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Thread: Making an analog power supply digital...
BY : johncouture

In SX Microcontrollers, SX/B compiler and SX-Key Tool, johncouture wrote:

Interesting topic.

Couldn't you use a LM117/LM317  (Adjustable Regulator, 1.5A, 1.2V to 37V range) and a digital pot (DS1803)
With R1 at 1000 and R2 a 10K variable pot you could go from about 2.0 to 15V
LM317 calculator
Higher amps available as LM150, 3A and LM138, 5A
A couple of reference articles:

High Side Current-Sense Measurement: Circuits and Principles (MAXIM)

Making a shunt from 12ga wire

LM117 Datasheet

DS1803 Datasheet

... Or did I misunderstand the whole concept?

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