Board-dat/OPM/OPM1047-dat/OPM1047-dat.md
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+# OPM1047-dat
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+refer to page - [[relay-modules-dat]]
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+## Boards
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+- [[OPM1046-dat]] - [[OPM1047-dat]] - [[OPM1048-dat]] - [[OPM1049-dat]]
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Tech-dat/acturator-dat/relay-dat/relay-dat.md
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-# relay dat
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+# relay-dat
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- legacy wiki page - https://w.electrodragon.com/w/Category:Relay
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## relay control schematic
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+- isolation by [[Optical-Coupler-DAT]]
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+- sell modules - [[relay-modules-dat]] using PNP transitor drive relay - [[transistor-dat]]
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+
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## using N-mos mosfet control
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![](2024-09-18-17-41-35.png)
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## using NPN transistor drive
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![](2024-10-01-19-16-11.png)
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- [[transistor-dat]]
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### fly back diode
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A flyback diode (also known as a freewheeling diode or reverse protection diode) is used to protect a relay or other inductive loads. When the relay coil is de-energized, it generates a high voltage reverse current (called back EMF) due to its inductive nature. This reverse current can damage other components in the control circuit.
board-series-dat/relay-modules-dat/relay-modules-dat.md
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# relay-modules-dat
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-legacy wiki page
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-- https://w.electrodragon.com/w/Category:Relay
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+[legacy wiki page](https://w.electrodragon.com/w/Category:Relay)
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## Boards
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![](2023-11-06-17-23-07.png)
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## supported RF module
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- https://www.electrodragon.com/product/rf-switch-receiver-433315mhz-wdecoder/