therooster
New Member
Can someone point me in the right direction to building an adjustable current source.
I need 4-20 ma but can use anything that covers that range. Say 0-20ma or even 0-100 ma.
I would also like to be able to use a switch to cover say 0-10 volts. Im thinking I can just switch in a resistor into the circuit to do this.
I know there are specialized chips to this but I would like to use common materials such as voltage regulators or something else inexpensive.
I need 4-20 ma but can use anything that covers that range. Say 0-20ma or even 0-100 ma.
I would also like to be able to use a switch to cover say 0-10 volts. Im thinking I can just switch in a resistor into the circuit to do this.
I know there are specialized chips to this but I would like to use common materials such as voltage regulators or something else inexpensive.