Futaba ACT DPS SPLITTER 18 S.BUS
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Max jatkuva virta: 120A
Futaba ACT DPS SPLITTER 18 S.BUS
The DPS Splitter 18 S.BUS is designed for the high current supply of Futaba S.Bus receivers and S.Bus servos. The servos are usually connected to the relevant sockets (contact is pin) in the receiver. These supply the servos with current and with the position and control signal. A single plug-in input on the receiver is then responsible for connecting the battery or switch cable. If several servos are to work at the same time with a lot of power and / or high speed, this poses a problem for the power supply of the servos, because power and speed always go hand in hand with high power requirements.
This current requirement cannot be made sufficiently available for the battery via the individual plug-in connection on the receiver, creating a "bottleneck" for the necessary servo current. If necessary, the voltage drops, the servos become weaker or slower or both. In the worst case, they even stop and the recipient fails. Depending on the electricity requirement.
Principle battery switch
Battery switches are used to redundantly secure the power supply of a system by using a second battery. This results in "battery redundancy". Two batteries are used so that if one battery fails, the other maintains power to one system. In principle, this would be easy to solve by simply connecting a second battery to the system in parallel. Unfortunately, "Ohm's Law" gets in our way: Current always flows from a higher voltage to a lower voltage ... So from the battery with the higher voltage to the one with the lower voltage - always. Two batteries will never have the same voltage or load capacity. Thus, the current of the better battery does not flow to the system, but to the "worse or empty battery". This usually leads to the complete destruction of both batteries and to the model.
The ACT high-current battery splitter system therefore solves the following problems:
• The servos with high power requirements are connected to the battery splitter, no longer to the receiver.
• Due to the built-in battery switch, a splitter has two high-current connections for two receiver batteries, the voltage of which is then passed (via the built-in battery switch) directly and loss-free to the servo sockets on the splitter.
• The position and control signal for the servos is sent separately from the receiver to the individual plug connections. So that the receiver can work, it gets its voltage from the splitter via a single patch cable. (S.BUS signal, all in parallel)
• The control and position signal is sent separately to the plug connections of the splitter. Either via the S.BUS for Futaba receivers or via patch signal cables when using non-Futaba receivers.
• The operating current for servos and receivers is thus "split".
Why high current for servos, what happens if there is insufficient supply?
• For the large, dynamic, very short fluctuations in the current demand (current peaks) of today's servos, an unimpeded power supply to the servos is necessary, so not only high-current batteries must be used, but also plug connections and cables must be able to deliver the high current to the servo sockets .
• One reason why every voltage regulation works rather inadequately, it is always "slower" than the fast (dynamic) fluctuating current consumption of the servos, and slower than a high-current battery, which can deliver these current peaks.
• However, modern servos need these current peaks in order to be able to deliver their actual performance. Therefore, there is nothing better to power such servos than to lead the battery voltage to the servos in the most direct way, without any voltage regulation or other resistors such as unsuitable plugs or long or thin cables.
• The best way to adapt to different servo voltages is to use suitable battery types. LiFe batteries for all servos, or LiPo batteries for LiPo (HV) servos. Voltage regulation is therefore not necessary.
Splitter: 18 S.BUS
Servo outputs: 18
S.BUS outputs / inputs: 2
Battery connection: 2x XT60
Continuous current max: 120A
Voltage range: 5-8.4V
Input voltage = output voltage