HT7712B
Features
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High noise immunity CMOS technology Operating voltage: 10V Line frequency: 60Hz or 50Hz. High sensitivity and stability
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- Polarity insensitive with AC line Loading range of sense input from 0 to 1200pf Minimum peripheral ponents
General Description
The HT7712B/HT7713B is a CMOS fabricated LSI chip in an 8-lead DIP package. It is designed to control the brightness of lamps by changing the firing angles of the TRIAC through a touch sensitive input. The chip can be used either as a 3-step or a switch function dimmer. The high sensitivity and stability of the HT7712B/HT7713B ensure its high performance. The touch sensitive input can sustain very heavy capacitive loading and propagate sense through a highly resistive line. The application circuit of the HT7712B/HT7713B is very simple. Of these two chips, the HT7713B is a 3-step dimmer controller whose trigger angles are set at 17°, 86°, 121°
- where 17° is the brightest, 86° the medium brightness, and 121° the...
