OD

Open Drain FET's

Open Drain Block Diagram

Open Drain FET's are used to drive relays. The low side of the relay coil is typically connected to the drain (Kx) and the high side of the coil to a power supply voltage (50V max).
8 relay drivers. Drains pulled low when on, and float when off.
Suggested signal relays include Coto 9012 SPST and 9092 DPST
Generic N-channel FET handles 1A and 50V

GUI (Graphical User Interface)

All FET's default to off condition (float) on power-up
Checking the box will turn the FET on.
Note that the drain must have a pullup, like a resistor or the relay coil, in order to go high.
The drain may be pulled up as high as 50V. It should not go negative, since that would forward bias the internal drain-to-source diode.

API (Application Programming Interface)

C API:

void Set_OD(int open_drain);

int Get_OD7(void);

Python API:

set_od(open_drain)

get_od7()

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