tams elektronik B-4 User Manual page 9

Booster B-4
Using the ABC-braking method
The booster amplifies the track signal completely symmetrically. This
allows the ABC-braking method to be used in DCC-controlled layouts.
The DCC-input of the booster B-4 is isolated through an opto-coupler.
Balanced track voltage
The booster B-4 provides a regulated track voltage, which can be set to
a value between 10 and 24 V in 1 V-steps. At delivery the track voltage
is set to 18 V.
Regulating the track voltage to a constant value prevents changes in
locomotive speeds and lighting brightness, resulting from voltage
variations.
Rated size
Z
N and TT
H0
0, I and II
Short-circuit protection
The Booster B-4 provides an intergrated short circuit breaking in shape
of an integrated current limitation. This causes the booster to switch off
automatically when a short circuit occurs at the track output and thus
prevents damages to the booster, the tracks and the vehicles.
When the short circuit feedback line is connected to the booster port of
the control unit, the B-4 sends a feedback to the DCC control unit when
a short circuit occurs and then the control unit switches off the booster.
The short circuit sensitivity or the interrupting current, can be set to 2,
3, 4 or 5 A. In order to prevent damage effectively when a short circuit
occurs, the short circuit sensitivity should not be set too high.
Recommended track
voltage
12 V
14 V
18 V
20 - 24 V
Value in state of delivery
18 V
English
Page 9