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The Power I/O WildcardTMRead switch closures and directly control high current DC devices with this versatile Wildcard.![]()
Do you need to interface high-voltage peripherals to your instrument? This heavy-duty board provides eight high-current outputs and four high-voltage digital inputs. Inputs and outputs are optically isolated to ±2500 volts. This versatile Wildcard makes it a snap to interface high voltage peripherals to your instrumentation or automation project. This tiny 2" by 2.5" board is a member of the Wildcard series that connects to any of Mosaic's controllers via a Wildcard Carrier Board. High Current OutputsThe current sinking outputs are intended to actuate high-current devices such as motors, relays, heaters and solenoids. They can each sink 2 A continuously and up to 10 A intermittently while withstanding field voltages of 50 volts, and they are snub-diode protected against kickback from inductive loads. Owing to the low ON resistance of the MOSFETs, the power dissipated in them is low: when OFF they are subjected to the field voltage but there is no current so no power is dissipated; when ON their internal resistance is low (typically 0.15 Ohm) so the I2R power is also low. The MOSFET outputs control DC loads only; to control AC loads, use the AC Relay Wildcard, also available from Mosaic Industries. High Voltage InputsThe opto-isolated inputs sense switch closures and/or bipolar voltages to ± 50 volts. When the input voltage is ± 5 to ± 50V, a logical one input is read. When the input voltage is less than ± 0.8V, a logical zero input is read. The high voltage inputs are also optically isolated to ± 2500 volts. Onboard pull-up resistors enable monitoring of contact closure devices such as switches. Pre-coded SoftwarePrecoded device drivers provide high-level functions for turning on, turning off, and toggling the output lines, for reading back the state of the outputs, and for reading the inputs. Stepper Motor ControlFor detailed description of stepper motor control visit the page Controlling Stepper Motor Using the Power I/O Wildcard, or download the same page in pdf format: Application Note MI-AN-072, pdf file (249KB) Specifications
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