Oscillators – With temperature modifier
Reexamination Certificate
2011-06-21
2011-06-21
Chang, Joseph (Department: 2817)
Oscillators
With temperature modifier
C331S158000
Reexamination Certificate
active
07965146
ABSTRACT:
A constant-temperature type crystal oscillator includes: a crystal unit; an oscillator output circuit; a temperature control circuit; and a circuit substrate, on which circuit elements are installed. A principal surface of the crystal unit is installed so as to face one side board plane of the circuit substrate with interposing a first heat conducting resin, and the heating resistors are installed to be thermally coupled to the crystal unit via a second heat conducting resin. The principal surface of the crystal unit adheres to the one side board plane of the circuit substrate with interposing the first heat conducting resin. The heating resistors are installed on the one side board plane of the circuit substrate so as to sandwich the lead wires including a portion between the pair of lead wires of the crystal unit, and the heating resistors surround an outer circumference of the crystal unit.
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Blackman William D.
Carrier Joseph P.
Carrier Blackman & Associates P.C.
Chang Joseph
Nihon Dempa Kogyo Co. Ltd.
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