A signal braking module

Posted on Oct 26, 2012

M½´rklin`s signal braking module, number 72441, solves this problem by introducing a short transition track between ordinary and braking section, and additionally offers a emergency stop section with cut off power in case a loco does not brake in appropriate distance. Let me call this kind of braking module a `conventional brake module`. My suggested circuit does not need a transition track. This makes migration from existing analog layouts to digital operation easy, where simple stopping sections at signals already exist. These stopping sections are now used as braking section, and no extra transition track needs to be added.

The circuit works as follows: C1 stores the braking dc voltage. It is charged via D1 and R3. Other circuits omit R3, but I think it does not harm, and limits the power-on charge current. In the relay contact`s left position (as illustrated in the

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