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Converters: Period to Voltage
Converters -- Main Page
Last Updated on:
Monday, October 03, 2011 06:07 PM


Circuits Designed by Dave Johnson, P.E. :
  • PULSE PERIOD TO VOLTAGE CONVERTER
    This is a test circuit converts a square wave input signal into a voltage. But, the voltage produced is proportional to the time between edges (period) of the signal, not the frequency. The range is from 100uS to to 10mS, which produces a voltage from 100mV to 10 volts. Other scale factors are also possible. The circuit is powered from single 15v supply and uses inexpensive parts. It is great when a signal's period instead of its frequency needs to be monitored.


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
 
557 Makes Handy Voltage-to-time Converter -  02/01/01 EDN-Design Ideas.....The circuit in Figure 1 is a simple, low-cost voltage-to-time converter using  ubiquitous 555 timer chip. You can use  IC's monostable multivibrator as a voltage-to-time converter by connecting  analog-voltage input to  charging resistor, R, instead of connecting R to VCC. With this modification,..... [Design Idea by J Jayapandian, IGCAR, Tamil Nadu, India]
Circuit converts pulse width to voltage -  25-Oct-01 Issue of EDN  The circuit in Figure 1 converts pulse information to a clean dc voltage by the end of a single incoming pulse. In another technique, an RC filter can convert a PWM signal to an averaged dc voltage, but this method is slow in responding. Converting low-duty-cycle pulse information is slower yet..... [Design Idea by James Mahoney, Linear Technology Corp, Milpitas, CA]
Converter Ignores Power Supply Variations -  01/05/95 EDN-Design Ideas…. EDN is migrating links. This link is not verified.  Search the "title" EDN for new link.
Pulse Period to Voltage Converter -  This is a test circuit converts a square wave input signal into a voltage. But, the voltage produced is proportional to the time between edges (period) of the signal, not the frequency. The range is from 100uS to to 10mS, which produces a voltage from 100mV to 10 volts. Other scale factors are also possible. The circuit is powered from single 15v supply and uses inexpensive parts. It is great when a signal's period instead of its frequency needs to be monitored. Published in Electronic Design, Sept 27, 1990. …. [Designed by David A. Johnson]


 
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