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Current Voltage and Resistance
The Potentiometer and Wheatstone Bridge
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a.c. supply alternating current anode applied astable base current base of Ql base-to-emitter battery binary biological bridge calibrated capacitance capacitor cathode Chapter charge chloride circuit of Fig collector current conductor connected constant current flow curve device diode earth electrical electrocardiograph Electrolytic capacitors electrons emitter energy equipment flip-flop frequency function FURTHER READING gate heat high-pass filter impedance inductance inductor input voltage instrument insulated light logic low-pass filter magnetic maximum measured meter microshock monostable monostable multivibrator negative obtained Ohm's law ohms operational amplifier oscilloscope output voltage pass patient peak phase photocell positive potentiometer power supply produce proportional pulse Q output range recording rectifier regulator resistance resistor reverse rise Schmitt trigger screen semiconductor shown in Fig signal solder suitable supply voltage switch temperature thermistor tissue transducer transformer transistor tube typical usually voltage divider voltmeter volts waveform Wheatstone bridge wire zero