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HSR Autofader Update (Part 2)

Additional circuitry to make last month's project 'fade in'. Plus, veroboardlayouts that you can actually see! All will be revealed...

Further to our publication of the Autofader circuit last month, we have had a few queries asking if the circuit could be adapted to produce fade-ins. To this end, the circuit in Figure 1 describes a modification that should enable both fade-ins and fade-outs to be produced with totally independent fade times.

Figure 1. Autofader circuit modification.

To ensure that the capacitor C5 is in the correct state of charge, the fade switch should be set to the appropriate position and then the reset button depressed for a couple of seconds.

There should be plenty of room in the original metal case for the additional components and the extra reset switch required may be a biased toggle type or a momentary pushbutton.

Series - "Autofader Project"

This is the last part in this series. The first article in this series is:

All parts in this series:

Part 1 | Part 2 (Viewing)

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Home Studio Recordist

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Echoes From The Observatory

Home & Studio Recording - Copyright: Music Maker Publications (UK), Future Publishing.


Home & Studio Recording - Dec 1984

Donated & scanned by: Mike Gorman


Electronics / Build


Autofader Project

Part 1 | Part 2 (Viewing)

Feature by Paul White

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