Description
The FK1903 uses the famous “555” timer IC to drive two blinking LEDs.
This circuit introduces the “555” and allows the speed of the blinking to be easily adjusted.
This is an ideal kit for introducing the “555” to interested learners.
Technical data
– Power supply : 4.5-12VDC.
– Electric current consumption : 22mA (max.) @ 12VDC.
– Flash frequency is adjustable with a trimpot.
– There is an OUT point that is used to connect an external LED
which can supply a maximum current of 50 mA.
– PCB dimension : 32.8mm x 35.6mm (1.29 in. x 1.40 in.)





