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Power Supply

Power is supplied to the MCB2100 board by an external 6 - 9 Volt DC power supply which must be capable of providing up to 150mA of current.

The voltage regulators IC8, IC7, and IC3 generate 5 Volts, 3.3 Volts, and 2.8 Volts DC. The Power LED indicates when 3.3 VDC power is present on the board.

MCB2100 Board Power

This shows the center conductor as the positive (or plus) connection. Caution: Using a power supply with the wrong polarity will damage the board.

The connection uses a standard 5.5mm barrel plug with a 2.1mm inner diameter. The center conductor provides positive voltage.

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