via the Digitana GalleryRemember to click on the Digitana label below for more.
EVERYTHING SYNTH
Click here for more shots of Erik Norlander's studio over the years.

"The HMVCO1d is a 0.7" pitch DIL module providing a temperature compensated accurate exponential voltage controlled oscillator (VCO) intended for audio and synthesizer applications. The design is adapted from a VCO design by Terry Mikulik published originally in the 'Electronotes' series http://electronotes.netfirms.com/
You'll find more details on Hearn Morley's DIY website including the HMADSR1c ADSR Envelope and the synthesizer pictured here. You might recoginize this synth from the SDIY UK synth gatherings.