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Voltage/frequency converter and its use in an optical wave guide transmission arrangement

  • US 4,947,033 A
  • Filed: 12/16/1988
  • Issued: 08/07/1990
  • Est. Priority Date: 01/08/1988
  • Status: Expired due to Fees
First Claim
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1. Voltage/frequency converter with a first change-over switch (13) which supplies in its first position a measurement voltage and in its second position a reference voltage to a first input (15) of a comparison circuit (16), and with a second change-over switch (20) which supplies in its first position a first signal to be integrated and in its second position a second signal to be integrated via an integrator (22, 34) to the second input (26) of the comparison circuit which generates pulses dependent on the measurement voltage and which sets the two change-over switches into their first position when the voltage supplied by the integrator is equal to the reference voltage, and into their second position when the value supplied by the integrator is equal to the measurement voltage, characterized in that one of the signals to be integrated is derived from the measurement voltage.

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