interface. I use AutoCAD for the graphics interface.
I use notepad for input.

Bob
Click to expand...


Hallo Bob,

Even if you work with netlists, you will be happy with
the waveform viewer of LTspice. It's much more powerful
than what you can get for SPICE 3Fx. Also LTspice is more
compatible to (P)SPICE than SPICE 3Fx.

If you don't like productive and state of the art software,
you should go with SPICE 3Fx of course.

Best regards,
Helmut
 
S

sycochkn

Jan 1, 1970
0
Helmut Sennewald said:
Hallo Bob,

Even if you work with netlists, you will be happy with
the waveform viewer of LTspice. It's much more powerful
than what you can get for SPICE 3Fx. Also LTspice is more
compatible to (P)SPICE than SPICE 3Fx.

If you don't like productive and state of the art software,
you should go with SPICE 3Fx of course.

Best regards,
Helmut
Click to expand...

I like productive state of the art software as well as anybody else. I am a
little tapped out at the moment I just spent 1200 dollars on software. I
only use spice occasionally so I would not really want to spend any money on
it I can live without the user interface.

Bob
 
H

Helmut Sennewald

Jan 1, 1970
0
sycochkn said:
I like productive state of the art software as well as anybody else. I am
a little tapped out at the moment I just spent 1200 dollars on software. I
only use spice occasionally so I would not really want to spend any money
on it I can live without the user interface.

Bob
Click to expand...


Hello Bob,

LTspice is for free. You don't need any money to get it.
Maybe hundred thousand have it already.

Just download it from here. It's only 7MB.
http://ltspice.linear.com/software/swcadiii.exe

If you need help or jut want to look what other
people simulate, join the LTspice group.
http://tech.groups.yahoo.com/group/LTspice/

Best regards,
Helmut
 
H

Helmut Sennewald

Jan 1, 1970
0
sycochkn said:
What does iteration limit execeded mean?

Bob
Click to expand...



Hello Bob,
This means LTspice has stopped because it couldn't find the solution.
There may be many reason for that.
Do you have a GND in your circuit? It's required in (LT)SPICE.
If the naswer is yes, firstly try the Alternate-solver.
Control Panel->SPICE->Solver Alternate.

If it still fails, you can either put the .asc-file in your reply or send it
to me for checking.

Best regards,
Helmut
 
S

sycochkn

Jan 1, 1970
0
Helmut Sennewald said:
Hello Bob,
This means LTspice has stopped because it couldn't find the solution.
There may be many reason for that.
Do you have a GND in your circuit? It's required in (LT)SPICE.
If the naswer is yes, firstly try the Alternate-solver.
Control Panel->SPICE->Solver Alternate.

If it still fails, you can either put the .asc-file in your reply or send
it
to me for checking.

Best regards,
Helmut
Click to expand...

transient analysis works ok. there is no model for the particular op amp
used National LM12 I just used generic parts for the moment.

Version 4
SHEET 1 1680 1088
WIRE 864 -304 384 -304
WIRE 1568 -304 864 -304
WIRE 384 -288 384 -304
WIRE 384 -224 384 -240
WIRE 864 -176 864 -224
WIRE 864 -176 448 -176
WIRE 1008 -176 864 -176
WIRE 1136 -176 1008 -176
WIRE 1264 -176 1136 -176
WIRE 864 -160 864 -176
WIRE 1008 -160 1008 -176
WIRE 1136 -160 1136 -176
WIRE 1264 -160 1264 -176
WIRE 864 -64 864 -80
WIRE 1008 -64 1008 -80
WIRE 1136 -64 1136 -80
WIRE 1264 -64 1264 -80
WIRE 528 -48 528 -96
WIRE 448 -32 448 -176
WIRE 496 -32 448 -32
WIRE 800 -16 560 -16
WIRE 944 -16 800 -16
WIRE 1072 -16 944 -16
WIRE 1200 -16 1072 -16
WIRE 384 0 384 -224
WIRE 496 0 384 0
WIRE 528 64 528 16
WIRE 608 64 608 -96
WIRE 608 96 608 64
WIRE 544 192 464 192
WIRE 864 192 864 32
WIRE 864 192 624 192
WIRE 1008 192 1008 32
WIRE 1008 192 864 192
WIRE 1136 192 1136 32
WIRE 1136 192 1008 192
WIRE 1264 192 1264 32
WIRE 1264 192 1136 192
WIRE 1456 192 1264 192
WIRE 864 384 864 192
WIRE 1008 384 1008 192
WIRE 1136 384 1136 192
WIRE 1264 384 1264 192
WIRE 528 400 528 352
WIRE -144 416 -320 416
WIRE 64 416 -80 416
WIRE 496 416 64 416
WIRE 624 432 560 432
WIRE 736 432 704 432
WIRE 800 432 736 432
WIRE 944 432 800 432
WIRE 1072 432 944 432
WIRE 1200 432 1072 432
WIRE 464 448 464 192
WIRE 496 448 464 448
WIRE 464 512 464 448
WIRE 528 512 528 464
WIRE 608 512 608 352
WIRE 608 544 608 512
WIRE 736 608 736 496
WIRE 736 784 736 672
WIRE 864 944 864 480
WIRE 1008 944 1008 480
WIRE 1136 944 1136 480
WIRE 1264 944 1264 480
WIRE 736 1024 736 848
WIRE 864 1024 736 1024
WIRE 1008 1024 864 1024
WIRE 1136 1024 1008 1024
WIRE 1264 1024 1136 1024
WIRE 1568 1024 1264 1024
WIRE 1648 1024 1648 -304
WIRE 1648 1056 1648 1024
FLAG 464 592 0
FLAG 64 496 0
FLAG -320 496 0
FLAG 384 80 0
FLAG 1648 1056 0
FLAG 608 96 0
FLAG 608 544 0
FLAG 1456 272 0
SYMBOL res 848 -320 R0
SYMATTR InstName R4
SYMATTR Value .1
SYMBOL pnp2 800 32 M180
SYMATTR InstName Q2
SYMBOL Opamps\\UniversalOpamp 528 432 R0
WINDOW 0 -43 -59 Left 0
SYMATTR InstName U1
SYMATTR SpiceLine ilimit=1 rail=0 Vos=0 phimargin=45
SYMBOL Opamps\\UniversalOpamp 528 -16 R0
WINDOW 0 -47 -59 Left 0
SYMATTR InstName U2
SYMATTR SpiceLine ilimit=1 rail=0 Vos=0 phimargin=45
SYMBOL res 640 208 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 448 608 M180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R3
SYMATTR Value 500
SYMBOL res 48 400 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL voltage -320 400 R0
WINDOW 3 24 160 Left 0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value SINE(0 1 1000 0 0 0 200)
SYMATTR Value2 AC 1 0
SYMATTR InstName V3
SYMBOL res 848 928 R0
SYMATTR InstName R6
SYMATTR Value .1
SYMBOL diode 368 -288 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL res 368 -16 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL voltage 1552 -304 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 30
SYMBOL voltage 512 -96 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 35
SYMBOL voltage 512 352 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 35
SYMBOL voltage 624 64 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 4 56 VTop 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 35
SYMBOL voltage 624 512 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V6
SYMATTR Value 35
SYMBOL voltage 1664 1024 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V7
SYMATTR Value 30
SYMBOL cap -144 432 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL res 720 448 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R7
SYMATTR Value 10
SYMBOL diode 720 432 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode 720 608 R0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode 720 784 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL res 848 -176 R0
SYMATTR InstName R9
SYMATTR Value .1
SYMBOL res 1440 176 R0
SYMATTR InstName R10
SYMATTR Value 8
SYMBOL res 992 928 R0
SYMATTR InstName R11
SYMATTR Value .1
SYMBOL res 992 -176 R0
SYMATTR InstName R12
SYMATTR Value .1
SYMBOL npn2 944 384 R0
SYMATTR InstName Q1
SYMBOL pnp2 944 32 M180
SYMATTR InstName Q3
SYMBOL res 1120 928 R0
SYMATTR InstName R1
SYMATTR Value .1
SYMBOL res 1120 -176 R0
SYMATTR InstName R13
SYMATTR Value .1
SYMBOL npn2 1072 384 R0
SYMATTR InstName Q5
SYMBOL pnp2 1072 32 M180
SYMATTR InstName Q6
SYMBOL res 1248 928 R0
SYMATTR InstName R14
SYMATTR Value .1
SYMBOL res 1248 -176 R0
SYMATTR InstName R15
SYMATTR Value .1
SYMBOL npn2 1200 384 R0
SYMATTR InstName Q7
SYMBOL pnp2 1200 32 M180
SYMATTR InstName Q8
SYMBOL npn2 800 384 R0
SYMATTR InstName Q4
TEXT -272 -104 Left 0 !.ac oct 10 20 20000
 
H

Helmut Sennewald

Jan 1, 1970
0
sycochkn said:
transient analysis works ok. there is no model for the particular op amp
used National LM12 I just used generic parts for the moment.
Click to expand...

Hello Bob,

I could solve the problem with a less ideal transistor model.
Just change the transistor models from NPN to NPN1 and PNP to PNP1.
Then add the two SPICE-lines to your schematic.

..model NPN1 NPN(VAF=100)
..model PNP1 PNP(VAF=100)

A new version is attached.

Best regards,
Helmu


Version 4
SHEET 1 1680 1088
WIRE 864 -304 384 -304
WIRE 1568 -304 864 -304
WIRE 384 -288 384 -304
WIRE 384 -224 384 -240
WIRE 864 -176 864 -224
WIRE 864 -176 448 -176
WIRE 1008 -176 864 -176
WIRE 1136 -176 1008 -176
WIRE 1264 -176 1136 -176
WIRE 864 -160 864 -176
WIRE 1008 -160 1008 -176
WIRE 1136 -160 1136 -176
WIRE 1264 -160 1264 -176
WIRE 864 -64 864 -80
WIRE 1008 -64 1008 -80
WIRE 1136 -64 1136 -80
WIRE 1264 -64 1264 -80
WIRE 528 -48 528 -96
WIRE 448 -32 448 -176
WIRE 496 -32 448 -32
WIRE 800 -16 560 -16
WIRE 944 -16 800 -16
WIRE 1072 -16 944 -16
WIRE 1200 -16 1072 -16
WIRE 384 0 384 -224
WIRE 496 0 384 0
WIRE 528 64 528 16
WIRE 608 64 608 -96
WIRE 608 96 608 64
WIRE 544 192 464 192
WIRE 864 192 864 32
WIRE 864 192 624 192
WIRE 1008 192 1008 32
WIRE 1008 192 864 192
WIRE 1136 192 1136 32
WIRE 1136 192 1008 192
WIRE 1264 192 1264 32
WIRE 1264 192 1136 192
WIRE 1456 192 1264 192
WIRE 864 384 864 192
WIRE 1008 384 1008 192
WIRE 1136 384 1136 192
WIRE 1264 384 1264 192
WIRE 528 400 528 352
WIRE -144 416 -320 416
WIRE 64 416 -80 416
WIRE 496 416 64 416
WIRE 624 432 560 432
WIRE 736 432 704 432
WIRE 800 432 736 432
WIRE 944 432 800 432
WIRE 1072 432 944 432
WIRE 1200 432 1072 432
WIRE 464 448 464 192
WIRE 496 448 464 448
WIRE 464 512 464 448
WIRE 528 512 528 464
WIRE 608 512 608 352
WIRE 608 544 608 512
WIRE 736 608 736 496
WIRE 736 784 736 672
WIRE 864 944 864 480
WIRE 1008 944 1008 480
WIRE 1136 944 1136 480
WIRE 1264 944 1264 480
WIRE 736 1024 736 848
WIRE 864 1024 736 1024
WIRE 1008 1024 864 1024
WIRE 1136 1024 1008 1024
WIRE 1264 1024 1136 1024
WIRE 1568 1024 1264 1024
WIRE 1648 1024 1648 -304
WIRE 1648 1056 1648 1024
FLAG 464 592 0
FLAG 64 496 0
FLAG -320 496 0
FLAG 384 80 0
FLAG 1648 1056 0
FLAG 608 96 0
FLAG 608 544 0
FLAG 1456 272 0
SYMBOL res 848 -320 R0
SYMATTR InstName R4
SYMATTR Value .1
SYMBOL pnp2 800 32 M180
SYMATTR InstName Q2
SYMATTR Value PNP1
SYMBOL res 640 208 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 448 608 M180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R3
SYMATTR Value 500
SYMBOL res 48 400 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL voltage -320 400 R0
WINDOW 3 24 160 Left 0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value SINE(0 1 1000 0 0 0 200)
SYMATTR Value2 AC 1 0
SYMATTR InstName V3
SYMBOL res 848 928 R0
SYMATTR InstName R6
SYMATTR Value .1
SYMBOL diode 368 -288 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL res 368 -16 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL voltage 1552 -304 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 30
SYMBOL voltage 512 -96 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 35
SYMBOL voltage 512 352 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 35
SYMBOL voltage 624 64 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 4 56 VTop 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 35
SYMBOL voltage 624 512 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V6
SYMATTR Value 35
SYMBOL voltage 1664 1024 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V7
SYMATTR Value 30
SYMBOL cap -144 432 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL res 720 448 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R7
SYMATTR Value 10
SYMBOL diode 720 432 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode 720 608 R0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode 720 784 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL res 848 -176 R0
SYMATTR InstName R9
SYMATTR Value .1
SYMBOL res 1440 176 R0
SYMATTR InstName R10
SYMATTR Value 8
SYMBOL res 992 928 R0
SYMATTR InstName R11
SYMATTR Value .1
SYMBOL res 992 -176 R0
SYMATTR InstName R12
SYMATTR Value .1
SYMBOL npn2 944 384 R0
SYMATTR InstName Q1
SYMATTR Value NPN1
SYMBOL pnp2 944 32 M180
SYMATTR InstName Q3
SYMATTR Value PNP1
SYMBOL res 1120 928 R0
SYMATTR InstName R1
SYMATTR Value .1
SYMBOL res 1120 -176 R0
SYMATTR InstName R13
SYMATTR Value .1
SYMBOL npn2 1072 384 R0
SYMATTR InstName Q5
SYMATTR Value NPN1
SYMBOL pnp2 1072 32 M180
SYMATTR InstName Q6
SYMBOL res 1248 928 R0
SYMATTR InstName R14
SYMATTR Value .1
SYMBOL res 1248 -176 R0
SYMATTR InstName R15
SYMATTR Value .1
SYMBOL npn2 1200 384 R0
SYMATTR InstName Q7
SYMATTR Value NPN1
SYMBOL pnp2 1200 32 M180
SYMATTR InstName Q8
SYMATTR Value PNP1
SYMBOL npn2 800 384 R0
SYMATTR InstName Q4
SYMATTR Value NPN1
SYMBOL Opamps\\universalopamp 528 -16 R0
SYMATTR InstName U1
SYMBOL Opamps\\universalopamp 528 432 R0
SYMATTR InstName U2
TEXT -272 -104 Left 0 !.ac oct 10 20 20000
TEXT -264 32 Left 0 !.model NPN1 NPN(VAF=100)
TEXT -264 80 Left 0 !.model PNP1 PNP(VAF=100)
 
S

sycochkn

Jan 1, 1970
0
Helmut Sennewald said:
Hello Bob,

I could solve the problem with a less ideal transistor model.
Just change the transistor models from NPN to NPN1 and PNP to PNP1.
Then add the two SPICE-lines to your schematic.

.model NPN1 NPN(VAF=100)
.model PNP1 PNP(VAF=100)

A new version is attached.

Best regards,
Helmu
Click to expand...
Same malfunction Iteration limit reached. I guess I will make a .cir file
and see what pspice does to it.


Bob
 
H

Helmut Sennewald

Jan 1, 1970
0
Same malfunction Iteration limit reached. I guess I will make a .cir file
and see what pspice does to it.


Bob
Click to expand...


Hello Bob,

You have to reset LTspice to the Normal-solver.

Control Panel -> SPICE -> Reset to Default Values

Best regards,
Helmut
 
G

Gerhard Hoffmann

Jan 1, 1970
0
I dont need the user interface. I use AutoCAD for the graphics interface. I
use notepad for input.
Click to expand...

Sometimes, life is cruel.

If you really want to punish yourself by forgoing LTspice, you might try
XSpice from Georgia Tech. That's about as 3f5-ish as it gets.

(When you hit an iteration limit, you usually have done something wrong.)

regards, Gerhard
 
G

Gerhard Hoffmann

Jan 1, 1970
0
(When you hit an iteration limit, you usually have done something wrong.)
Click to expand...

Ooops, I took that reference to iteration limit
that you didn't want any further LTspice recommendations :)

Gerhard
 
S

sycochkn

Jan 1, 1970
0
Gerhard Hoffmann said:
Ooops, I took that reference to iteration limit
that you didn't want any further LTspice recommendations :)

Gerhard
Click to expand...

Transient analysis seems to work fine. That is the important one to me. I
now have enough information to prototype a little 5 watt class A audio
amplifier. It only has a quiescent power dissipation of 45 watts. and peak
of 90 watts.

Bob
 
G

Gerhard Hoffmann

Jan 1, 1970
0
Transient analysis seems to work fine. That is the important one to me. I
now have enough information to prototype a little 5 watt class A audio
amplifier. It only has a quiescent power dissipation of 45 watts. and peak
of 90 watts.
Click to expand...

Looks like it fills a badly needed void.

:) Gerhard
 
S

sycochkn

Jan 1, 1970
0
Gerhard Hoffmann said:
Looks like it fills a badly needed void.

:) Gerhard
Click to expand...
Class A audio power amplifiers are fairly rare. Recalculating the efficiency
I come up with about 25%.

Bob
 
S

sycochkn

Jan 1, 1970
0
Gerhard Hoffmann said:
5 Watts out for 90 Watts in is more like 5.6%.
That seems a little bit excessive. PushPull Class A can reach 50%
at max. output.
A good discussion is in Douglas Self: Audio Power Design Handbook 3rd ed.
isbn 0-7506-5636-0


That said, I cannot claim to be all too rational about this topic since I
own an old
Krell KST-100 that needs 20 TO-3s to get rid of the heat.


regards, Gerhard



This should be fuped to sci.electronics.design, but I can't get Agent to
do that.
Click to expand...
The quiescent current throught the output transistors is equal to the peak
load current. one transistor/transistor bank is a constant current source
equal to the peak load current. The other transistor/transistor bank is the
driven side with a current limit of twice the peak load current.

Assume 3 amps quiescent current , 12 volts peak out 4 ohm load and rail to
rail output. Quiescent power dissipation is 72 watts max output is 18 watts
rms efficiency of output stage is 25%, add the power for the losses and
driver less than 25% is the max efficiency.

Bob
 
S

sycochkn

Jan 1, 1970
0
sycochkn said:
The quiescent current throught the output transistors is equal to the peak
load current. one transistor/transistor bank is a constant current source
equal to the peak load current. The other transistor/transistor bank is
the driven side with a current limit of twice the peak load current.

Assume 3 amps quiescent current , 12 volts peak out 4 ohm load and rail
to rail output. Quiescent power dissipation is 72 watts max output is 18
watts rms efficiency of output stage is 25%, add the power for the losses
and driver less than 25% is the max efficiency.

Bob
Click to expand...

This is the LTspice model.


Version 4
SHEET 1 2556 776
WIRE 2144 -384 1472 -384
WIRE 608 -304 304 -304
WIRE 720 -304 608 -304
WIRE 1472 -304 1472 -384
WIRE 1472 -304 720 -304
WIRE 1856 -304 1744 -304
WIRE 2416 -304 2304 -304
WIRE 832 -256 480 -256
WIRE 1472 -256 896 -256
WIRE 976 -208 656 -208
WIRE 1072 -208 976 -208
WIRE 1168 -208 1072 -208
WIRE 1280 -208 1168 -208
WIRE 1376 -208 1280 -208
WIRE 1472 -208 1472 -256
WIRE 1472 -208 1456 -208
WIRE 1776 -208 1472 -208
WIRE 1872 -208 1776 -208
WIRE 2144 -208 2144 -384
WIRE 2432 -208 2144 -208
WIRE 976 -176 976 -208
WIRE 1072 -176 1072 -208
WIRE 1168 -176 1168 -208
WIRE 1280 -176 1280 -208
WIRE 976 -48 976 -96
WIRE 1072 -48 1072 -96
WIRE 1168 -48 1168 -96
WIRE 1280 -48 1280 -96
WIRE 1008 0 912 0
WIRE 1104 0 1008 0
WIRE 1216 0 1104 0
WIRE 1232 0 1216 0
WIRE 720 16 720 -304
WIRE 656 32 656 -208
WIRE 688 32 656 32
WIRE 848 48 752 48
WIRE 480 64 480 -256
WIRE 688 64 480 64
WIRE 480 80 480 64
WIRE 976 96 976 48
WIRE 976 96 912 96
WIRE 1744 128 1744 -304
WIRE 1744 128 1680 128
WIRE 1808 128 1744 128
WIRE 2304 128 2304 -304
WIRE 2304 128 2240 128
WIRE 2368 128 2304 128
WIRE 352 192 144 192
WIRE 912 192 432 192
WIRE 976 192 976 96
WIRE 976 192 912 192
WIRE 1072 192 1072 48
WIRE 1072 192 976 192
WIRE 1168 192 1168 48
WIRE 1168 192 1072 192
WIRE 1280 192 1280 48
WIRE 1280 192 1168 192
WIRE 1472 192 1280 192
WIRE 1680 192 1600 192
WIRE 1872 192 1872 -208
WIRE 1872 192 1808 192
WIRE 2160 192 2064 192
WIRE 2240 192 2160 192
WIRE 2432 192 2432 -208
WIRE 2432 192 2368 192
WIRE 912 224 912 192
WIRE 608 240 608 -304
WIRE 576 256 528 256
WIRE 1744 256 1680 256
WIRE 1808 256 1744 256
WIRE 2304 256 2240 256
WIRE 2368 256 2304 256
WIRE 848 272 640 272
WIRE 976 272 976 192
WIRE 1072 272 1072 192
WIRE 1168 272 1168 192
WIRE 1280 272 1280 192
WIRE 480 288 480 160
WIRE 576 288 480 288
WIRE 304 304 304 -304
WIRE 144 320 144 192
WIRE 272 320 144 320
WIRE 1008 320 912 320
WIRE 1104 320 1008 320
WIRE 1216 320 1104 320
WIRE 368 336 336 336
WIRE -128 352 -240 352
WIRE 0 352 -64 352
WIRE 272 352 0 352
WIRE 976 400 976 368
WIRE 1072 400 1072 368
WIRE 1168 400 1168 368
WIRE 1280 400 1280 368
WIRE 144 464 144 320
WIRE 368 496 368 336
WIRE 528 496 528 256
WIRE 528 496 448 496
WIRE 736 496 528 496
WIRE 976 496 976 480
WIRE 976 496 816 496
WIRE 1072 496 1072 480
WIRE 1072 496 976 496
WIRE 1168 496 1168 480
WIRE 1168 496 1072 496
WIRE 1280 496 1280 480
WIRE 1280 496 1168 496
WIRE 1360 496 1280 496
WIRE 1472 496 1440 496
WIRE 1600 496 1600 192
WIRE 1600 496 1472 496
WIRE 2160 496 2160 192
WIRE 480 560 480 288
WIRE 832 560 480 560
WIRE 1472 560 1472 496
WIRE 1472 560 896 560
WIRE 144 624 144 544
WIRE 304 640 304 368
WIRE 608 640 608 304
WIRE 608 640 304 640
WIRE 720 640 720 80
WIRE 720 640 608 640
WIRE 1472 640 720 640
WIRE 1744 640 1744 256
WIRE 1856 640 1744 640
WIRE 1936 640 1936 -304
WIRE 2304 640 2304 256
WIRE 2416 640 2304 640
WIRE 2496 640 2496 -304
WIRE 1936 688 1936 640
WIRE 2496 688 2496 640
WIRE 1472 768 1472 640
WIRE 2064 768 2064 192
WIRE 2064 768 1472 768
FLAG 144 624 0
FLAG 1936 688 0
FLAG -240 432 0
FLAG 0 432 0
FLAG 1472 272 0
FLAG 1776 -144 0
FLAG 1600 560 0
FLAG 2496 688 0
FLAG 2144 -144 0
FLAG 2160 560 0
SYMBOL pnp2 912 48 M180
SYMATTR InstName Q2
SYMBOL res 128 560 M180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL voltage 1840 -304 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0 15 60)
SYMBOL voltage 1952 640 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V7
SYMATTR Value SINE(0 15 60)
SYMBOL Opamps\\UniversalOpamp 720 48 R0
SYMATTR InstName U1
SYMATTR SpiceLine ilimit=100m rail=0 Vos=0 phimargin=45
SYMBOL res 464 64 R0
SYMATTR InstName R5
SYMATTR Value 2.7k
SYMBOL Opamps\\UniversalOpamp 304 336 R0
SYMATTR InstName U2
SYMATTR SpiceLine ilimit=100m rail=0 Vos=0 phimargin=45
SYMBOL Opamps\\UniversalOpamp 608 272 R0
SYMATTR InstName U3
SYMATTR SpiceLine ilimit=100m rail=0 Vos=0 phimargin=45
SYMBOL res -16 336 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL cap -128 368 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL res 1360 -192 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value .2
SYMBOL res 1344 512 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value .1
SYMBOL diode 832 544 M90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode 896 -272 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL res 336 208 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R4
SYMATTR Value 11k
SYMBOL res 720 512 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL res 352 512 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL voltage -240 336 R0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC 1 0
SYMATTR InstName V2
SYMATTR Value SINE(0 1 1000 0 0 0 1500)
SYMBOL pnp2 848 96 M180
SYMATTR InstName Q1
SYMBOL npn2 848 224 R0
SYMATTR InstName Q4
SYMBOL pnp2 1008 48 M180
SYMATTR InstName Q5
SYMBOL pnp2 1104 48 M180
SYMATTR InstName Q7
SYMBOL res 960 384 R0
SYMATTR InstName R10
SYMATTR Value .1
SYMBOL res 1056 384 R0
SYMATTR InstName R11
SYMATTR Value .1
SYMBOL res 1152 384 R0
SYMATTR InstName R13
SYMATTR Value .1
SYMBOL pnp2 1216 48 M180
SYMATTR InstName Q9
SYMBOL res 1264 384 R0
SYMATTR InstName R15
SYMATTR Value .1
SYMBOL res 960 -192 R0
SYMATTR InstName R16
SYMATTR Value .1
SYMBOL res 1056 -192 R0
SYMATTR InstName R17
SYMATTR Value .1
SYMBOL res 1152 -192 R0
SYMATTR InstName R19
SYMATTR Value .1
SYMBOL res 1264 -192 R0
SYMATTR InstName R21
SYMATTR Value .1
SYMBOL res 1456 176 R0
SYMATTR InstName R9
SYMATTR Value 4
SYMBOL npn 1216 272 R0
SYMATTR InstName Q3
SYMBOL npn 1104 272 R0
SYMATTR InstName Q6
SYMBOL npn 1008 272 R0
SYMATTR InstName Q8
SYMBOL npn 912 272 R0
SYMATTR InstName Q10
SYMBOL schottky 1792 128 R0
SYMATTR InstName D1
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 1664 192 R0
SYMATTR InstName D3
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 1696 192 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D5
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 1824 256 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D6
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 1760 -208 R0
SYMATTR InstName C2
SYMATTR Value 100000µf
SYMBOL cap 1584 496 R0
SYMATTR InstName C3
SYMATTR Value 100000µf
SYMBOL voltage 2400 -304 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value SINE(0 18.5 60)
SYMBOL voltage 2512 640 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value SINE(0 18.5 60)
SYMBOL schottky 2352 128 R0
SYMATTR InstName D7
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 2224 192 R0
SYMATTR InstName D8
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 2256 192 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D9
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 2384 256 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D10
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 2128 -208 R0
SYMATTR InstName C4
SYMATTR Value 10000µf
SYMBOL cap 2144 496 R0
SYMATTR InstName C5
SYMATTR Value 10000µf
TEXT -272 712 Left 0 !.tran 0 .52 .5
 
You must log in or register to reply here.

Similar threads

R
changing circuit element value using spice 3f5
Replies
2
Views
1K
Jim Thompson
J
M
PATCH: bug in spice-3f5 mutual inductors
Replies
5
Views
2K
John Woodgate
J
E
Op Amp Circuit Gain Does not Match LTSpice Simulation
2
Replies
26
Views
507
danadak
D
Maglatron
LTSpice files able to correspond to kiCad to make pcb for laser jet toner print on photo paper method
Replies
2
Views
393
Maglatron
Maglatron
S
Hello. I am finding the one LTspice model.
Replies
4
Views
400
Alec_t
Alec_t
Top