uRelay.zip
author: tubs
2 layer board of 1.05 x 0.74 inches (26.6 x 18.7 mm)
Uploaded:
April 21, 2017
Shared:
April 21, 2017
Total Price:
$3.80
Micro Relay Board
I designed this to use a small signal relay () with a small package to use in many of my projects that need a relay without a log of space available. The silkscreen for the relay contacts are reversed and haven t had the motivation to update it as I am probably going to be the only person using it, but just in case I wanted any else to be aware of that. The board uses a sot-23 diode as a flyback diode across the relay coil, and it is input signal is active high which drives a transistor to pull the relay to ground. So the signal input does not directly drive the relay because that might pull more current than a microcontroller can provide from a single pin. The two pin header is there to easily check that the relay functions them out. Design is about as small as I could make so the fab costs are pretty low.
Micro Relay Board
I designed this to use a small signal relay () with a small package to use in many of my projects that need a relay without a log of space available. The silkscreen for the relay contacts are reversed and haven t had the motivation to update it as I am probably going to be the only person using it, but just in case I wanted any else to be aware of that. The board uses a sot-23 diode as a flyback diode across the relay coil, and it is input signal is active high which drives a transistor to pull the relay to ground. So the signal input does not directly drive the relay because that might pull more current than a microcontroller can provide from a single pin. The two pin header is there to easily check that the relay functions them out. Design is about as small as I could make so the fab costs are pretty low.