[sdiy] What book is this ladder filter from?

[Tim Stinchcombe]

Hi list,
	Can anyone tell what book the diode ladder filter in this old Paul
Maddox 'Modulus' newsletter is from?:

http://www.syntiac.com/ext/modulus5.pdf

The print style strongly suggests one of the old Bernard Babani Publishing
'pocket book' types, of which I have several, including

'Electronic Music Projects', and
'More Electronic Music Projects', both R.A.Penfold,

and it is neither of them. There used to be a copy of 'Electronic
Synthesizer Construction' (also by Penfold) on the net, at andrews.edu (Tony
Clark's pages I think), but the link seems long dead.

Anyone recognise where it is from?

Thanks,
	Tim
__________________________________________________________
Tim Stinchcombe 

Cheltenham, Glos, UK
email: tim102 at tstinchcombe.freeserve.co.uk