Electronic apparatus for biological research Electronic apparatus for biological research electronicappara00dona Year: 1958 TRANSDUCERS The tuning inductor of the oscillator in Figure has an open magnetic circuit, and is varied by the movement of a mumetal armature. The output of the oscillator is converted into square waves by the limiting valve, and •+150V 47k A7k Output 0005 '/26J6 EF91 V26AL5 V26AL5 Figure Circuit for variable inductance transducer these square waves feed a 'pulse counter discriminator'^^ which gives a output voltage proportional to the frequency of th
Electronic apparatus for biological research Electronic apparatus for biological research electronicappara00dona Year: 1958 TRANSDUCERS The tuning inductor of the oscillator in Figure has an open magnetic circuit, and is varied by the movement of a mumetal armature. The output of the oscillator is converted into square waves by the limiting valve, and •+150V 47k A7k Output 0005 '/26J6 EF91 V26AL5 V26AL5 Figure Circuit for variable inductance transducer these square waves feed a 'pulse counter discriminator'^^ which gives a output voltage proportional to the frequency of the oscillations. Once again the frequency of oscillation must be high compared with the signal frequency. Press to balance -oTIo » O+60 V 120 > .—-j^^nrm^-^Output 1-5$ 9X ?X ^u-uui f ' •—^ . I From transducer
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