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4. 发明专利

JPH021406B2 失效
公开(公告)号：JPH021406B2
公开(公告)日：1990-01-11
申请号：JP14606181
申请日：1981-09-18
申请人： TOKYO KOGYO DAIGAKUCHO
发明人： MINAMI KAZUO , SATO KAZUNORI
IPC分类号： H03B11/02 , H01F21/08 , H03B1/02 , H03B11/00 , H03B11/04 , H03K3/537 , H05H1/11 , H05H1/14 , H05H1/18

5. 发明专利

JP2002064334A APPARATUS AND METHOD FOR OSCILLATION 审中-公开
公开(公告)号：JP2002064334A
公开(公告)日：2002-02-28
申请号：JP2001189485
申请日：2001-06-22
申请人： ATMEL GERMANY GMBH
发明人： HANSELMANN DIETER
IPC分类号： B60R25/10 , H03B11/04 , H03B11/10 , H03L3/00
摘要： PROBLEM TO BE SOLVED: To sufficiently reduce build-up time and attenuation time in an oscillation circuit for accelerating the speed for data transmission between a transmitting part and a receiving part. SOLUTION: In the oscillator which reduces the attenuation time and transient time in the oscillation circuit and is provided with the oscillation circuit to intermittently operate while having at least one capacitor (C) and at least one coil (L), a controller (ST) for exciting the oscillation circuit, a current source (SI) for supplying current to the oscillation circuit and electric switching elements (K1 and K4) provided between the oscillation circuit and the current source, when the oscillation circuit operates intermittently, the controller (ST) holds the current flowing through the coil (L) at a maximum value by connecting the current source (SI) and the coil (L) by turning on the electric switch elements (K1 and K4) and when switching the oscillation circuit to operate, the coil (L) and the current source (SI) are disconnected by turning off the electric switch elements (K1 and K4).

6. 发明专利

JPH04210778A RINGING SIGNAL OSCILLATOR 失效
公开(公告)号：JPH04210778A
公开(公告)日：1992-07-31
申请号：JP40015990
申请日：1990-12-03
申请人： NEC CORP
发明人： EJIMA TOKUMASA
IPC分类号： H02M7/48 , H03B11/04 , H04M3/06
摘要： PURPOSE:To reduce the size and the loss of a transformer by switching a DC input, in pulse, with a high frequency thereby reducing loss of switching element. CONSTITUTION:A PWM control circuit 9 receives an output from an oscillator 10 oscillating with a switching frequency of 100-500kHz, for example, a PWM control switching frequency signal and an output from a differential amplifier 8, as PWM control inputs, and varies the pulse width of PWM control signal output so that the PWM control input voltage is minimized. A switch element 1 is then drived through a drive circuit 11 based on the PWM control signal output thus switching a DC input and producing a PWM pulse signal. The PWM pulse signal is then boosted through a transformer 2 and converted into a required voltage. When the switching frequency is set at a sufficiently high level, the transformer 2 can be reduced in size. Output of the transformer 2 is passed through a rectifier 3 and a lowpass filter 4 to attenuate the switching frequency component and the higher harmonic components thereof sufficiently thus producing a sine wave ringing signal.

7. 发明专利

JPS5848506A HIGH-FREQUENCY PULSE OSCILLATOR 失效
公开(公告)号：JPS5848506A
公开(公告)日：1983-03-22
申请号：JP14606181
申请日：1981-09-18
申请人： TOKYO KOGYO DAIGAKU
发明人： MINAMI KAZUO , SATOU KAZUNORI
IPC分类号： H03B11/02 , H01F21/08 , H03B1/02 , H03B11/00 , H03B11/04 , H03K3/537 , H05H1/11 , H05H1/14 , H05H1/18
摘要： PURPOSE:To shift high-frequency energy unidirectionally and to continue an electric oscillation with a large power for a required time for a load-side LC resonator, by changing the resonance frequency of the LC resonator at the power supply side through the use of a variable inductance. CONSTITUTION:Variable and fixed LC resonance circuits RC1 and RC are coupled via a capacitor C0 of a small capacitance. A gap switch GS is inserted to the circuit RC1 and connected with a high-voltage DC power supply via a high resistance RS. An output coil OUT is coupled with an inductance element of the circuit RC. At the moment when the resonance frequency of the circuit RC1 is coincident with a fixed resonance frequency of the circuit RC, a high-frequency energy unidirectionally produced from the circuit RC1 to ward the RC is nonadiabatically transmitted, allowing to cause high-frequency pulse oscillation to the circuit RC.

10. 发明专利

JPS497380B1 失效
公开(公告)号：JPS497380B1
公开(公告)日：1974-02-20
申请号：JP3638864
申请日：1964-06-29
IPC分类号： H03B28/00 , H02M1/08 , H02M7/515 , H02M7/523 , H03B11/04 , H03B11/10 , H03B27/00

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