Hi John,
Thank you very much for your input!
120V 4W is the lowest rating I could find locally.
It worked, with a LM741 opamp, and yielded 6Vp-p 1000HZ
output while THD is lower than -70dB.
I just want to get a better THD result like -100dB.
73,
xe3po
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--- In LTspice@..., John Woodgate <jmw@...> wrote:
In message <knhohb+fa48@...>, dated Wed, 22 May 2013, xe3po
<xe3po@...> writes:
The hurdle right now is that I couldn't find a model for the light bulb
in the LTspice component lib.
If this really is a 120 V 4 W lamp, it isn't a good choice, because the
very limited input power hardly raises the filament temperature above
ambient, so as the ambient temperature varies, the output voltage
varies. That lamp was probably good for Hewlett and Packard, because
they were using tubes.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
They took me to a specialist burns unit - and made me learn 'To a haggis'.
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
