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General Description of the following
circuit. This circuit is based around HT–2050 manufactured by HOLTEK
semiconductors. It is a low cost, low-power C-MOS LSI designed for lamp
andLED flash driver. It requires minimum external components.You can
operate it with just two AAA cell or 3v Battery.Circuit has five flash
outputs with 10mA drive capability that can implement random or sequence
flashing function controlled by one option pin.It only requires one
external resistor for typical application. It is very suitable for the
use of the flash products such as disco glasses, disco hat, gift card,
X’mas decoration and so forth.
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this circuit in PDF