User manual

tams elektronik
WBA-1 | WBA-2 | WBA-3 English
Maximum number of LEDs per output connected in series
Forward
voltage of
the LEDs
*1
Nominal |
operating voltage
of the transformer
(=)
*2
Max.
number
of
LEDs
*3
Nominal |
operating voltage
of the transformer
(~)
*2
Max.
number
of
LEDs
*3
2 V 12 V | 12 V 5 12 V | approx. 17 V 7
4 V 12 V | 12 V 2 12 V | approx. 17 V 3
2 V 16 V | 16 V 7 16 V | approx. 22 V 10
4 V 16 V | 16 V 3 16 V | approx. 22 V 5
2 V 18 V | 18 V 8 18 V | approx. 25 V 11
4 V 18 V | 18 V 4 18 V | approx. 25 V 5
*1
The forward voltage of white and blue LEDs is approx. 4 V, differing coloured LEDs approx.
2 V.
*2
Nominal voltage and operating voltage: The operating voltage with a.c. transformers is
approx. 1,4 times the nominal voltage given on the transformer. With d.c. power packs the
operating voltage corresponds to the given nominal voltage.
*3
Tolerance and / or voltage fluctuations in practice often cause the calculated operating
voltage not being available. For that reason it is recommended to connect one LED less than
possible in theory.
Using as a single flashlight
The module can also be used as a single flashlight. For that purpose
you must replace one LED with a wire bridge. Compared to when LEDs
are connected to both outputs, the flashing frequency is a little faster.
Adjusting the frequency of the WBA-3
In order to adjust the flashing frequency of the WBA-3 insert a small
screwdriver into the trimmpot´s slot. When turning the srewdriwer as far as
possible to the left the highest frequency (= quickest possible flashing
sequence) is set, when turning it as far as possible to the right the lowest
frequency (slowest possible flashing sequence) is set.
Page 17