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An analog BBD echo gadget (bucket brigade device)

Here is the circuit of an analog delay device, so a simple echo device:

Circuit diagram of the analog echo device using the BBD circuit MN3207

Delay times of up to approx. 50mS can be set. For larger values, an MN3208 can be used instead of the MN3207. However, this one has a different housing and another pin assignment. Even longer delay times can be achieved by connecting several MN3208s in series.

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