Some temperature sensitivity exists in the circuit of Figure 4(A) due to the variation in base emitter voltage of Ql and Qla#39;s current gain. ... The oscillator operates over a frequency range of 350 to 450 cps for -2AdC to 35 AdC temperature change. ... Referring to the block diagram, Figure 5, operation is as follows: the electrical signal from the sensor is an ac current, the frequency of which is a linear function ofanbsp;...
|Title||:||Marine Sciences Instrumentation|