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Converters:
Period to Voltage
Converters -- Main
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Last Updated on:
Friday, March 23, 2012 04:29 PM |
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| Circuits
Designed by Dave Johnson, P.E. : |
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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.
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Links to electronic
circuits, electronic schematics, designs for engineers, hobbyists, students &
inventors:
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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] |
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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] |
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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. |
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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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