Constant-temperature type crystal oscillator

Details Constant-temperature type crystal oscillator Constant-temperature type crystal oscillator

2009-09-16

2011-12-13

Kinkead, Arnold (Department: 2817)

Oscillators

Electromechanical resonator

Crystal

C331S176000, C331S1160FE, C331S1160FE, C331S068000

Reexamination Certificate

active

08076983

ABSTRACT:
A constant-temperature type crystal oscillator includes: a crystal unit including a case main body, in which two crystal terminals and two dummy terminals are provided on an outer bottom face thereof, and a crystal element housed in the case main body; an oscillator output circuit including an oscillating stage and a buffering stage; a temperature control circuit for keeping an operational temperature of the crystal unit; and a circuit substrate, on which circuit elements of the crystal unit, the oscillator output circuit and the temperature control circuit are installed. The temperature control circuit includes: heating chip resistors; a power transistor; and a temperature sensing element. Each of the dummy terminals is connected to a respective one of circuit terminals on the circuit substrate. At least one of the circuit terminals is connected to an electrically-conducting path, to which one terminal of the heating chip resistors is electrically connected, on the circuit substrate.

REFERENCES:
patent: 7479835 (2009-01-01), Mitome et al.
patent: 2005-175703 (2005-06-01), None
patent: 2005-341191 (2005-12-01), None
patent: 2006-311496 (2006-11-01), None
patent: 2007-110698 (2007-04-01), None
patent: 2007-201858 (2007-08-01), None

Affiliated with

Also associated with

Rating

Constant-temperature type crystal oscillator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Constant-temperature type crystal oscillator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant-temperature type crystal oscillator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4313642