Discrete Battery Eliminator Unit

Discrete BEC

Thank you for buying an AsTec Product. With a little care it will give you hours of good service and enjoyment. To ensure its reliability we have used nothing but the best parts available. We have done everything in our power to ensure that the unit that your unit will function correctly, but in the unlikely event that you have a problem please do not hesitate to contact us.

The BEC unit has been designed to complement my range of speed controllers and to provide other users with a choice of power supply options. The BEC unit will allow the use of main batteries to provide the power for the radio receiver. Please note that most if not all receivers on the market today are designed to use an input of between 4.8 and 6.0 volts. If you are using a 6 volt main battery connecting it direct to your receiver may introduce unwanted noise from the motor into your radio system This unit will solve that problem by providing a closely regulated output to the radio gear. The BEC unit is suitable for use in all models but was originally designed for fast electric racing where the removal of receiver battery weight can provide an advantage. In fast electrics it is particularly useful for formula 2 and 3 where in conjunction with one of my speed controllers it will provide full control of futaba s148 servos until the model has no motive power left.

The BEC unit may be used with up to 12 cells (14.4) volts for extended periods of time, and up to 30 volts with an additional heat sink (not supplied). I strongly suggest that it is not mounted direct to plastic hulls as it does get warm in use.

Specification

0.5 amp max constant current load

Output 5 volts - minimum input 5.5 volts

Maximum input (momentary) 24 volts

Installation

Connect the thick flying leads to your main power battery as follows:

These leads may be soldered to the speed controller side of the battery connectors. An On/Off switch may be inserted in the Battery +ve lead.

The servo lead may be plugged directly into the receiver or via an On/Off switch assembly to suit your layout. It is wise to place the unit and the attached servo lead some distance away from power cables in order to reduce the possibility of noise pick up.

The unit may be successfully mounted, say to the side of the speed controller, with self adhesive Velcro. For multiple servo applications the unit may be mounted to an electrically isolated heatsink.

In normal use the unit is virtually indestructible..................Happy modelling.