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| Digital to analog converter is just the opposite of ADC. DAC accepts binary value and converts to analog output. This makes use of suitable Microcontroller for performing this task. The duty cycle of a pulse train generated by the controller decides the analog output voltage when followed by a charging discharging hardware. This hardware does not use any conventional DAC. PWM is one other way to design DAC. This controller has the ability to change the duty cycle by appropriately setting the 8 bit data, hence it controls the DAC output. It is possible to set the output voltage in the range of 0 to 5 V DC in this experimental module. An external power supply 5V DC @250mA is required or +5V DC power supply Model SP5 is recommended. |
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