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More than Circuit EngineeringVoltage-to-Frequency Converter
Ñõåìû >> Converters >> Voltage-to-Frequency ConverterVoltage-to-Frequency Converter
Voltage-to-Frequency
Converter is advantageous to use for Data Transmission
or Signals
Transmission in Long Lines. The Use of simple Circuit
decisions is enabled to work in conditions of Large Electric Interferences.
Pic.1.
Input Signal is described by a formula: U=U(t). For a period Ò is necessary to conduct n averaging for reduction of Random Error.
Proportionality Factor
of Converter, H/V, 
Pic.1.
Voltage-to-Frequency Converter Circuit on Transistors ÊÒ315,
ÊÒ361.
Pic.2. Output Signal Frequency is Dependent on Output Voltage.
Time of one measuring 
Driving Frequency: 
or
Proportionality Factor
for a scale.
Basic Error of
Voltage-to-Frequency Converter is
determined by a formula:
- Random Error.
- Systematic Error.
- Maximal Error,
For the Converter
- Temperature Error.
Then 
, and a formula (1) can be
written down as:
Basic constituent of a formula (4) is Error. The Error Depend on a temperature. This problem decides through stabilization of temperature process during measuring or by the use of Converters on one crystal IC. High descriptions has one crystal Voltage-to-Frequency Converter ÊÐ1108ÏÏ1. Proportionality Factor of Converter is 1 êÍ/V. Non-linearity Factor is 0.01% in Frequency Range 10 êÍ [1].
Pic.3. Block Diagram of
Voltage-to-Frequency Converter ÊÐ1108ÏÏ1.
added 18.07.07 00:58:49 | 
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