I'm a newbie in electronics and I want to drive a square loop antenna with very low (between 100 Hz and maybe 20 KHz) frequencies. I stuied much of BJT configurations (common collector etc.) and oscillator design (Colpitts, RC phase shifter etc.) but still I lack the skills to build a decent osc+amp+antenna circuit.
So I thought, for such low frequencies I could go for a simple speaker. Cut one of its wires (one that goes into the speaker coil) and solder a square antenna in between. Then plug into PC and with some software I could drive the antenna with sine or square waves of audio frequencies (up to 20 kHZ?).
Would this work? Do I need to care about the speakers "ohm" value? How could I calculate the peak-to-peak voltage and current through the antenna then?
Or is there any other method you would suggest?
Any help would be appreciated.
So I thought, for such low frequencies I could go for a simple speaker. Cut one of its wires (one that goes into the speaker coil) and solder a square antenna in between. Then plug into PC and with some software I could drive the antenna with sine or square waves of audio frequencies (up to 20 kHZ?).
Would this work? Do I need to care about the speakers "ohm" value? How could I calculate the peak-to-peak voltage and current through the antenna then?
Or is there any other method you would suggest?
Any help would be appreciated.