Sunday 17 February 2019

Your toilet won't flush? How jolly inconvenient!

Modern, low-level cisterns don't last like the old, high-level, chain pull bogs use to.

One of the most common complaints is when they become difficult or impossible to flush.

This could be the reason why...

Monday 4 February 2019

Electret Microphone Preamplifier

This design runs from a 5Volt USB supply and attempts to minimise electrical noise.

I wanted to create a simple preamp for an electret mic insert using components from my bits box.

So component values and transistor types are not critical.