[Data Dump] Memory Man Solid State Echo / Analog Delay Line (1976 Proto)

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Memory Man Solid State Echo / Analog Delay Line (1976 Proto)

Postby rafmax » Sun Aug 17, 2014 1:52 pm

CJ Landry from CJLectronics (TX , USA) had this on his workbench for "a few hours"
Problem: Noisy delay from the pedal. Prototype unit
Solution: Unit arrived very noisy. The design of this circuit does not include an
NE570 so the clock noise is very noticeable in the output. Added a cap across the
output op amp that drives the 1st stage BBD. This helped with stray noise. Replaced
the 2 prong AC cord with a 3 prong ground power cord. This stopped the radio
station from being heard in the output. Experimented with many different way to stop
the clock noise and no impact was made. This circuit design is noisy.

I should add that the footswitch has to be replaced now it collapsed in my won hands :shock:
Anyway, here are a few gut shots for this 1976 science project :mrgreen:
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