hi, new here, i study in physic but i feel i know nothing of practical electronics.
I have been reading electronics for some time now and i can't find a solution to my problem.
i want to create a steady (almost) current source that have a limit in voltage below 20V that can give up to 20 amp. the voltage limit should be very fast responding as i don't want voltage pick (never) for security reason (don't want to get killed because my supply can instantaneously supply kV because it is a constant current source.
The current should be made variable with a simple analogical Potentiometer.
I found lot of drawing of constant current source but they all have very dissipating solution where you dissipate everything except what you want. It would be much better if the power dissipated is low and the source adjust itself so most of the power that enter in it get use for productive work.
The said productive work would be electrolysis etching of metal plate and other electrolysis.
The source should also behave smoothly in the 0 Ohm load limit by keeping the max current limit running or by turning off fast enough so nothing is broken/ killed
thx everyone!
I have been reading electronics for some time now and i can't find a solution to my problem.
i want to create a steady (almost) current source that have a limit in voltage below 20V that can give up to 20 amp. the voltage limit should be very fast responding as i don't want voltage pick (never) for security reason (don't want to get killed because my supply can instantaneously supply kV because it is a constant current source.
The current should be made variable with a simple analogical Potentiometer.
I found lot of drawing of constant current source but they all have very dissipating solution where you dissipate everything except what you want. It would be much better if the power dissipated is low and the source adjust itself so most of the power that enter in it get use for productive work.
The said productive work would be electrolysis etching of metal plate and other electrolysis.
The source should also behave smoothly in the 0 Ohm load limit by keeping the max current limit running or by turning off fast enough so nothing is broken/ killed
thx everyone!