Marconi TF1331 Oscilloscope

[Skywave]

Have you tried one of the various Spice packages? LTSpice is completely free, and the schematic drawing is reasonably intuitive as these things go.
I've had the same problem - hence all the schematics on my website were drawn as bitmaps in Paint Shop Pro (an example attached).

Mark

Thanks for that, Mark. No, I haven't tried LTSpice, but have heard of it and have seen drawings that it has produced. I'll put it in my 'things to do' list: I think there's just about enough room left to squeeze it in!
Yes, in the past I have tried the 'ultimate drawing D-I-Y approach' using Corel Photo Paint. And yes, with enough time and patience, you can indeed produce 'things' that are just what you want - but it's a lot of hard work (least, I found it so).
Your examples, seen here, are indeed crisp, clean and well-proportioned.

Al. / March 21 //