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A CIRCUIT FOR ELIMINATING ERRATiC SWITCH CONTACT OUTPUT

IP.com Disclosure Number: IPCOM000006260D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2001-Dec-19

Publishing Venue

Motorola

Related People

Authors:
Robert Ford

Abstract

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.