At the last “formal” workshop for the year on 9 September 2018, held at ZL2XJ’s QTH, we were given tips on the construction of power supplies by three members (Don ZL2BL, Bernard ZL2BD, and George ZL2AG). This included:
- a foolproof (but weighty) bench power supply for valve circuits (short circuits no problem) using readily available transformers and valves (Don ZL2BL)
- two different kits for variable voltage bench power supplies, acquisition of low cost 13.8v switched mode power supplies, and tips on how to quieten down RF noise from these power supplies (Bernard ZL2BD)
- low cost 13.8v transformer-based power supplies built into older desktop computer cases (George ZL2AG).
Over the summer we will have informal workshops, where you are welcome to “bring along the soldering iron” to work on projects, whether that be a uBITx transceiver, a magnetic loop antenna, or a power supply or whathaveyou.