A CIRCUIT FOR ELIMINATING ERRATiC SWITCH CONTACT OUTPUT
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2001-Dec-19
R6 output This circuit debounces a mercury switch in motion. Its output indicates the present status of the switch (dominantly open or closed). Debouncing is accomplished using a capacitor (Cl) voltage applied to the input of a transistor switch, Q3. When the capacitor voltage exceeds a threshold value, the transistor switch conducts. Both charging and discharging functions of the capacitor are employed.