Husnen (Hus) Rupani:

Hi, I’m Hus. In my last video I shared with you an update of our Electromag Pracbox where we replaced the whole effect proxy with a solenoid, and that opens up a lot of opportunities for learner engagement with practical training. In this video, I want to share with you three of many circuits that you can connect with that combination. Let’s get started.

Before we start connecting our circuits, I’ll quickly go over our setup. Now we have a solenoid here instead of the whole effect proxy, and it’s designed or fixed in the place such that when the solenoid arm is extended, it goes over the inductive proxy, which will then get triggered, and then we’ll be able to do a couple of things from there.

Let’s look at our first basic circuit. In this circuit, as you can see, we have a 12 volt supply that will power our solenoid, and we have another 12 volt supply which will power our inductive proxy, which will then trigger the LED. Let’s connect this circuit first. Let’s turn on the inductive proxy. Nothing works at the moment, but as soon as I turn on this power supply, we can see that the solenoid is now extended, which then activates the inductive proxy, which then turns on the LED. That’s our first basic circuit.

Our next circuit is a very subtle change in that circuit. All we’re doing is we’re going to use a push button to turn on the solenoid. Let’s connect this circuit. Instead of the power supply going directly to the solenoid, we will make it go through a push button. And then when I turn on the power supply, now the solenoid doesn’t energize on its own, I have to trigger it with this push button. As you can see, it still works similar to the first circuit, but now we have a push button in place, which allows us to control it a little bit more.

The reason we did this is for our next circuit. In this circuit, as you can see, we’re powering the solenoid and the inductive proxy through the same power supply, which allows us to use the second power supply for something else, and that’s what we’re going to do in the more complicated circuit. But let’s now connect this circuit where both solenoid and inductive proxy are powered through the same power supply. I’ll turn off this power supply and I’ll take the terminals that are going to the inductive proxy and put it across our top power supply. Now we have one power supply powering the solenoid and the inductive proxy, and if I trigger the solenoid with this push button, you can see that the operation is still the same. It’s doing exactly the same thing.

Now, this is where we can make the circuit more complicated. Let’s look at our next circuit. As you can see in this circuit, we have a 12 volt supply push button going to the solenoid, which we already have connected, and that same 12 volt supply powering the inductive proxy. But instead of the LED, we’re now energizing a relay, and that relays contact is going to go from this power supply to the lamp. When the push button is pressed, the lamp will turn on. Let’s connect this circuit now. We already have our first part of the circuit connected, let’s connect the second part of the circuit. We will remove the LED from this circuit and power our relay through the proxy. Let’s test that. When I press the push button, the arm extends and the inductive proxy then energizes this relay.

Let’s now use our second power supply, set it to 24, go to the contact and through the contact to an incandescent lamp, and then back to the power supply. Now, if I turn on this power supply, nothing happens because the relay is still de-energized. Let’s now make the circuit work. If I press this push button, it energizes the solenoid, extends the arm, goes over the inductive proxy, which then energizes this relay, closes the contact, through this power supply this lamp then turns on. This is a slightly more complicated circuit than our first one, but still at the level of our students.

As you saw from those three circuits, we went from very basic to fairly complex but still at the level of our students. If you have any feedback on this video or any questions, please feel free to contact us. Thanks for watching.