Custom component library for ExpressPCB. This is a group of custom components I have assembled for drawing tube circuits with the ExpressSCH schematic drawing program. Last update 5/27/04.
ExpressPCB circuit board file for the self bias CCS. To use you need to install the latest version of ExpressPCB then open this file. Ordering 1 mini board set using this file gets you 12 self bias CCS boards for $59.00. You will need to use a large pair of shears to cut the boards apart. Cut on the fine dividing lines on the top side of the boards.
The old battery bias board using lithium cells
The new battery bias board using 27a 12V alkaline cells. The battery clips can be ordered from Mouser PN 534-51 at 22 cents each.
Assembly guides for CCSs.