Electronics

Current (and/or unfinished) projects:

• Fast edge generator/oscillator based entirely on W2AEW's TDR pulse generator circuit.
• Designing, driving and building 17 W LED lamps

Finished projects:

• Repairing an HP 53131A counter.
• A JTAG level shifter for 5V targets
• An improved vimclutch
• Connecting analogue rudder pedals to USB
• Powering breadboard from USB, tidily
• Repairing a 350 W SMPS (PSU repaired, blog unfinished)
• Article to come: testing and aligning an OzQRP MST2 40 m transceiver

Misc tid bits:

• Passive bidirectional voltage level shifters and their effect on rise times.
• Documenting the bits in a common 8-digit 7-segment display
• Fixing a USB-Ethernet adapter to run at USB 3.0 speeds
• Dangerous Mains Polarity (especially on Chinese stuff)
• Breadboarding an SOT-89 SMD chip