Digital-touch-on-off-switch
Only one LED can be illuminated when the circuit is at rest. The illuminated LED is determined by the touch pick-up that last had human contact. Pickup terminal A controls the on condition of LED1, while terminal B controls the on condition of LED2. A 4001 quad two-input NOR gate is connected in an anti-bounce latching circuit that is activated by touching a pickup.
The circuit utilizes a quad two-input NOR gate, specifically the 4001 integrated circuit, to implement an anti-bounce latching mechanism. This design ensures that only one of the two LEDs—LED1 or LED2—can be activated at any given time, preventing any erroneous multiple activations caused by mechanical bouncing of the touch pick-up switch.
When the touch pick-up at terminal A is activated, the corresponding NOR gate output will go low, turning on LED1 while keeping LED2 off. Conversely, when the touch pick-up at terminal B is activated, the output of the associated NOR gate will transition low, illuminating LED2 and turning off LED1. This behavior is critical in applications where distinct visual feedback is necessary based on user interaction.
The anti-bounce feature is essential for reliable operation, as it mitigates the effects of noise and signal fluctuations that can occur when a mechanical switch is engaged. The circuit's design may include capacitive or resistive elements to filter out the rapid toggling of the output that can occur during the initial contact phase of the touch pick-up.
In summary, this circuit effectively employs a 4001 quad NOR gate to create a simple yet effective touch-sensitive LED control system, ensuring that only one LED is illuminated based on the last touch input while maintaining stability through anti-bounce techniques.Only one LED can be on when the circuit is at rest. Which LED is illuminated is determined by the touch pick-up that last had human contact. Pickup terminal A controls the on condition of LEDl, and terminal B controls the on condition of LED2. A 4001 quad two-input NOR gate is connected in an anti-bounce latching circuit that is activated by touching a pickup. 🔗 External reference
The circuit utilizes a quad two-input NOR gate, specifically the 4001 integrated circuit, to implement an anti-bounce latching mechanism. This design ensures that only one of the two LEDs—LED1 or LED2—can be activated at any given time, preventing any erroneous multiple activations caused by mechanical bouncing of the touch pick-up switch.
When the touch pick-up at terminal A is activated, the corresponding NOR gate output will go low, turning on LED1 while keeping LED2 off. Conversely, when the touch pick-up at terminal B is activated, the output of the associated NOR gate will transition low, illuminating LED2 and turning off LED1. This behavior is critical in applications where distinct visual feedback is necessary based on user interaction.
The anti-bounce feature is essential for reliable operation, as it mitigates the effects of noise and signal fluctuations that can occur when a mechanical switch is engaged. The circuit's design may include capacitive or resistive elements to filter out the rapid toggling of the output that can occur during the initial contact phase of the touch pick-up.
In summary, this circuit effectively employs a 4001 quad NOR gate to create a simple yet effective touch-sensitive LED control system, ensuring that only one LED is illuminated based on the last touch input while maintaining stability through anti-bounce techniques.Only one LED can be on when the circuit is at rest. Which LED is illuminated is determined by the touch pick-up that last had human contact. Pickup terminal A controls the on condition of LEDl, and terminal B controls the on condition of LED2. A 4001 quad two-input NOR gate is connected in an anti-bounce latching circuit that is activated by touching a pickup. 🔗 External reference
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