In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Beau Schwabe wrote:

PeterM,

Yes, you are reading the schematic correctly.  The "first" diode from Vsupply in conjunction with the
1000uF cap creates a typical Diode-Capacitor buffer.  The "third" diode (Output of the regulator)
forms a second Diode-Capacitor buffer with the 10uF.  The "second" diode (Regulator Ground) is a
bias diode as you mention to the "third" diode.  The 100uF simply provides more stability between
the main regulator output and ground.

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