My Second Attempt Ever at a PCB Layout... Not The Best Layout In the World I'll Admit but it was a Tight One!
Not Checked But Okay at a Glance...
1590B with Onboard Pots, Pots Mount On the Back of the Board... 3 Jumpers but it was the best I could manage.
Based on the Gaussmarkov Schematic - http://gaussmarkov.net/layouts/hottubes/hottubes-schem.png
Board Measures 53.34 x 53.34
(http://i898.photobucket.com/albums/ac182/Scruffie_Crow/1590BHotTubesSS.gif?t=1292684657)
(http://i898.photobucket.com/albums/ac182/Scruffie_Crow/1590BHotTubes.gif?t=1292688347)
Whether the layout is error-free or not (and I haven't checked, but thanks for posting it), a Hot Tubes will probably fit in a 1590B. Just make sure you leave room for an adaptor input and that you socket the 4049. The HT will run off a 9v battery - I've been doing so since the late 1970's - but it won't do so for very long.
Quote from: Mark Hammer on December 18, 2010, 10:50:35 AM
Whether the layout is error-free or not (and I haven't checked, but thanks for posting it), a Hot Tubes will probably fit in a 1590B. Just make sure you leave room for an adaptor input and that you socket the 4049. The HT will run off a 9v battery - I've been doing so since the late 1970's - but it won't do so for very long.
Well if the layout is right, it'll definitley fit in a 1590B and there's room for the socket round the 4049 too.
Just touched it up a bit now too.
Well... i've either improved this layout or made it worse, you be the judge.
Will still fit a 1590B with a battery though, now has the SPDT mounted on boards and still onboard pots (All Mounted on the back of the board).
J1s connecting point is hidden between R3&4 on the Silk screen, there'll be room though as the resistors are oversized.
(http://i898.photobucket.com/albums/ac182/Scruffie_Crow/HotTubeSS.gif?t=1311024633)
(http://i898.photobucket.com/albums/ac182/Scruffie_Crow/HotTubePCB-1.gif?t=1311025091)
Unverified and the board measures 54.61 x 53.34mm