On Fri, Oct 4, 2024 at 08:40 AM, karst.drenth wrote:
Neither Z21 nor DR5033 allows for Common Ground !!?
Both use HBridges.
Karst,
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Can you elaborate on this statement? All of the "classic" boosters I'm familiar with in North America use "H-Bridges", including the ones that I've helped design (CS-105, B-106, and LT-50), as well as popular boosters from CVP Products, Digitrax, some Lenz, and NCE. All of these boosters have the ability to connect up a booster "common", which is not "ground". They all have provisions to connect the "return" side of their internal power supplies to a booster "common".
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In the situation where the booster does not expose the "return" side of its internal power supplies to a terminal, you can still create a booster "common" by tying one phase of the track output from each booster together, similar to classic "common rail" wiring. Lenz even recommended this in their product literature, at least at one time.
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More information about booster commons can be found here:
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I'm struggling to understand what about having an "H-Bridge" you think prevents the ability to support a booster common. ...or have I misinterpreted your statements?
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Thanks,
Stuart
