Ultrasonic mixer

F

fred ander

Guest
Greetings to All: There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr. Does anyone have any ideas as to what
to use for an ultrasonic
mixer? Thank you 4 your time & attention.
 
On Oct 28, 4:15 am, fred ander <fredander...@gmail.com> wrote:
Greetings to All:  There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr.  Does anyone have any ideas as to what
to use for an ultrasonic
mixer?  Thank you 4 your time & attention.
Click to expand...
You can use a multiplier chip to mix things down to DC. Kinda spendy
though.

I use the AD734.

George H.
 
The mixer can be air. MIT gave an award for the invention of the year
around 2005 :
Two ultrasonic loudspeakers send 20khz and 25khz airwaves to a point
where they converge. People cannot hear either ultrasound, but the
non-linear aspects of air cause a mixing of the two inaudible signals
and people can sit at the point of convergence and hear the 5khz
sound!!! No electronic mixer is needed, just ultrasound and
air !!!!!!!!!

I independently invented this in 1987, but did not publish it. Imagine
how a halloween ghost voice could be used to haunt a paranoid rival !
Ha ha.
 
On Fri, 28 Oct 2011 01:15:09 -0700, fred ander wrote:

Greetings to All: There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr. Does anyone have any ideas as to what
to use for an ultrasonic
mixer? Thank you 4 your time & attention.
Click to expand...
Analog multiplier?

--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)
 
On Fri, 28 Oct 2011 01:15:09 -0700, fred ander wrote:

Greetings to All: There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr. Does anyone have any ideas as to what to
use for an ultrasonic
mixer? Thank you 4 your time & attention.
Click to expand...
Anything that multiplies.

* An analog multiplier.
* A handful of 4052 analog multipliers, some op-amps,
and some logic (http://www.wescottdesign.com/articles/MSK/page_76.html)
* A handful of better quality analog switches and some logic.
* An NE612.
* A diode-ring mixer, either fed with some Great Big Transformers,
or fed with balanced signals that are generated using op-amps.
* Two ADC channels (if the signals are already in the analog world)
and a DSP chip.

etc.

--
www.wescottdesign.com
 
"fred ander"

Greetings to All: There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr. Does anyone have any ideas as to what
to use for an ultrasonic
Click to expand...

** A simple JFET stage should do the trick.

Using say a 2N5457, just ground the source and feed to drain from a +5 volt
supply with a 1k to 2.2k resistor.

The non linearity will be high.




..... Phil
 
On Fri, 28 Oct 2011 01:15:09 -0700 (PDT), fred ander
<fredander503@gmail.com> wrote:

Greetings to All: There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr. Does anyone have any ideas as to what
to use for an ultrasonic
mixer? Thank you 4 your time & attention.
Click to expand...
---

Not quite your conventional double-balanced mixer, but just for fun:

Version 4
SHEET 1 1716 1092
WIRE 80 -256 -624 -256
WIRE 160 -256 80 -256
WIRE 528 -256 160 -256
WIRE 736 -256 528 -256
WIRE 1008 -256 736 -256
WIRE 80 -224 80 -256
WIRE 528 -208 528 -256
WIRE -624 -192 -624 -256
WIRE 1088 -192 944 -192
WIRE 1088 -176 1088 -192
WIRE 160 -144 160 -256
WIRE 80 -112 80 -144
WIRE 128 -112 80 -112
WIRE 272 -112 208 -112
WIRE 1008 -112 1008 -256
WIRE 944 -96 944 -192
WIRE 976 -96 944 -96
WIRE 128 -80 -256 -80
WIRE 1088 -80 1088 -96
WIRE 1088 -80 1040 -80
WIRE 1152 -80 1088 -80
WIRE 384 -64 336 -64
WIRE 528 -64 528 -128
WIRE 576 -64 528 -64
WIRE 672 -64 640 -64
WIRE 800 -64 672 -64
WIRE 832 -64 800 -64
WIRE 976 -64 912 -64
WIRE 272 -48 240 -48
WIRE 384 -32 384 -64
WIRE -480 -16 -512 -16
WIRE -448 -16 -480 -16
WIRE -352 -16 -368 -16
WIRE -272 -16 -288 -16
WIRE -256 -16 -256 -80
WIRE -256 -16 -272 -16
WIRE -240 -16 -256 -16
WIRE -160 -16 -176 -16
WIRE -48 -16 -80 -16
WIRE -16 -16 -48 -16
WIRE 144 -16 144 -48
WIRE 160 -16 160 -48
WIRE 160 -16 144 -16
WIRE 176 -16 176 -48
WIRE 176 -16 160 -16
WIRE 240 -16 240 -48
WIRE 944 -16 944 -96
WIRE 736 0 736 -256
WIRE 240 16 384 -32
WIRE 672 16 672 -64
WIRE 704 16 672 16
WIRE -624 32 -624 -112
WIRE -624 32 -672 32
WIRE 384 32 240 -16
WIRE 800 32 800 -64
WIRE 800 32 768 32
WIRE -272 48 -272 -16
WIRE 240 48 240 16
WIRE 272 48 240 48
WIRE 384 48 384 32
WIRE 416 48 384 48
WIRE 528 48 528 -64
WIRE 528 48 496 48
WIRE 560 48 528 48
WIRE 672 48 640 48
WIRE 704 48 672 48
WIRE -480 64 -480 -16
WIRE -48 64 -48 -16
WIRE 384 64 384 48
WIRE 384 64 336 64
WIRE -672 80 -672 32
WIRE 672 80 672 48
WIRE 384 96 384 64
WIRE 944 96 944 64
WIRE 272 112 240 112
WIRE -624 160 -624 32
WIRE 80 160 80 -112
WIRE 672 160 672 144
WIRE -480 208 -480 144
WIRE -272 208 -272 128
WIRE -272 208 -480 208
WIRE -48 208 -48 144
WIRE -48 208 -272 208
WIRE 240 208 240 112
WIRE 384 208 384 176
WIRE 384 208 240 208
WIRE 384 224 384 208
WIRE -480 256 -480 208
WIRE -624 304 -624 240
WIRE 80 304 80 240
WIRE 80 304 -624 304
WIRE 144 304 144 -16
WIRE 144 304 80 304
WIRE 384 304 384 288
WIRE 384 304 144 304
WIRE 736 304 736 64
WIRE 736 304 384 304
WIRE 1008 304 1008 -48
WIRE 1008 304 736 304
FLAG -480 256 0
FLAG -512 -16 f2
FLAG -16 -16 f1
FLAG -672 80 0
FLAG 672 160 0
FLAG 944 96 0
FLAG 1152 -80 f1-f2
SYMBOL voltage -480 48 R0
WINDOW 3 24 96 Invisible 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 1 20k)
SYMATTR InstName V1
SYMATTR Value2 AC 1
SYMBOL voltage -48 48 M0
WINDOW 3 24 96 Invisible 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 1 25k)
SYMATTR InstName V2
SYMATTR Value2 AC 1
SYMBOL res -352 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res -64 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL diode -176 -32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode -352 0 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL res -288 32 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 64 -240 R0
WINDOW 0 -40 30 Left 2
WINDOW 3 -49 61 Left 2
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res 64 144 R0
WINDOW 0 -41 39 Left 2
WINDOW 3 -55 73 Left 2
SYMATTR InstName R6
SYMATTR Value 113k
SYMBOL Comparators\\LT1711 160 -96 R0
WINDOW 0 35 -80 Left 2
WINDOW 3 11 -48 Left 2
SYMATTR InstName U1
SYMBOL res 368 80 R0
WINDOW 0 -38 45 Left 2
WINDOW 3 -48 73 Left 2
SYMATTR InstName R7
SYMATTR Value 20k
SYMBOL cap 400 288 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 20n
SYMBOL Digital\\or 304 -144 R0
WINDOW 0 -23 10 Left 2
SYMATTR InstName A3
SYMATTR SpiceLine trise 1e-7 tfall 1e-7 vhigh 3V vlow -3V
SYMBOL Digital\\or 304 144 M180
WINDOW 0 -19 117 Left 2
SYMATTR InstName A4
SYMATTR SpiceLine trise 1e-7 tfall 1e-7 vhigh 3V vlow -3v
SYMBOL res 512 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 656 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL cap 640 -80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL cap 688 144 R180
WINDOW 0 45 35 Left 2
WINDOW 3 20 5 Left 2
SYMATTR InstName C4
SYMATTR Value 5n
SYMBOL res 928 -80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res 512 -224 R0
SYMATTR InstName R10
SYMATTR Value 82k
SYMBOL res 928 -32 R0
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL res 1072 -192 R0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL Opamps\\LT1007 736 -32 R0
SYMATTR InstName U2
SYMBOL Opamps\\LT1007 1008 -144 R0
SYMATTR InstName U3
SYMBOL Misc\\battery -624 -208 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 3
SYMBOL Misc\\battery -624 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V6
SYMATTR Value 3
TEXT -600 368 Left 2 !.tran 10ms
TEXT -600 336 Left 2 !;ac oct 1024 1000 50000

--
JF
 
On Oct 29, 4:23 pm, John Fields <jfie...@austininstruments.com> wrote:
On Fri, 28 Oct 2011 01:15:09 -0700 (PDT), fred ander

fredander...@gmail.com> wrote:
Greetings to All:  There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr.  Does anyone have any ideas as to what
to use for an ultrasonic
mixer?  Thank you 4 your time & attention.

---

Not quite your conventional double-balanced mixer, but just for fun:

Version 4
SHEET 1 1716 1092
WIRE 80 -256 -624 -256
WIRE 160 -256 80 -256
WIRE 528 -256 160 -256
WIRE 736 -256 528 -256
WIRE 1008 -256 736 -256
WIRE 80 -224 80 -256
WIRE 528 -208 528 -256
WIRE -624 -192 -624 -256
WIRE 1088 -192 944 -192
WIRE 1088 -176 1088 -192
WIRE 160 -144 160 -256
WIRE 80 -112 80 -144
WIRE 128 -112 80 -112
WIRE 272 -112 208 -112
WIRE 1008 -112 1008 -256
WIRE 944 -96 944 -192
WIRE 976 -96 944 -96
WIRE 128 -80 -256 -80
WIRE 1088 -80 1088 -96
WIRE 1088 -80 1040 -80
WIRE 1152 -80 1088 -80
WIRE 384 -64 336 -64
WIRE 528 -64 528 -128
WIRE 576 -64 528 -64
WIRE 672 -64 640 -64
WIRE 800 -64 672 -64
WIRE 832 -64 800 -64
WIRE 976 -64 912 -64
WIRE 272 -48 240 -48
WIRE 384 -32 384 -64
WIRE -480 -16 -512 -16
WIRE -448 -16 -480 -16
WIRE -352 -16 -368 -16
WIRE -272 -16 -288 -16
WIRE -256 -16 -256 -80
WIRE -256 -16 -272 -16
WIRE -240 -16 -256 -16
WIRE -160 -16 -176 -16
WIRE -48 -16 -80 -16
WIRE -16 -16 -48 -16
WIRE 144 -16 144 -48
WIRE 160 -16 160 -48
WIRE 160 -16 144 -16
WIRE 176 -16 176 -48
WIRE 176 -16 160 -16
WIRE 240 -16 240 -48
WIRE 944 -16 944 -96
WIRE 736 0 736 -256
WIRE 240 16 384 -32
WIRE 672 16 672 -64
WIRE 704 16 672 16
WIRE -624 32 -624 -112
WIRE -624 32 -672 32
WIRE 384 32 240 -16
WIRE 800 32 800 -64
WIRE 800 32 768 32
WIRE -272 48 -272 -16
WIRE 240 48 240 16
WIRE 272 48 240 48
WIRE 384 48 384 32
WIRE 416 48 384 48
WIRE 528 48 528 -64
WIRE 528 48 496 48
WIRE 560 48 528 48
WIRE 672 48 640 48
WIRE 704 48 672 48
WIRE -480 64 -480 -16
WIRE -48 64 -48 -16
WIRE 384 64 384 48
WIRE 384 64 336 64
WIRE -672 80 -672 32
WIRE 672 80 672 48
WIRE 384 96 384 64
WIRE 944 96 944 64
WIRE 272 112 240 112
WIRE -624 160 -624 32
WIRE 80 160 80 -112
WIRE 672 160 672 144
WIRE -480 208 -480 144
WIRE -272 208 -272 128
WIRE -272 208 -480 208
WIRE -48 208 -48 144
WIRE -48 208 -272 208
WIRE 240 208 240 112
WIRE 384 208 384 176
WIRE 384 208 240 208
WIRE 384 224 384 208
WIRE -480 256 -480 208
WIRE -624 304 -624 240
WIRE 80 304 80 240
WIRE 80 304 -624 304
WIRE 144 304 144 -16
WIRE 144 304 80 304
WIRE 384 304 384 288
WIRE 384 304 144 304
WIRE 736 304 736 64
WIRE 736 304 384 304
WIRE 1008 304 1008 -48
WIRE 1008 304 736 304
FLAG -480 256 0
FLAG -512 -16 f2
FLAG -16 -16 f1
FLAG -672 80 0
FLAG 672 160 0
FLAG 944 96 0
FLAG 1152 -80 f1-f2
SYMBOL voltage -480 48 R0
WINDOW 3 24 96 Invisible 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 1 20k)
SYMATTR InstName V1
SYMATTR Value2 AC 1
SYMBOL voltage -48 48 M0
WINDOW 3 24 96 Invisible 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 1 25k)
SYMATTR InstName V2
SYMATTR Value2 AC 1
SYMBOL res -352 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res -64 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL diode -176 -32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode -352 0 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL res -288 32 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 64 -240 R0
WINDOW 0 -40 30 Left 2
WINDOW 3 -49 61 Left 2
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res 64 144 R0
WINDOW 0 -41 39 Left 2
WINDOW 3 -55 73 Left 2
SYMATTR InstName R6
SYMATTR Value 113k
SYMBOL Comparators\\LT1711 160 -96 R0
WINDOW 0 35 -80 Left 2
WINDOW 3 11 -48 Left 2
SYMATTR InstName U1
SYMBOL res 368 80 R0
WINDOW 0 -38 45 Left 2
WINDOW 3 -48 73 Left 2
SYMATTR InstName R7
SYMATTR Value 20k
SYMBOL cap 400 288 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 20n
SYMBOL Digital\\or 304 -144 R0
WINDOW 0 -23 10 Left 2
SYMATTR InstName A3
SYMATTR SpiceLine trise 1e-7 tfall 1e-7 vhigh 3V vlow -3V
SYMBOL Digital\\or 304 144 M180
WINDOW 0 -19 117 Left 2
SYMATTR InstName A4
SYMATTR SpiceLine trise 1e-7 tfall 1e-7 vhigh 3V vlow -3v
SYMBOL res 512 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 656 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL cap 640 -80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL cap 688 144 R180
WINDOW 0 45 35 Left 2
WINDOW 3 20 5 Left 2
SYMATTR InstName C4
SYMATTR Value 5n
SYMBOL res 928 -80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res 512 -224 R0
SYMATTR InstName R10
SYMATTR Value 82k
SYMBOL res 928 -32 R0
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL res 1072 -192 R0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL Opamps\\LT1007 736 -32 R0
SYMATTR InstName U2
SYMBOL Opamps\\LT1007 1008 -144 R0
SYMATTR InstName U3
SYMBOL Misc\\battery -624 -208 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 3
SYMBOL Misc\\battery -624 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V6
SYMATTR Value 3
TEXT -600 368 Left 2 !.tran 10ms
TEXT -600 336 Left 2 !;ac oct 1024 1000 50000

--
JF
Click to expand...
*****************************************************
I'm sorry ! I have absolutely no clue what this list
of #s means and/or what it is used for
fredander
 
fred ander explained :
On Oct 29, 4:23 pm, John Fields <jfie...@austininstruments.com> wrote:
On Fri, 28 Oct 2011 01:15:09 -0700 (PDT), fred ander

fredander...@gmail.com> wrote:
Greetings to All:  There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr.  Does anyone have any ideas as to what
to use for an ultrasonic
mixer?  Thank you 4 your time & attention.

---

Not quite your conventional double-balanced mixer, but just for fun:

Version 4
SHEET 1 1716 1092
WIRE 80 -256 -624 -256
WIRE 160 -256 80 -256
WIRE 528 -256 160 -256
WIRE 736 -256 528 -256
WIRE 1008 -256 736 -256
WIRE 80 -224 80 -256
WIRE 528 -208 528 -256
WIRE -624 -192 -624 -256
WIRE 1088 -192 944 -192
WIRE 1088 -176 1088 -192
WIRE 160 -144 160 -256
WIRE 80 -112 80 -144
WIRE 128 -112 80 -112
WIRE 272 -112 208 -112
WIRE 1008 -112 1008 -256
WIRE 944 -96 944 -192
WIRE 976 -96 944 -96
WIRE 128 -80 -256 -80
WIRE 1088 -80 1088 -96
WIRE 1088 -80 1040 -80
WIRE 1152 -80 1088 -80
WIRE 384 -64 336 -64
WIRE 528 -64 528 -128
WIRE 576 -64 528 -64
WIRE 672 -64 640 -64
WIRE 800 -64 672 -64
WIRE 832 -64 800 -64
WIRE 976 -64 912 -64
WIRE 272 -48 240 -48
WIRE 384 -32 384 -64
WIRE -480 -16 -512 -16
WIRE -448 -16 -480 -16
WIRE -352 -16 -368 -16
WIRE -272 -16 -288 -16
WIRE -256 -16 -256 -80
WIRE -256 -16 -272 -16
WIRE -240 -16 -256 -16
WIRE -160 -16 -176 -16
WIRE -48 -16 -80 -16
WIRE -16 -16 -48 -16
WIRE 144 -16 144 -48
WIRE 160 -16 160 -48
WIRE 160 -16 144 -16
WIRE 176 -16 176 -48
WIRE 176 -16 160 -16
WIRE 240 -16 240 -48
WIRE 944 -16 944 -96
WIRE 736 0 736 -256
WIRE 240 16 384 -32
WIRE 672 16 672 -64
WIRE 704 16 672 16
WIRE -624 32 -624 -112
WIRE -624 32 -672 32
WIRE 384 32 240 -16
WIRE 800 32 800 -64
WIRE 800 32 768 32
WIRE -272 48 -272 -16
WIRE 240 48 240 16
WIRE 272 48 240 48
WIRE 384 48 384 32
WIRE 416 48 384 48
WIRE 528 48 528 -64
WIRE 528 48 496 48
WIRE 560 48 528 48
WIRE 672 48 640 48
WIRE 704 48 672 48
WIRE -480 64 -480 -16
WIRE -48 64 -48 -16
WIRE 384 64 384 48
WIRE 384 64 336 64
WIRE -672 80 -672 32
WIRE 672 80 672 48
WIRE 384 96 384 64
WIRE 944 96 944 64
WIRE 272 112 240 112
WIRE -624 160 -624 32
WIRE 80 160 80 -112
WIRE 672 160 672 144
WIRE -480 208 -480 144
WIRE -272 208 -272 128
WIRE -272 208 -480 208
WIRE -48 208 -48 144
WIRE -48 208 -272 208
WIRE 240 208 240 112
WIRE 384 208 384 176
WIRE 384 208 240 208
WIRE 384 224 384 208
WIRE -480 256 -480 208
WIRE -624 304 -624 240
WIRE 80 304 80 240
WIRE 80 304 -624 304
WIRE 144 304 144 -16
WIRE 144 304 80 304
WIRE 384 304 384 288
WIRE 384 304 144 304
WIRE 736 304 736 64
WIRE 736 304 384 304
WIRE 1008 304 1008 -48
WIRE 1008 304 736 304
FLAG -480 256 0
FLAG -512 -16 f2
FLAG -16 -16 f1
FLAG -672 80 0
FLAG 672 160 0
FLAG 944 96 0
FLAG 1152 -80 f1-f2
SYMBOL voltage -480 48 R0
WINDOW 3 24 96 Invisible 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 1 20k)
SYMATTR InstName V1
SYMATTR Value2 AC 1
SYMBOL voltage -48 48 M0
WINDOW 3 24 96 Invisible 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 1 25k)
SYMATTR InstName V2
SYMATTR Value2 AC 1
SYMBOL res -352 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res -64 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL diode -176 -32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode -352 0 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL res -288 32 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 64 -240 R0
WINDOW 0 -40 30 Left 2
WINDOW 3 -49 61 Left 2
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res 64 144 R0
WINDOW 0 -41 39 Left 2
WINDOW 3 -55 73 Left 2
SYMATTR InstName R6
SYMATTR Value 113k
SYMBOL Comparators\\LT1711 160 -96 R0
WINDOW 0 35 -80 Left 2
WINDOW 3 11 -48 Left 2
SYMATTR InstName U1
SYMBOL res 368 80 R0
WINDOW 0 -38 45 Left 2
WINDOW 3 -48 73 Left 2
SYMATTR InstName R7
SYMATTR Value 20k
SYMBOL cap 400 288 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 20n
SYMBOL Digital\\or 304 -144 R0
WINDOW 0 -23 10 Left 2
SYMATTR InstName A3
SYMATTR SpiceLine trise 1e-7 tfall 1e-7 vhigh 3V vlow -3V
SYMBOL Digital\\or 304 144 M180
WINDOW 0 -19 117 Left 2
SYMATTR InstName A4
SYMATTR SpiceLine trise 1e-7 tfall 1e-7 vhigh 3V vlow -3v
SYMBOL res 512 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 656 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL cap 640 -80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL cap 688 144 R180
WINDOW 0 45 35 Left 2
WINDOW 3 20 5 Left 2
SYMATTR InstName C4
SYMATTR Value 5n
SYMBOL res 928 -80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res 512 -224 R0
SYMATTR InstName R10
SYMATTR Value 82k
SYMBOL res 928 -32 R0
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL res 1072 -192 R0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL Opamps\\LT1007 736 -32 R0
SYMATTR InstName U2
SYMBOL Opamps\\LT1007 1008 -144 R0
SYMATTR InstName U3
SYMBOL Misc\\battery -624 -208 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 3
SYMBOL Misc\\battery -624 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V6
SYMATTR Value 3
TEXT -600 368 Left 2 !.tran 10ms
TEXT -600 336 Left 2 !;ac oct 1024 1000 50000

--
JF

*****************************************************
I'm sorry ! I have absolutely no clue what this list
of #s means and/or what it is used for
fredander
Click to expand...
Just my Point! (in Electronics Design).

--
John G.
 
Phil Allison presented the following explanation :
"John G"


LEARN TO TRIM


Yes you are correct I should have deleted the rubbish that was of no
Click to expand...
use to the OP.
He did not recognise it, much less be able to make any use of it.

--
John G.
 
On Oct 29, 9:09 pm, John G <greent...@ozemail.com.au> wrote:
Phil Allison presented the following explanation :> "John G"

LEARN  TO  TRIM  

Yes you are correct I should have deleted the rubbish that was of no
use to the OP.
He did not recognise it, much less be able to make any use of it.

--
John G.
Click to expand...
***************************************************************************
I'm sorry! I did not mean to cause any problems.
I apologize! ! !
I will try not to ask any more questions of this forum.
fredander
 
fred ander wrote:
On Oct 29, 9:09 pm, John G <greent...@ozemail.com.au> wrote:
Phil Allison presented the following explanation :> "John G"

LEARN TO TRIM
Yes you are correct I should have deleted the rubbish that was of no
use to the OP.
He did not recognise it, much less be able to make any use of it.

--
John G.

***************************************************************************
I'm sorry! I did not mean to cause any problems.
I apologize! ! !
I will try not to ask any more questions of this forum.
fredander
And *HOW* were you meant to recognise it? You would need the prior
Click to expand...
knowledge that SPICE programs (circuit simulators) commonly store the
circuit in a text file that looks like that.

You need to get and install a SPICE program (The free LTSPICE is
recommended.)
<http://www.linear.com/designtools/software/>
and paste the whole block of mystery lines as originally posted (not as
later quoted) into an new text file.

Rename the file to have the extension .asc - e.g. ultrasonic_mixer.asc -
and you should now be able to open it with LTSPICE and see the circuit
diagram. You can also simulate it.

DONT apologise for stuff you are not responsible for. Phil Allison is
technically competent but is usually abusive. He is believed to have
severe mental health issues. If his answers are helpful, great, but the
rest of the time, ignore *ANYTHING* non-technical he posts. There are
other ****holes here as well and some full time trolls - just ignore them!

DO ask further questions here. sci.electronics.basics was a perfectly
appropriate place for your question.

This post was deliberately not trimmed to upset the netiquette Nazis.

--
Ian Malcolm. London, ENGLAND. (NEWSGROUP REPLY PREFERRED)
ianm[at]the[dash]malcolms[dot]freeserve[dot]co[dot]uk
[at]=@, [dash]=- & [dot]=. *Warning* HTML & >32K emails --> NUL:
 
"Ian Fuckwit Moron"


DONT apologise for stuff you are not responsible for.
Click to expand...

** The OP is a dickhead - he needs to apologise for everything.


Phil Allison is technically competent but is usually abusive.
Click to expand...

** Any "abuse" is always fully justified by the circumstances and the people
involved.

A rule YOU do not follow.


He is believed to have severe mental health issues.
Click to expand...

** Is that not the grossest abuse and utterly without justification ?

Listen FUCKHEAD -

the one here with OBVIOUS metal health issues is YOU.

Cos YOU are a smug, bullshitting pile ASD fucked shit.

FOAD.




...... Phil
 
On Sun, 30 Oct 2011 15:09:20 +1100, John G <greentest@ozemail.com.au>
wrote:

Phil Allison presented the following explanation :
"John G"


LEARN TO TRIM


Yes you are correct I should have deleted the rubbish that was of no
use to the OP.
He did not recognise it, much less be able to make any use of it.
Click to expand...
---
But, he acknowledged his ignorance and was supplied with the tools he
needed to be able to view the schematic and run the simulation.

You, on the other hand - even though you're all mouth - didn't lift a
finger to help the OP or make a comment about the circuit.

Instead, you seem intent on continuing a personal vendetta.

That's fine with me, but you've already proved that you're a
malevolent little creep, so you'll have to work your way up from
there.

--
JF
 
On Sun, 30 Oct 2011 00:29:18 -0700 (PDT), fred ander
<fredander503@gmail.com> wrote:

On Oct 29, 9:09 pm, John G <greent...@ozemail.com.au> wrote:
Phil Allison presented the following explanation :> "John G"

LEARN  TO  TRIM  

Yes you are correct I should have deleted the rubbish that was of no
use to the OP.
He did not recognise it, much less be able to make any use of it.

--
John G.

***************************************************************************
I'm sorry! I did not mean to cause any problems.
I apologize! ! !
I will try not to ask any more questions of this forum.
fredander
Click to expand...
---
You've done nothing wrong, so please don't be put off by the bad
behavior of some here.

As Ian pointed out, the "mystery text" is an LTspice circuit list
which can be turned into a schematic and simulated using the procedure
he outlined.

If you have any questions about the circuit, please post back and I'll
be happy to clear up what I can. :)


--
JF
 
On Sat, 29 Oct 2011 17:27:08 -0700, fred ander wrote:

I'm sorry ! I have absolutely no clue what this list
of #s means and/or what it is used for
Click to expand...
It's an LTSpice listing.

LTSpice is available, free, from the Linear Technology website. Download
and install it, copy the lines of the newsgroup article (from "Version 4"
thru the last "TEXT" line) into any old text editor, and save it as, say,
"jfields_mixer.asc", then start LTSpice, and open your saved .asc file
there.

John's schematic should appear before your eyes, and you can run
analyses on it, plot waveforms, and edit the schematic.

LTSpice is becoming the de facto standard for exchanging, comparing, and
discussing circuit suggestions on sci.electronics newsgroups, principally
because its source files are pure ASCII text.

--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)
 
He is believed to have severe mental health issues.


** Is that not the grossest abuse and utterly without justification ?

Listen the one here with OBVIOUS metal health issues is YOU.

..... Phil
Click to expand...
We could vote!

Ian Healthy (#) Severe Mental Issues ( )

Phil Healthy ( ) Severe Mental Issues (#)

Sorry Phil the vote doesn't look good so far, the poles aren't
closed in Australia yet, maybe that will turn things in your favor.
Or not.
Mikek
 
On Oct 28, 6:24 pm, Tim Wescott <t...@seemywebsite.com> wrote:
On Fri, 28 Oct 2011 01:15:09 -0700, fred ander wrote:
Greetings to All:  There are RF mixers such as the SBL-1 which works
well in the MHz range.
I am interested in mixing 25KHz with 20KHz to get 5KHz and 45KHz such
that I can hear the
difference thru an amp & spkr.  Does anyone have any ideas as to what to
use for an ultrasonic
mixer?  Thank you 4 your time & attention.

Anything that multiplies.

* An analog multiplier.
* A handful of 4052 analog multipliers, some op-amps,
  and some logic (http://www.wescottdesign.com/articles/MSK/page_76.html)
* A handful of better quality analog switches and some logic.
* An NE612.
* A diode-ring mixer, either fed with some Great Big Transformers,
  or fed with balanced signals that are generated using op-amps.
* Two ADC channels (if the signals are already in the analog world)
  and a DSP chip.

etc.

--www.wescottdesign.com
Click to expand...
Dang, I forgot all about the diode ring.... And we sell a product
that uses one!

(Are diode rings in the mini-circuits RF mixers?)

Thanks Tim

George H.
 
On Oct 30, 3:29 am, fred ander <fredander...@gmail.com> wrote:
On Oct 29, 9:09 pm, John G <greent...@ozemail.com.au> wrote:

Phil Allison presented the following explanation :> "John G"

LEARN  TO  TRIM  

Yes you are correct I should have deleted the rubbish that was of no
use to the OP.
He did not recognise it, much less be able to make any use of it.

--
John G.

***************************************************************************
I'm sorry!  I did not mean to cause any problems.
I apologize! ! !
Click to expand...

I will try not to ask any more questions of this forum.
fredander
Click to expand...
Nah, ask more question! That's fine. You do need to have some thick
skin at times.

George H.
 
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