[sdiy] Synth Keyboards and chemical switching

[Peter Blackett]

 Hi ,
that is an interesting point . as far as I know in the mid 1960's some 
of the Eocs people ( Electronic Organ Construction society ) tried using 
car anti freeze to give a controlled attack to the keyboard switching. 
this did seem to work but had problems if you wanted to move the 
keyboard, and also when one of the owners tried to buy some Anti freeze 
in summer !
regards Peter


Edward King Wrote
 >>>>>>>>>>>>>>>>>>>>>>
liquid and chemical based
My wife (chemist and microbiologist) ran off some liquid solutions for 
me which would last a reasonable amount of time, offered reasonably 
linear resistances for a given travel of contacts and were non-toxic and 
non corrosive (ish).  At first she thought I was mad considering putting 
liquids inside an electronic device, but I assured her that if it was 
good enough for the pc market with the liquid cooling systems, it was 
good enough for me....
they tested well, but the packaging was the main problem and leakage 
would have in fact been a major risk.