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Circuit Gallery
The basic components of AND, OR, XOR, Flip-Flip and Nodes can be used to build more complex circuits. Here are a few circuits which I have found to be particularly useful.
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NOT-Node Oscillator: One of the simplest concepts, it generates a continuously oscillating signal of 10101010...
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OR-Delay: OR gates can be strung together to delay a signal if needed. The more OR gates you use, the longer the delay. Only one input on each OR gate is needed. You can also use XOR gates, or NOT gates assuming you use an even number of them.
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Rising Edge Detect: This is used to convert a long signal into a short signal. The Node splits the input signal to the AND gate and the NOT gate. For one instant both inputs of the AND gate are high, and the AND gate sends a pulse. In the next instant the NOT gate turns off, and the AND gate is shut down. It remains this way until the input signal turns off, and then the first input to the AND gate goes low, and then the next instant the second input from the NOT gate goes low.
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Edge Detect: This sends out a single pulse whenever the input signal to the Node changes high or low.
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Single Pulse Input Flip-Flop: The output of this circuit toggles each time a single pulse enters the free input on the XOR gate. If a the input signal is longer than a single pulse, the output oscillates.
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Pulse Extender: This takes a single pulse and extends it. The input pulse goes into the Node, and the extended signal comes out the left output of the Flip-Flop. The length of the extended signal depends on the number of OR gates you place within the delay.
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