JPS5797710A - Power amplifying device - Google Patents
Power amplifying deviceInfo
- Publication number
- JPS5797710A JPS5797710A JP55174264A JP17426480A JPS5797710A JP S5797710 A JPS5797710 A JP S5797710A JP 55174264 A JP55174264 A JP 55174264A JP 17426480 A JP17426480 A JP 17426480A JP S5797710 A JPS5797710 A JP S5797710A
- Authority
- JP
- Japan
- Prior art keywords
- output
- pwm
- signal
- auxiliary signal
- dsb
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE: To prevent the occurrence of a DC offset for no signal even if the pulse width of PWM.DSB waves is limited, by including an auxiliary signal, which becomes a DC offset cancelling pulse, in PWM.DSB waves for no signal.
CONSTITUTION: The output from a PWM full-wave rectifying part 11 and the rectangular wave signal from a clock oscillating part 12 are operated for AND, and the output is applied to a PWM.DSB control signal generating part 13. The auxiliary signal from an auxiliary signal generating part 15 is inserted to the output from the control signal generating part 13 by an auxiliary signal superposing part 14, and the output is applied to a transformer T11. The output induced in the secondary side of the trabsformer T11 is switched by synchronizing switches S1 and S2 and is demodulated by synthesis. Since this demodulation output has the inserted auxiliary signal for cancelling DC offset, the integral output in a capacitor C3 is in the no-output state where no DC components remains at all.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55174264A JPS5797710A (en) | 1980-12-10 | 1980-12-10 | Power amplifying device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55174264A JPS5797710A (en) | 1980-12-10 | 1980-12-10 | Power amplifying device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5797710A true JPS5797710A (en) | 1982-06-17 |
Family
ID=15975593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55174264A Pending JPS5797710A (en) | 1980-12-10 | 1980-12-10 | Power amplifying device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5797710A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994021036A1 (en) * | 1993-03-02 | 1994-09-15 | Kirn Larry J | Switching amplifier with impedance transformation output stage |
AU721511B2 (en) * | 1996-12-11 | 2000-07-06 | Gn Netcom A/S | Class D amplifier |
-
1980
- 1980-12-10 JP JP55174264A patent/JPS5797710A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994021036A1 (en) * | 1993-03-02 | 1994-09-15 | Kirn Larry J | Switching amplifier with impedance transformation output stage |
AU721511B2 (en) * | 1996-12-11 | 2000-07-06 | Gn Netcom A/S | Class D amplifier |
US6191650B1 (en) | 1996-12-11 | 2001-02-20 | G/N Netcom A/S | Class d amplifier with pulse width modulation and a very low power consumption |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS53109154A (en) | Higher harmonic remover | |
JPS5457829A (en) | Processing circuit for color video signal | |
JPS5797710A (en) | Power amplifying device | |
JPS5529228A (en) | Switching regulator for pcm device | |
JPS5359820A (en) | Power source transformer | |
JPS5577372A (en) | Multi-output converter | |
JPS5417622A (en) | Scanning-speed modulator circuit | |
JPS5317932A (en) | Electric current source circuit | |
JPS5499922A (en) | Switching regulator | |
JPS54128039A (en) | High frequency heating device | |
JPS53128717A (en) | Dc voltage transforming device | |
JPS53111444A (en) | Converter for dc transmission system | |
JPS55163481A (en) | Time standard generator | |
JPS5317931A (en) | Electric current source circuit | |
JPS5418029A (en) | Transformer system | |
JPS54106819A (en) | Generating control system | |
JPS548830A (en) | Inverter | |
JPS52112212A (en) | Frequency converter | |
JPS54115281A (en) | Phase detector | |
JPS5478071A (en) | Relay control circuit | |
JPS5797711A (en) | Pwm-dsb wave generating circuit | |
JPS5744304A (en) | Frequency dividing circuit | |
JPS558289A (en) | Ac power supply | |
JPS5270327A (en) | Rectifier | |
JPS53121124A (en) | Inverter device |