Making the Impossible Possible with RIBs® in Niche Applications

Today’s Tech: Making the Impossible Possible with RIBs® in Niche Applications

The thing I like most about handling Tech Support calls is hearing a customer say, "You probably don't have a solution for my application because I can't find anyone who does," and then actually having a solution for them. I can always visualize their contorted, yet enthusiastic facial response as they say, "Really?!" Chances are you have been in a tight spot at one time or another and a RIB® has gotten you out of it.

Problem: You have a device that outputs a 6Vdc pulse to turn a load on and a 3Vdc pulse to turn a load off using a maintained relay contact.

Solution: RIB it.

How do you go about that?

That is a pretty uncommon application, yet here at RIB® we received a call for just that. We pride ourselves on solving peoples' problems. Given the fact that there is a pulse instead of a constant voltage, my first thought was a latching relay.

Does anyone make a dual-voltage latching relay with 3V on one side and 6V on the other?

We do not, and I cannot think of anyone that does.

So what is an electrician to do when faced with this scenario?

I recommended the RIBMN24Q2C (2-stage staging relay) to control an RIBL24SB (mechanically-latching relay). I sent the customer a drawing to give him an idea of how it would work. When the RIBMN24Q2C has a voltage between 2.745V and 4.627V (3V in this application), Relay 1's contact closes which effectively applies 24V to the Unlatch coil of the RIBL24SB.

Likewise, when the RIBMN24Q2C has a voltage between 5.255V and 7.137V (6V in this application), Relay 2's contact closes which effectively applies 24V to the Latch coil of the RIBL24SB. I could have recommended the RIBL24B, but when an override switch is available, why not take it?

About the Author

David Mackey is an Engineer for Functional Devices. He is a husband of one, a father of three, and a servant of Christ Jesus. David graduated from Purdue University with an Electrical Engineering Technology degree.

He enjoys working with his hands on things like woodworking, cars and, of course, electronics. He is 5' 13" and wears glasses, unless he wears contacts. He is also a self-made hundredaire.