Frequency generator

Electrical transmission or interconnection systems – Wave form or wave shape determinative or pulse-producing...

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Details

324 79D, 324 83D, 331 65, 331181, G01R 2314

Patent

active

043497462

ABSTRACT:
A frequency generator module has a first generator circuit and a second generator circuit, the frequencies of these circuits being variable by a physical parameter, especially a distance or angular value, with two coils arranged coaxially at a mutual spacing on linear or curved, tubular coil holders, the inductance of these coils being variable by a core displaceable in the coil holder. The combined generator module is connected by a control circuit to a changeover switch which alternately switches the output of one of the two coils to the input of the frequency generator module. A short-circuit ring is arranged in an axially normal plane between the two coils, for the duration of a specific number of pulses of the generator circuit formed from the coil and the generator module. A control and/or regulating device is provided which calculates from certain pulses of successive pulse sequences of the two generator circuits the frequencies (f1; f2) and their difference (f1-f2) and/or a correcting value which is the difference between the actual value and the desired value of the sum total (f1+f2) of the frequencies of the two generator circuits. The corrected frequency difference and/or the value of the physical variable derived therefrom is indicated, or a signal proportional thereto is transmitted.

REFERENCES:
patent: 4088874 (1978-05-01), Hartig
patent: 4135243 (1979-01-01), Peregrino et al.

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