Hi all,
I am currently working on a project that requires me to power a linear actuator using a relay (HN22005). I currently have the NI USB 6210. My idea was that i was going to use a digital output to power the relay. After some research i found that the current is limited on the digital outputs to a maximum of 50 mA for all 4 digital terminals. I require a 5V and about 106mA signal to drive the coil in the relay to turn on. I built a pnp transistor circuit to drive the coil and this was successful. However i would like a cleaner solution. After reading through the usb 6210's data sheet i found that i can use an external power supply connected to the +5V terminal in order to increase the maximum current for the digital pins.
My confusion is that i do not know how to properly hook up the external power supply in order to increase the maximum current. Is this idea even possible to supply the amount of current i require? and if it is not possible is there another device i can use that will be able to supply the +5V and 106mA i need to turn the relay on?
Thanks in advance for any help!
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