Velostat resistance measurements

Thread Starter

Bernard

Joined Aug 7, 2008
5,784
Some time ago the OP wanted to control a buzzer with a pressure switch & the word Velostat came up so on my next order from Digi Key I ordered a sheet, ADAFRUIT 1361, .004 in. thick. I thought some measurements might be useful to someone. Plunger .106 sq. in. covered with Cu foil, Velostat & Cu. plate. 2k @ 2.3 oz., 1k @ 4.5 oz & about 600 ohms @ 16 oz. Small plunger, .081 in. dia. nail head, 2k @ about 8 oz.
The original SW was a sandwich of 1 X 2 in. brass foil .oo1 in. & a filling of Velostat which fed a comparator.
 
Top