21/12/25 First GROTA now GRATA

Rob ZL4ROB decided to give his fan dipole a bit of TLC. So what better place to lay it out, than a footpath? Given the footpath in question is hardly a major pedestrian highway and the surrounding foliage afforded cover from the direct sun, it wasn’t a bad choice of… [Read More]

21/12/25 Buck, Boost or Both?

There’s no question that “switching” converter technology has revolutionised the way we construct and use power supplies. From cost and weight saving compared to low frequency transformer designs, to efficiency and performance in voltage or current regulation, the switching regulator is almost the holy grail in power supplies. Apart from… [Read More]