Support/hardware demonstration

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System

The following system is used to show digital electronic parts to students.

hardware demonstration system

The block diagram is:

block diagram


The FPGA design can be found in the HEI SVN.

Specification

To generate the PWM signal we have to compare the sinewave signal (tone) and a signal sawtooth signal whitch be generate with the counter.

The block diagram is:

pwm modulator

With the block which has in entry (in put: PWM_out) and (output: C0, C1) we are going to get back the whole signal PWM_out.

The output C0=1 when PWM_out=0 and the output C1=1 when PWM_out=1.

The test block is defined below:

Test
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