On Wed, 16 Sep 2020 18:24:53 +0100, John Bryan
wrote:

snip


I did not choose a linear power supply for any particular reason but as I
said the current limiting was more important for re-charging Ni-Cad
batteries in a couple of tools I have.

OOI, don't most bench chargers have adjustable current limit?

Their chargers having died a few
years ago.

Like they do. ;-(

Both voltage and current setting are achieved using an encoder. When you
press the knob in the range digit flashes and whilst it remains in that
mode turning the knob adjusts the displayed value up or down.

Understood.

Say you repeatedly pressed to set the 10mV range you can adjust the
voltage up or down throughout the output range 0 to 30 volts. It does take
quite a few revolutions to get the output up to 30volts from zero though.

Ah, that's interesting and thanks for the clarification.

So if you set it on the units field you could wind it down from say 12
to 5 volts just by turning the knob (eg, it wouldn't just go from 12
to 10 and up to 19 and back down etc)?

If that was the case and based on the fact that most people would set
the volts in 'whole unit' increments, that would make it much more
useable IMHO).

Similar thing could happen with the current limit in that you could
have it on the .1 range and still have reasonable speed and
granularity?

Do you have to leave it to 'time out' on the individual digit for the
above to happen (eg, to stop it just cycling round that field or does
it never do that)?

Cheers, T i m