Tuesday, 28 November 2017

Lowe Rider

I took a punt on a Lowe SRX-30 short wave receiver that was listed as not working. Well it needs a little clean, but it does work. With four levels of tuning control it certainly drives a little slower...

Thursday, 9 November 2017

This Could Be The Start Of A Beautiful Relationship

I found this Variera cutlery box in Ikea and realised it was damn close to fitting 5U panels, so I bought one. It has a sloping profile so you can recess the panels to get an exact fit. The width is just over 7U so it should make a little satellite case with the minimum of fuss. If it works this will be case number 23 - watch this space...

Saturday, 4 November 2017

Chua Chups

Buoyed by the success of the Accutronics reverb I decided to revisit one of my earliest DIY experiments.  This is a Chua oscillator that I started playing with back in April 1999. I rebuilt the original circuit substituting a TL072 for the two LM741s, then added some voltage control elements from a second version I started in 2000/2001. I'm quite happy with this version, so it's finally going to get a panel...

Tuesday, 31 October 2017

Saturday, 28 October 2017

Acc Your Ankle (Part Two)

It lives !
There seems to be a minor phase issue at some settings, and I need to decide whether to add the filters and mono switch.

And I'm tempted to see if I can get any more reverb time...

At the moment it's on soak test

Friday, 27 October 2017

It's Black Cat Day...

...doesn't time fly..?

Sunday, 22 October 2017

Acc Your Ankle (Part One)

I set myself the task of building a stereo reverb from the Accutronics BTDR-3H. There are a lot of mods out there to play with the stereoness and add things like EQ. The base circuit is pretty simple and I'm just waiting on some proto board...