Re: 555 Timer program (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 27 Aug 2007 19:10:48 -0300
From: Antonio Carlos M. de Queiroz <acmdq@xxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: 555 Timer program (fwd)

Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Sun, 26 Aug 2007 22:43:10 -0500 (GMT-05:00)
> From: gary350@xxxxxxxxxxxxx
>   
>>>> Here is the plan.  I am going to connect the secondary coil of a small 
>>>> modulation transformer in series with the primary coil of the neon.  If I 
>>>> put a signal on the primary of the modulation transformer is should 
>>>> modulate the 120 VAC going into the neon.  The output of the neon should 
>>>> be modulated too.  Turn the dial change the frequency modulation see what 
>>>> happens.
>>>>
>>>>         
Did you calculate the current that will pass trough your modulation 
transformer primary, and consider from
where it would come?
You will only see some effect with slow modulation, because the 
transformer and the primary capacitor will filter
out any high-frequency (audio for example) modulation.
Do you really need a program to calculate the components of a 555 
oscillator?

Antonio Carlos M.de Queiroz