In search of 4B3A Microswitch Keyswitches (for a restoration, not a keyboard collector!)

Al Kossow aek at
Fri Jul 10 16:28:59 CDT 2020

On 7/10/20 2:14 PM, Al Kossow via cctalk wrote:

> There are a couple of serious researchers out there who do useful work, here is what exists for the SD switch

the schematic of the 1660 microswitch keyboard can be found on page 235 of the maint manual

it uses x/y matrix style hall modules

the drawing you pointed to uses pulsed output switches

neither type will work in his application

More information about the cctalk mailing list