I'm currently researching building my own adjustable linear power supply, and I'd like to build in two analog gauges that show the voltage and the current being drawn from the supply.
It would have to be a high-impedance voltmeter, of course, to minimize loading. Not entirely sure how to implement an ammeter. The entire project will probably output 0 - +12V, and also have a separate -12V rail (both adjustable). I would probably implement manual switches on the gauges to switch between measuring different rails, as automatic switching/ranging is a project in itself.
Wondering if anyone had any experience with analog gauges and how to implement them.
It would have to be a high-impedance voltmeter, of course, to minimize loading. Not entirely sure how to implement an ammeter. The entire project will probably output 0 - +12V, and also have a separate -12V rail (both adjustable). I would probably implement manual switches on the gauges to switch between measuring different rails, as automatic switching/ranging is a project in itself.
Wondering if anyone had any experience with analog gauges and how to implement them.