Hmm, neither can I.

The QLF2 circuit can be made to sort of work with several additional
components.

Attached is an all opamp PWM circuit and a hybrid PWM circuit of which the
QFL4 is the lowest part count so far.

wilf



----- Original Message -----
From: "Bill Bigge" <wb23@...>
To: <beam@yahoogroups.com>
Sent: Friday, May 23, 2003 4:42 AM
Subject: RE: [beam] Slow pulsar


> Hmm,
>
> I couldn't get the PWM QLF to work. The LED's just flash on momentarily
> when you apply power.
>
> I don't have any LM324's at the moment so I'll have to play with the
> other one later.
>
> Cheers,
>
> Bill
>
>
> -----------------
> Bill Bigge
> Autonomous Systems Lab
> Room 5A23
> Cognitive and Computing Sciences
> Pevensey-II
> Sussex University
> Brighton
> +44 (0)1273 877621
> -----------------
> <mailto:wb23@...> wb23@...
> www.cogs.susx.ac.uk
>
>
> -----Original Message-----
> From: Wilf Rigter [mailto:wrigter@...]
> Sent: 23 May 2003 07:45
> To: beam@yahoogroups.com
> Subject: Re: [beam] Slow pulsar
>
>
> That was easy!
>
> Although not tested and some values will need tweaking, here is a PWM
> version of the Quad LED Fader. (QLF2)
>
> wilf
>
>
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