Littfinski 080071, DigitalBooster (for 2.5 or 4.5 amps) from the digital professional series!

The DigitalBooster DB-4 is a short-circuit proof power amplifier (booster) for digital model railway systems. For a maximum digital current of 2.5 or 4.5 amps.

The DigitalBooster DB-4 can be used with many digital centers via the galvanically separated booster bus connections.

In the connection example it is connected to the Central Station 2 via the "Kabel Booster 1m" via the 5-pole booster bus and supplies its own, isolated track area with up to 2.5 or 4.5 amps of digital current.Properties of the DB-4

The DigitalBooster DB-4 amplifies the digital formats Märklin-Motorola, mfx ®, M4 and DCC.Via its galvanically separated booster bus connections, the DigitalBooster DB-4 can be used in conjunction with many digital control centers via the 5-pin booster bus, the CDE booster bus or the Roco booster bus:

The DigitalBooster DB-4 is not supplied from a classic model railway transformer, but from the switched-mode power supply DB4 PowerSupply, on which the stabilized digital track voltage of 15, 16, 18, 19, 20, 22 and 24 volts, suitable for all gauges , is adjustable. The 120VA switched-mode power supply DB-4-PowerSupply is suitable for operation on mains voltages from 110 to 240 VAC with a frequency of 50 and 60 Hertz.

Other special functions ensure smooth operation, not only with regard to model railway systems that are controlled via a PC using model railway software:

The "Short Report" jumper can be used to set the DigitalBooster DB-4 in such a way that it reports a short circuit to the digital center and thus switches off all boosters, or only switches off its own track area in which the short circuit has occurred.

The "Auto Go" jumper can be used to set the DigitalBooster DB-4 so that it continuously checks every 5 seconds whether there is still a short circuit. If the short circuit is eliminated, the DigitalBooster DB-4 automatically supplies its own track area again.

The maximum digital output current of the DigitalBooster DB-4 can be set to 2.5 or 4.5 amps via another jumper.

The DigitalBooster DB-4 offers the option of switching the voltage on the track on and off using external buttons around the system. This is particularly helpful because the way to the stop button on the digital center can be very long in critical situations.

If the model railway is controlled via a PC with model railway software, the digital voltage on the track can be switched on and off via the DigitalBooster DB-4 if desired using Märklin-Motorola or DCC commands.

Integrated WatchDog function: If this is activated via model railway software, the DB-4 also monitors the PC and the digital center. If the PC or the model railway software does not report a switching command to the DB-4 every 5 seconds, the PC or the digital center has crashed and the model railway software no longer has control over the model railway system. So that the trains do not continue to run uncontrolled, the DB-4 disconnects the tracks and all trains are stopped.

For the booster management of the model railway software, the DigitalBooster DB-4 offers a feedback output, via which the model railway software can find out whether voltage is currently being supplied to the tracks or whether the tracks in the booster area are currently dead.

The DigitalBooster DB-4 generates the RailCom® blanking interval in DCC operation if the jumper "RailCom" is inserted.

LDT components from the digital professional series can be operated on your digital system without any problems. You get a 24 month guarantee on the finished devices.

Every DigitalBooster DB-4 comes with a detailed instruction manual. The instructions can also be found in the next section for viewing.

The DigitalBooster DB-4 is available as a kit (-B) or as a tested finished device in a housing (-G). Suitable