MC3470

Tony Duell ard at p850ug1.demon.co.uk
Mon Feb 4 16:59:33 CST 2008


> 
> On 03/02/2008 23:59, Tony Duell wrote:
> 
> > Do you mean that? I thought the output (pin 10) pulse width was set byu 
> > the RC network on pins 8 and 9. Do you really mean that the offset adjust 
> > preset is used to get all the pulses equally spaced, rather than occuring 
> > in pairs (which is the most likely result of an imbalance in the cicuit, 
> > I think).
> > 
> > Or do you adjust for 50% duty cycle at some other point?
> 
> You adjust the offset adjust preset for a 50% duty cycle output, 
> according to the Sony manual.

Do I conclude that you've never actually done it? Neither have I, of 
course. I think I am going to have to experiment with a 'spare' drive PCB 
-- I'm sure I can find a drive with ad heads or something. It'll not be 
soon (too many other things to do, but I'll let you know how I get on.

-tony


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