Hi. I have a transmitter in MW band and the output tube operates with 1400vdc/160mA. (the transformer i am using is 230vac/1000vac). I am looking for an electronic circuit witch will be able to cut off the 230vac supply of the transmitter every time the antenna is falls to the ground (the result of an antenna witch have short-circuit with the ground is to be increased the tube's anode current) or other overload faults. i would like this circuit to drive an on/off relay 230 volt and to control the 230vac current of the transformer not the 1000vac current. for example if the current of the low (230vac) voltage is increased from 1A to 1.01A i would like the circuit i have described above to cut the power supply. i would like this current control to be adjustable.thank you very much.