. Electronic apparatus for biological research . Tension wire Figure Force-recording apparatus In drawing the electrical equivalent circuit it will be seen that all three components, mass, resistance and compliance, have the same displacement, and that the equivalent circuit thus has inductance, resistance and capacitance in series (Figure ). The applied force is the applied voltage; the velocity of the pen is the current in the circuit. m R c V Figure Equivalent circuit of force-recording apparatus Since the pen's displacement, not its velocity, is required, it is necessary to u
. Electronic apparatus for biological research . Tension wire Figure Force-recording apparatus In drawing the electrical equivalent circuit it will be seen that all three components, mass, resistance and compliance, have the same displacement, and that the equivalent circuit thus has inductance, resistance and capacitance in series (Figure ). The applied force is the applied voltage; the velocity of the pen is the current in the circuit. m R c V Figure Equivalent circuit of force-recording apparatus Since the pen's displacement, not its velocity, is required, it is necessary to use one of the equations: x = Jy d?, ^ = J/ d/ A useful artifice to avoid this integration uses the fact that the voltage across the condenser is given by the equation 475
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