Title:
CIRCUIT FOR CONVERTING INDUCTANCE TO PREDETERMINED FREQUENCY
Document Type and Number:
Japanese Patent JPS546448
Kind Code:
A
Abstract:
A circuit arrangement for converting an inductance value into a specific frequency particularly for producing a pressure-dependent frequency fully compensated against variations in temperature for injection systems in internal combustion engines. The circuit arrangement comprises a comparator, the output of which is connected to a series circuit comprising at least one diode, a coil with variable inductance and a temperature-dependent resistor, all connected to a current supply line with the end of the coil opposite the comparator output coupled back to a first input of the comparator. The potential of the second input of the comparator can be affected by the output value of a voltage divider between the two current supply lines and a regenerative feedback line emanating from the output of the comparator. During the operation of the circuit arrangement, a pulse sequence is obtained, the frequency of which is determined by the inductance.
Inventors:
ERUNSUTO ORAFU PAAGERU
Application Number:
JP7071978A
Publication Date:
January 18, 1979
Filing Date:
June 12, 1978
Export Citation:
Assignee:
BOSCH GMBH ROBERT
International Classes:
H03K3/0231; F02D41/00; H03B5/26; H03K7/06; H03B5/04; (IPC1-7): H03K3/02; H03K7/06
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