JPH0310619U

JPH0310619U -

Info

Publication number: JPH0310619U
Application number: JP6943889U
Authority: JP
Priority date: 1989-06-14
Filing date: 1989-06-14
Publication date: 1991-01-31

Description

[Brief explanation of drawings]

第１図ａ，ｂは本考案の一実施例に係る圧電振
動子の片面側および他面側を同じ方向から見た平
面図、第２図は同圧電振動子の等価回路図、第３
図は同圧電振動子の外装の一例を示す斜視図、第
４図は同圧電振動子の外装の一例を示す分解斜視
図、第５図ａおよびｂは従来の圧電振動子の一例
の片面側および他面側を示す平面図、第６図は同
圧電振動子の斜視図、第７図は従来の圧電振動子
の他の例を示す斜視図、第８図ａおよびｂはそれ
ぞれ第６図および第７図に示す圧電振動子の等価
回路図、第９図ａおよびｂはそれぞれ第６図およ
び第７図に示す圧電振動子を用いてコルピツツ回
路を構成した場合の回路図である。符号の説明、１…圧電振動子、２…圧電基板、
３…スリツト、４…略Ｕ字形電極、６…第１電極
、７…第２電極、８…第３電極、９…第４電極、
Ｔ_１…第１引出端子、Ｔ_２…第２引出端子、Ｔ_３…第３引出端子、Ｃ_１…第１コンデンサ、Ｃ_２…
第２コンデンサ。 1A and 1B are plan views of one side and the other side of a piezoelectric vibrator according to an embodiment of the present invention viewed from the same direction, FIG. 2 is an equivalent circuit diagram of the same piezoelectric vibrator, and FIG.
The figure is a perspective view showing an example of the exterior of the piezoelectric vibrator, Figure 4 is an exploded perspective view showing an example of the exterior of the piezoelectric vibrator, and Figures 5a and b are one side of an example of the conventional piezoelectric vibrator. FIG. 6 is a perspective view of the piezoelectric vibrator, FIG. 7 is a perspective view of another example of the conventional piezoelectric vibrator, and FIGS. 8a and 8b are FIG. 6, respectively. and an equivalent circuit diagram of the piezoelectric vibrator shown in FIG. 7, and FIGS. 9a and 9b are circuit diagrams when a Colpitts circuit is constructed using the piezoelectric vibrator shown in FIGS. 6 and 7, respectively. Explanation of symbols, 1... piezoelectric vibrator, 2... piezoelectric substrate,
3...Slit, 4...Substantially U-shaped electrode, 6...First electrode, 7...Second electrode, 8...Third electrode, 9...Fourth electrode,
_T1 ...first drawer terminal, _T2 ...second drawer terminal, _T3 ...Third extraction terminal, _C1 ...First capacitor, _C2 ...
Second capacitor.

Claims

[Claims for Utility Model Registration] A piezoelectric vibrator comprising a piezoelectric substrate provided with a slit for forming a tuning fork portion, and approximately U-shaped electrodes formed on the front and back surfaces of the substrate along the slit, A piezoelectric vibrator characterized in that first to fourth electrodes are formed on a substrate excluding the tuning fork portion. A first electrode is formed integrally with a substantially U-shaped electrode on one of the front and back surfaces, and is connected to a first lead-out terminal. A second electrode is formed on one side of the piezoelectric substrate separately from the first electrode, and is connected to a second lead terminal. a first capacitor formed on the other surface of the piezoelectric substrate and facing the first electrode;
A third electrode short-circuited with the second electrode. A second capacitor is formed on the other surface of the piezoelectric substrate integrally with the substantially U-shaped electrode and separately from the third electrode, and is connected to a third lead-out terminal, and a second capacitor is connected to the second electrode. A fourth electrode constitutes.