JPS6168300U

JPS6168300U -

Info

Publication number: JPS6168300U
Application number: JP15238884U
Authority: JP
Priority date: 1984-10-09
Filing date: 1984-10-09
Publication date: 1986-05-10

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す断続音小型電子
ブザーの回路図、第２図及び第３図は本考案の他
の実施例を示す回路図、第４図は第７図に示す連
続音電子ブザーの電圧波形図、第５図は第１図に
示す継続音小型電子ブザーの電圧波形図、第６図
は従来の継続音電子ブザーの回路図、第７図は第
６図に示す連続音電子ブザーの回路図である。１……連続音電子ブザー、２……継続回路、３
，４……直流電源入力端子、５……トランジスタ
、６……駆動コイル、７……検出コイル、８……
バイアス抵抗、９……電磁型発音体、１０……コ
ンデンサ、１１……電解コンデンサ、１２，１３
……ダイオード、１４……電流制限抵抗。 Fig. 1 is a circuit diagram of an intermittent small electronic buzzer showing an embodiment of the present invention, Figs. 2 and 3 are circuit diagrams showing other embodiments of the invention, and Fig. 4 is a circuit diagram of a small electronic buzzer showing an embodiment of the present invention. The voltage waveform diagram of the sound electronic buzzer, Figure 5 is the voltage waveform diagram of the continuous sound small electronic buzzer shown in Figure 1, Figure 6 is the circuit diagram of the conventional continuous sound electronic buzzer, and Figure 7 is shown in Figure 6. It is a circuit diagram of a continuous sound electronic buzzer. 1... Continuous sound electronic buzzer, 2... Continuation circuit, 3
, 4...DC power supply input terminal, 5...Transistor, 6...Drive coil, 7...Detection coil, 8...
Bias resistor, 9... Electromagnetic sounding body, 10... Capacitor, 11... Electrolytic capacitor, 12, 13
...Diode, 14...Current limiting resistor.

Claims

[Scope of utility model registration request]

A small electromagnetic sounding body using a drive coil and a detection coil as a coil, small elements such as transistors, resistors, capacitors, etc. mounted on the substrate of the small electromagnetic sounding body, and an oscillation circuit configured together with the coil. An intermittent sound small electronic buzzer, characterized in that an electrolytic capacitor is used as the capacitor to repeatedly generate an intermittent sound at an arbitrary period.