This brings back memories :)

The number of times I had to wire up 555 timers for various circuits - it 
must tbe the best known chip in the world :)

Thanks for a stroll down memory lane!

I think I'm going to ahve to go and model an Op-Amp circuit now. Maybe a 
DtoA converter with an ammeter to show the output and LEDs on the inputs... 
The possibilities :D

Thanks for the ideas!

"JS" <bos### [at] yahoocouk> wrote in message 
news:web.46fc3228b72f4cd2b6429ee0@news.povray.org...
> As one who builds electronic circuits I've tried to create a virtual 
> version
> of the famous 555 astable LED flasher. I had problems with the breadboard
> creating the holes; using a loop took too long and without wasn't much
> faster. So, I created the holes of one row in a block just once and then
> used that again and again to build the breadboard.
>
> Any comments please!
>
> James S.
>


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Yeah, that's close. The one I have is made by Philips and is of the type
3R12 (4.5V). Strangely, the longest lead is neagative and the shortest is
positive, breaking with tradition used with most other components.

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"Simon" <povray@*NOSPAM*SOWare.co.uk> wrote:
> This brings back memories :)
>
> The number of times I had to wire up 555 timers for various circuits - it
> must tbe the best known chip in the world :)
>
> Thanks for a stroll down memory lane!
>
> I think I'm going to ahve to go and model an Op-Amp circuit now. Maybe a
> DtoA converter with an ammeter to show the output and LEDs on the inputs...
> The possibilities :D
>
> Thanks for the ideas!
>

I hope that you are not going to go for the easy option and use a 741. How
about using a 709? I know that you would need more external components but
that is where the fun lies :)

Stephen

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"JS" <bos### [at] yahoocouk> wrote in message 
news:web.46fc4425260418cdb6429ee0@news.povray.org...
> Sorry, no picture, I'll try again...
>
Lots of fun things you can do with a 555 (or 556)
See 
http://www.kingcharlesschool.co.uk/admin/files/Public/Departments/5/Downloads/555TIMER.pdf

Some years ago I built a 555-based metronome.
The biggest problem was making a properly calibrated dial for a rotary pot.


DLM

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Whoa, cool asynchronous multivibrator!

My project boards all have tapered square holes though.

---
Bryan Valencia

- I'd rather live with false hope than with false despair.

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> I hope that you are not going to go for the easy option and use a 741. How
> about using a 709? I know that you would need more external components but
> that is where the fun lies :)
>
> Stephen
>

Sorry for the delay in replying - work got in the way of fun. I was 
originally thinking of a 741 but you're right a 709 would be more 
challenging.

I'll post it when done (Give me ~ 6 months :D)

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