This circuit from an old documentation includes the power supply for the 117 V power grid. It can be adapted to other networks by changing the 10k resistors.
April 2017 - The Shields of Seed Grove Modules for Intel Joule can now be obtained from Mouser...
The SCR sector of this circuit can be powered by high voltage AC and instead of the LEDs we can...
The gain of the Operational Amplifier in the figure is given by the ratio between R1 and R2. In...