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Home Brew Power Storage Device:

Information and modifications based on the original documentation  and advice from Massoth.

Capacitors:
The capacity should not be higher than 2200µF, otherwise charging takes too long.
In place of one large capacitor, could also use several smaller capacitors in parallel.
On a normal garden railway using (20..24V) the voltage of the capacitor should be at least rated for 35 V.

Charging resistor:
It should be min. 2 Watt 150 Ohm, to limit the charging current.
Most central stations have problems with programming when the current is to high.
If you install several of these 
 power storage device some central stations will not start because of the starting current.

Discharging Diode 1N5407:
It ensures for a fast and good current supply to the decoder, for when the track input is interrupted.

To allow for correct programming, either incorporate an external switch, or accessible access to disconnect the power storage device.

The 
power storage device should be connected only to the internal decoder voltage.

For a  Home Brew power storage device*, ensure the RED + goes to Decoder + and likewise the Black – goes to Decoder -.

*Note: As well as using the Decoder + and Decoder -, on LGB 55029 and LGB 55028 decoders, the connections can also be made via the Positive and Negative on the SUSI BUS interface. 

Refer to this Blog posting, LGB 55429 Power Storage Device

Observe the correct polarity for the  capacitor.  Don't swap + and -.  Danger of explosion!





Variations of the single capacitor Power Storage Device, using Super Caps.












Testing the LGB 55029 with the single capacitor Home Brew Power Storage device, connected via the decoder positive +UB and the decoder negative GND  connections. 


Testing the LGB 55029 with the single capacitor Home Brew Power Storage device, connected via the SUSI positive and the SUSI negative connections. 


Testing the LGB 55028 with the single capacitor Home Brew Power Storage device, connected via the decoder positive +UB and the decoder negative GND  connections. 


Testing the LGB 55028 with the single capacitor Home Brew Power Storage device, connected via the SUSI positive and the SUSI negative connections.


Testing the LGB 55028 with the Super capacitor Home Brew Power Storage device, connected via the decoder positive +UB and the decoder negative GND  connections. 


Testing the LGB 55028 with the Super capacitor Home Brew Power Storage device, connected via the SUSI positive and the SUSI negative connections.