PatchPierre

Module A-188-1 is a so-called Bucket Brigade Device module. A BBD circuit can be regarded as a chain of Sample&Hold units (S&H) wh...

" A Logic Gate is an idealized or physical device implementing a Boolean function. It performs a logical operation on one or more log...

In the A-112 VC Sampler /Wavetable Oscillator  and some other devices rechargeable batteries (accumulators) are used for memory backup of pr...

Special announcement from Dieter Doepfer, in the Doepfer Yahoo Usergroup : Updated Feb. 13, 2012, see below... " I just wanted ...

It took me a while to get through this book, but here is finally my long promised book review. "Onder Stroom" ( the book is in Du...

And again, i have been too busy lately with replacing some red LEDs by blue ones. I believe this was my final batch, but you'll never kn...

The A-103 18 dB Low Pass filter (VCF6) is Doepfer's own 'TB-303 filter clone' ; It uses a so-called transistor ladder with a...