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Switch debouncer uses only one gate: 05/30/2002 EDN -
Design Ideas / The circuit in Figure 1 produces a single
debounced pulse each time you press S1. Moreover, the circuit
uses only logic power from the remote pull-up resistor, R2. You
can use the circuit to detect when a key is pressed in a
nonenergized device, such as a device in a system that's just
coming up from standby |
