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An Analog Devices DAC08 DAC, which is floating along with the rest of the collector supply, | An Analog Devices DAC08 DAC, which is floating along with the rest of the collector supply, | ||
generates the programmable collector voltage. | generates the programmable collector voltage. | ||
The | The DAC value sent by the microprocessor passes through an octal optoisolator before being fed to the DAC. | ||
The collector supply is linear, basically a discrete power op-amp. | The collector supply is linear, basically a discrete power op-amp. | ||
The output stage is a Darlington configuration of three NPN transistors. | The output stage is a Darlington configuration of three NPN transistors. | ||