For testing a prototype a require a simple circuit board designed and made.
I require:
a board that can be powered by 9v to 25v.
that it creates an oscillating current.
Has a knob/button/switches on that can adjust number of oscillations / frequency from between 1Hz to 150KHz.
Ideally the board will have two wires that the power is connected to and two that the oscillating current is created to.
On / Off switch
Preferably in some kind of generic case/box.
Any questions, please use PCB.
Ben