märklin #60955 MAXI high efficiency decoder

This is a result of my study for #60955 MAXI high efficiency decoder.

It brings very good running characteristic for MAXI or small locos with old digital 1 decoder.

The problem is the dimension of the circuit larger each in length, width and hight.

In addition the Lr/Lf outputs character is also differ from 'normal' MAXI Delta decoder.

Pin assign of 8 pins connecter(#1-#8) :

1. Lr(Light rear)
2. Rail
3. Motor
4. +U(about +20V)
5. +U(about +20V)
6. Motor
7. Rail
8. Lf(Light front)

Opposite side of above fig.

Pin assign of 7pins connecter(a-g) :

1. f1 (Switched for gnd)
2. f2 (Switched for gnd)
3. +U(about +20V)
4. electronic circuit ground
5. +U(about +20V)
6. NC(f3?)
7. NC(f4?)

Note: Pin d exists for extra power supply such as 3rd party's sound effects etc., but marklin does not 'warrant' doing it. Please refer marklin's decoder information at marklin USA web page.

Relationship of 'direction arrow' on 6021 CU and pin outputs.

All voltages are measured between internal ground.

Copyright © 2001 by Jun Maeda / KOBE JAPAN