EFM 3534 Noise & S/H
This is the 3537 noise and sample and hold module from Tom Gambles 3500er module series. It provides pink and white colored noise and a sample and hold circuit.
For my modules i wired it with switching sockets. Both noise source outputs are nirmalled to an internal mixer. The mixer provides an additional input with attenuator for external voltage sources. The sum is sent to the sample and hold circuitry.
The sample and hold needs a short trigger pulse, not a gate signal as mentioned in the original EFM documentation. I just added a 10n cap in series with the clock input and it works fine even with gates now...
STATUS: built
last update 11 JAN 2012
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