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Fiberoptic Interface

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An op amp is used to interface between a fiberoptic system and the MOS SCR to multi-cycle, half-wave control of a load. This receiver has two complementary outputs, one at a quiescent level of about 0.6V and the second at 3V. By adding a 4.7V zener in series with the return bus, the effective Vcc becomes 5.3V and also the 0.6V output level is translated up to about 5.3V. This level is compatible with the reference input (5.9V) of the single-ended powered op-amp acting as a comparator.


Parts List:
Component: Value: Datasheet: Qty:
Resistor

3.9K

Not Available 01
Resistor

5.6K

Not Available 01
Resistor

10K

Not Available 01
Diode 1N914 Available 02
Diode MR502 Not Available 01
Zener 1N4732 Not Available 01
SCR MCR1000-4 Not Available 01
IC MFOD404F Not Available 01
IC MC1741 Available 01