I haven't taken it beyond the prototype stage yet.
Like many of my projects I get side-tracked into something else. I believe the general approach is sound and the software a good start, just the modulator and output stage need some work to build a practical beacon with it.
I have an idea for a rather elegant modulator based on a trifilar transformer and a pair of MOSFETs (perhaps even just the sink FET in the microcontrolller). The final amplifier would be drain/collector modulated with amplitude control from the PWM envelope output of the microcontroller. Gotta try that soon, should make it a very simple circuit.
26th August 2009 21:31
Alan Yates wrote...
Henrique,
I haven't taken it beyond the prototype stage yet.
Like many of my projects I get side-tracked into something else. I believe the general approach is sound and the software a good start, just the modulator and output stage need some work to build a practical beacon with it.
I have an idea for a rather elegant modulator based on a trifilar transformer and a pair of MOSFETs (perhaps even just the sink FET in the microcontrolller). The final amplifier would be drain/collector modulated with amplitude control from the PWM envelope output of the microcontroller. Gotta try that soon, should make it a very simple circuit.
Regards,
Alan