User manual

tams elektronik
English WBA-1 | WBA-2 | WBA-3
4. Operation overview
The double flashlights WBA-1, WBA-2 and WBA-3 have been designed
to control LEDs. The circuit´s two outputs are alternately switched on
and off. Fields of application are e.g. St. Andrew´s crosses, the flash
lights of emergency or roadworks vehicles or signal lamps.
Flashing frequency
The flashing frequency of the double flashlights WBA-1 and WBA-2
cannot be altered. Due to component tolerances it is 1 to 2 Hz. Thus
the time period between two flashes is one to a half second.
With the flashlight WBA-3 the flashing frequency can be set at a
trimmpot to 0,2 to 0,4 Hz. The time period between two flashes is 5 to
0.25 seconds then.
Connecting LEDs
The LEDs are connected directly to the outputs, the required series
resistors are integrated in the circuit. Each output enables the
connection of one LED, two LEDs in parallel or several LEDs in series.
The maximum number of LEDs that can be connected in series to one
output depends on the available voltage and the fluorescent color of
the LEDs.
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