27 lines
1.3 KiB
Markdown
27 lines
1.3 KiB
Markdown
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# New Relay Layout
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12VDC Power Supply
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Exhaust--------SSR-40DA-|-----------------NC 3V Relay--------GPIO
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Igniter--------SSR-40DA-|-----------------NO 3V Relay--------GPIO
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Auger----------SSR-40DA-|-----------------NO 3V Relay--------GPIO
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GND
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# Power Supply
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Flyback Diode (for DC coils)
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Purpose: Protects other components from the inductive voltage spike generated when the relay’s coil is de-energized. This voltage spike can damage transistors or other switching components.
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Type: A simple 1N4007 diode or similar can be used.
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Placement: Connect the diode across the relay coil, with the cathode (striped side) to the positive voltage and the anode to the negative end of the coil.
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Capacitor (for Noise Suppression)
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Purpose: A capacitor can be added across the relay contacts to reduce arcing and noise caused by contact bounce, which can help reduce wear.
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Type: Use a ceramic or film capacitor, typically around 0.1 µF, rated for the expected voltage.
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Placement: Place the capacitor across the relay’s switching contacts. For high-voltage AC circuits, ensure the capacitor is rated accordingly (e.g., X2 type for AC line).
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