ASIC stepless dimming lamp circuit


Posted on Mar 28, 2007

Is using a dimmer HT7700A ASIC production keyed stepless dimming lights, make use SB single button control, dimming the brightness has 96 changed. HT7700A scale using CMOS process is made using standard D1P-S-pin package. Preparation of the pin cylinder functions


ASIC stepless dimming lamp circuit
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as follows: The first O feet zC alternating current zero-crossing detection signal terminal; first feet SFNSI // KEY as a touch sensor / key signal input terminal; first feet FB when touch input signal current fed ; first leg V ;., Power source negative terminal; first feet IRIC, trigger output for triggering the thyristor;. The first and foot OSC2 OSC1 oscillation signal output, respectively, an input terminal, an external resistor F 62kn first feet v. ., Power source positive terminal.




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