Circuit Simulator - 555 Missing Pulse Detector
Why should I learn to use the circuit simulator to design 555 Missing Pulse Detector circuits?
Learn how to use circuit simulator software to design your own 555 Missing Pulse Detector circuits.
Where can I get a 555 Missing Pulse Detector circuit diagram with an explanation?
IndiaBIX provides numerous 555 Missing Pulse Detector circuit diagrams with detailed explanations and working principles.
How do I design a 555 Missing Pulse Detector circuit with this circuit simulator?
You can easily design 555 Missing Pulse Detector circuit diagrams by practising with the given circuit simulator. With this online circuit simulator, you can design and simulate your own electronic circuits.
555 Missing Pulse Detector
Circuit Description:
This circuit uses a 555 timer chip to detect a missing pulse. The input is a square wave. When you click the logic input (the "L") to bring it high, then the input will stop oscillating and stay high. The 555 will detect this and bring the output low.
The 555 is wired as a monostable. But whenever the input goes low, it turns on a transistor which quickly drains the capacitor. When the input goes high, the capacitor recharges, but doesn't quite make it to the threshold voltage before the input goes low again. If the input stays high, then the capacitor is allowed to charge fully, and the 555 timing interval ends, bringing the output low.
The 555 is wired as a monostable. But whenever the input goes low, it turns on a transistor which quickly drains the capacitor. When the input goes high, the capacitor recharges, but doesn't quite make it to the threshold voltage before the input goes low again. If the input stays high, then the capacitor is allowed to charge fully, and the 555 timing interval ends, bringing the output low.
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