From: Tim Williams on
"Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in
message news:1q3316tr0ak2u8rdhr974agci3svmobtjo(a)4ax.com...
> Isn't there some young buck out there who can analyze circuits ?:-(

Me?

Go do it yourself Jim.

Tim

--
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms


From: John Fields on
On Fri, 11 Jun 2010 07:02:03 -0500, John Fields
<jfields(a)austininstruments.com> wrote:

>On 10 Jun 2010 13:23:55 -0700, Winfield Hill
><Winfield_member(a)newsguy.com> wrote:
>
>
>> In a ringing bell application, as the supply voltage sags,
>> and the amplitude drops, I imagine the circuit will move
>> from class C back to class A operation, before stopping.
>
>---
>Why imagine?
>
>Here's a circuit list that'll show it all _and_ it'll create a .wav
>file, "bong.wav" in whatever folder the cicuit's in, so you can hear
>it.
>
>Enjoy! :-)

---
Oops...
Here it is:

Version 4
SHEET 1 936 680
WIRE -384 48 -592 48
WIRE -320 48 -384 48
WIRE -112 48 -224 48
WIRE 16 48 -112 48
WIRE 112 48 16 48
WIRE 16 64 16 48
WIRE 112 64 112 48
WIRE -384 96 -384 48
WIRE -112 96 -112 48
WIRE -448 144 -496 144
WIRE 16 160 16 128
WIRE 112 160 112 144
WIRE 112 160 16 160
WIRE -496 176 -496 144
WIRE -592 192 -592 48
WIRE -272 192 -272 112
WIRE -272 192 -384 192
WIRE 16 192 16 160
WIRE -112 240 -112 176
WIRE -48 240 -112 240
WIRE -384 272 -384 192
WIRE -272 272 -272 192
WIRE -496 288 -496 256
WIRE -112 304 -112 240
WIRE 16 320 16 288
WIRE 112 320 16 320
WIRE 16 336 16 320
WIRE 112 336 112 320
WIRE -592 432 -592 272
WIRE -496 432 -496 368
WIRE -496 432 -592 432
WIRE -384 432 -384 352
WIRE -384 432 -496 432
WIRE -272 432 -272 336
WIRE -272 432 -384 432
WIRE -112 432 -112 368
WIRE -112 432 -272 432
WIRE 16 432 16 416
WIRE 16 432 -112 432
WIRE 112 432 112 416
WIRE 112 432 16 432
WIRE -592 528 -592 432
FLAG -592 528 0
SYMBOL ind2 96 48 R0
SYMATTR InstName L1
SYMATTR Value 20e-3
SYMATTR Type ind
SYMBOL ind2 96 432 M180
WINDOW 0 36 80 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName L2
SYMATTR Value 500e-6
SYMATTR Type ind
SYMATTR SpiceLine Rser=.01
SYMBOL npn -48 192 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res -128 80 R0
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL cap 0 64 R0
SYMATTR InstName C1
SYMATTR Value 10e-6
SYMBOL voltage -592 176 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 24 104 Invisible 0
SYMATTR Value 5
SYMATTR InstName V2
SYMBOL pnp -448 192 M180
SYMATTR InstName Q3
SYMATTR Value 2N4403
SYMBOL voltage -496 272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 24 104 Invisible 0
SYMATTR Value PULSE(5 0 0 1e-6 1e-6 .01)
SYMATTR InstName V1
SYMBOL npn -320 112 R270
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL cap -288 272 R0
SYMATTR InstName C4
SYMATTR Value 1e-6
SYMBOL res -400 256 R0
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL res -512 160 R0
SYMATTR InstName R3
SYMATTR Value 1000
SYMBOL cap -128 304 R0
SYMATTR InstName C2
SYMATTR Value 1e-7
SYMBOL res 0 320 R0
SYMATTR InstName R4
SYMATTR Value 750
TEXT 32 184 Left 0 !K1 L1 L2 1
TEXT -528 464 Left 0 !.tran 5
TEXT -528 496 Left 0 !.wave .\\bong.wav 8 10000 N008

From: John Larkin on
On Fri, 11 Jun 2010 07:02:44 -0500, "Tim Williams"
<tmoranwms(a)charter.net> wrote:

>"Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in
>message news:1q3316tr0ak2u8rdhr974agci3svmobtjo(a)4ax.com...
>> Isn't there some young buck out there who can analyze circuits ?:-(
>
>Me?
>
>Go do it yourself Jim.
>
>Tim

I like the way it works with a very high turns ratio, very small AC
drive at the emitter. But at lower ratios, it gets very nonlinear and
becomes, if that means anything, a tuned blocking oscillator. The base
capacitor value would be lowered so that the cap recharges a bunch
during a oscillatory cycle.

I'm sure JT and JF will spend the next week diligently searching for a
set of values that will make my circuit not work. Then they'll crow,
or rather, cluck about it. That's OK: as Woody Allen says, we need the
eggs.

John

From: Jeroen Belleman on
John Larkin wrote:
>
> I like the way it works with a very high turns ratio, very small AC
> drive at the emitter. But at lower ratios, it gets very nonlinear and
> becomes, if that means anything, a tuned blocking oscillator. The base
> capacitor value would be lowered so that the cap recharges a bunch
> during a oscillatory cycle.
>
> I'm sure JT and JF will spend the next week diligently searching for a
> set of values that will make my circuit not work. Then they'll crow,
> or rather, cluck about it. That's OK: as Woody Allen says, we need the
> eggs.

I made it squeg. Maybe that will please them.

Jeroen Belleman
From: John Larkin on
On Fri, 11 Jun 2010 17:15:50 +0200, Jeroen Belleman
<jeroen(a)nospam.please> wrote:

>John Larkin wrote:
>>
>> I like the way it works with a very high turns ratio, very small AC
>> drive at the emitter. But at lower ratios, it gets very nonlinear and
>> becomes, if that means anything, a tuned blocking oscillator. The base
>> capacitor value would be lowered so that the cap recharges a bunch
>> during a oscillatory cycle.
>>
>> I'm sure JT and JF will spend the next week diligently searching for a
>> set of values that will make my circuit not work. Then they'll crow,
>> or rather, cluck about it. That's OK: as Woody Allen says, we need the
>> eggs.
>
>I made it squeg. Maybe that will please them.
>
>Jeroen Belleman


Sloman is our resident squegging expert.

John

First  |  Prev  |  Next  |  Last
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Prev: Twin T circuit wanted
Next: And blocking oscillators