erstwhile ???

[phil]

Someone mentioned the erstwhile multivibrator, is there such
a thing, yahoo doesn't have it ?

 

[CFoley1064]

Subject: erstwhile ???

From: "phil" [email protected]
Date: 4/14/2004 7:44 PM Central Standard Time
Message-id: <[email protected]>

Someone mentioned the erstwhile multivibrator, is there such
a thing, yahoo doesn't have it ?

Hi, Phil. You can check Google for anything in these newsgroups more than a
few days old. Looking at the thread, they were talking about an FM transmitter
oscillator. I'm not sure what happened to the link, but it's not accessible
right now, so I can't say for sure. It seems they were either talking about a
Hartley oscillator or a "Kaliatron" oscillator. The second comes up blank both
on Google and in the attic upstairs. The use of the word "erstwhile" was a
rhetorical flourish someone used to talk about oscillator exposition from
memory in one of his theory classes. The word means "former" or "in the past".

Good luck
Chris

 

[phil]

I know this thread, the link is still working ('cause it's mine)
Thanks for pointing out that erstwhile is actally a word, I
think this poster was trying to confuse me back there.
I think it is a Hartley after all.

 

[phil]

probably not, ignore me.

 

[Dbowey]

aaaaaaaaaaaaaaaa posted:

<< probably not, ignore me. >>

If you mean probably not a Hartley, I agree. It's a multivibrator using LC
instead of RC.

Consider yourself ignored.

Don

 

[phil]

<< probably not, ignore me. >>

If you mean probably not a Hartley, I agree. It's a multivibrator using LC
instead of RC.

Consider yourself ignored.

Don

So what is the difference between a multivibrator and an oscillator such as
Hartley ?

 

[dB]

[email protected] (CFoley1064) wrote in message

..... a "Kaliatron" oscillator ..... comes up blank both
on Google and in the attic upstairs.

That's because it's spelled Kalitron.

 

[Dbowey]

Phil posted:

Don posted

If you mean probably not a Hartley, I agree. It's a multivibrator using LC
instead of RC.

Consider yourself ignored.

Don

So what is the difference between a multivibrator and an oscillator such as
Hartley ? >>

A significant difference is the the Hartley uses a tap on an inductor to obtain
feedback.

A multivibrator typically uses a capacitor from each output to the input of
it's mirror stage.

Google can give you everything you need to know about each.

Don

 

[JeffM]

the difference between a multivibrator and an oscillator such as
Hartley ?

phil

http://images.google.com/images?&q=oscillator+schematic+integritynet+OR+biotelem
http://images.google.com/images?&q=multivibrator+schematic+OR+drawing+integritynet+OR+ckt7_1_1

Oscillator == sinusoidal (typically)
Multivibrator† == square wave (typically) † a type of relaxation
oscillator
http://groups.google.com/groups?&th...r=lang_en&ie=UTF-8&oe=UTF-8&safe=off&filter=0

 

[phil]

Phil posted:

Don posted



So what is the difference between a multivibrator and an oscillator such as
Hartley ? >>

A significant difference is the the Hartley uses a tap on an inductor to obtain
feedback.

A multivibrator typically uses a capacitor from each output to the input of
it's mirror stage.

Is a multivibrator the same as an Astable, if so, what is the RC time
constant
for the circuit in question, and if the oscillation is determined by the
capacitors
from output to input, how does the tank circuit manage to alter this
frequency
during the modulation.

 

[JeffM]

Is a multivibrator the same as an Astable

phil

Bistable multivibrator == flip-flop
Monostable multivibrator == one-shot
Astable multivibrator == free-running

if so, what is the RC time constant

http://www.google.com/search?&q=astable-multivibrator+time-constant