Two new series of 4-pin, low AC input current optocouplers with phototransistor output are available from Vishay Intertechnology, Inc. The VOS628A and VOS627A are offered in the compact SSOP-4 ...
The HCPL-3700 is a threshold detection optocoupler that accepts either an AC or DC input and built using Fairchild’s Optoplanar™ packaging technology for high common mode immunity. It consists of an ...
The circuit in Figure 1 provides a low-cost, isolated ac-line monitor that measures ac-line-voltage level and has some other unique capabilities. The analysis of the circuit is straightforward: When ...
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