Electronics 12V relay with dual NC NO switches module with high or low trigger

Summary

This video explains the operation and features of a 12V relay module, providing a hands-on demonstration. The presenter shows how the relay works, detailing its connection to both a 12V power supply and a 5V input for triggering the relay's behavior. The relay can control both low and high signals, with different configurations for the normally open and normally closed states. The video also covers current usage, including how much power the module consumes and how to safely use it for controlling higher-voltage circuits. Ultimately, the video emphasizes the convenience and affordability of using pre-assembled relay modules.

Takeaways

• 😀 The relay module is powered by a 12V DC power supply, with 5V used to power the LEDs.
• 😀 The module can control high-voltage circuits, supporting up to 250V at 10 amps or 150V at 15 amps.
• 😀 The relay features two switch types: Normally Closed (NC) and Normally Open (NO).
• 😀 A jumper configuration determines whether the relay is triggered by a high or low signal.
• 😀 When idle, the relay uses about 5 milliamps, but when activated, it uses around 40 milliamps.
• 😀 The module allows for safe control of high voltages, as long as the user understands how to handle them properly.
• 😀 The relay’s purpose is to switch high power with a low-power signal, making it ideal for automation tasks.
• 😀 The module is easy to use and cost-effective, as it’s priced similarly to standalone relays but with added functionality.
• 😀 The relay’s current consumption can be monitored with a multimeter, providing insights into the overall power draw.
• 😀 The module's low power consumption and simple wiring make it an ideal solution for many DIY projects.
• 😀 Using the relay module, you can control high-power devices safely without the need for complex wiring or expensive components.

Q & A

What voltage does the relay module operate on?

The relay module operates on 12V DC, which is supplied by the bench power supply in the video.

What is the maximum current and voltage that the relay can handle?

The relay can handle up to 250V at 10A or 150V at 15A, depending on the application.

How is the relay module powered?

The relay module is powered using a 12V input for the relay coil and 5V for the LEDs, which is provided by separate power supplies.

What is the significance of the jumper setting on the relay module?

The jumper setting determines whether the relay is triggered by a high signal or a low signal. Moving the jumper changes the trigger behavior.

What happens when the relay module receives a high signal?

When a high signal (12V) is sent to the input, the relay module switches, and the LEDs indicate the change in state.

What current does the module use when it's in the 'off' state?

When the relay is in the 'off' state, it uses about 5 milliamps of current for powering the module and LEDs.

How much current does the module draw when it's activated?

When the relay is activated, the module draws approximately 40 milliamps of current, which powers the relay and associated components.

Can the relay module handle high-voltage AC circuits?

Yes, the relay can handle up to 125V AC at 15A, but it's essential to use proper safety measures when working with high-voltage AC circuits.

Why is it recommended to buy the relay module instead of just the relay itself?

The relay module is cost-effective and includes necessary components like resistors and protection features, making it easier to use than just the relay itself.

What is the purpose of the normally open and normally closed switches on the relay?

The normally open switch is off until triggered, while the normally closed switch is on until triggered. These allow different circuit behaviors based on the relay's state.