Lerneaen Hydra's Lair

Here’s a simple half-bridge driver based on the LM5106 half-bridge driver with charge pump and programmable dead time coupled with a FDS6986AS dual N mosfet . It’s pretty much the sample circuit in the datasheet with an added jumper to select the charge pump source. The current setup allows for driving loads at 30V up [...]

I’ve often found that I need a basic audio amplifier for smaller projects so I decided once and for all to make a basic low-cost audio amplifier that can be used in a whole range of applications. After some searching I managed to find a surprisingly good monolithic amplifier, the TDA7057AQ. It’s good features are [...]

One aspect common to most available consumer ‘MP3 Players’ is that they, while very thin and easy to fit in a pocket, use a non replacable Li-Ion battery. Additionally usually they’re only rechargable via USB! The previous music player I had used AA batteries and it was very nice to be able to swap them [...]

I’ve recently got a boombox in exchange for development of a Li-Ion charger (the same charger is inside the boombox).
The charger is a very simple one based on the L200 linear regulator and an Atmel Mega168 microcontroller. The L200 is configured to charge with a constant current/constant voltage scheme limited to 2A and 16.75V, the [...]

So, I’ve transferred the website to wordpress and to a new host (ie. no longer from the basement). Let’s see how things turn out. All data will be transferred to this new site relatively soon.
Update: All data worth transferring should now be transferred. W00t!