This post explains for the semiconductor C1701C.
The Part Number is C1701C. The Package is DIP 8 Pin Type
The function of this semiconductor is traic controller ( Zero Voltage Switch ) .
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The uPC1701C is a triac controller providing a complete solution for temerature controlled electic panel heaters, cookers, film processing baths etc. Switching occurs at the zero voltage point in order to minimize radio frequency interference. The device is suitable for mains-on-line operation and require minimal external components
1. Easy operation either through the AC line or a DC supply
2. Supply voltage control
3. Very few external components
Bipolar Analog Integrated Circuit […]