JPS57173204A - Power supplying circuit for amplifying element - Google Patents
Power supplying circuit for amplifying elementInfo
- Publication number
- JPS57173204A JPS57173204A JP56058762A JP5876281A JPS57173204A JP S57173204 A JPS57173204 A JP S57173204A JP 56058762 A JP56058762 A JP 56058762A JP 5876281 A JP5876281 A JP 5876281A JP S57173204 A JPS57173204 A JP S57173204A
- Authority
- JP
- Japan
- Prior art keywords
- power
- switching elements
- capacitors
- voltages
- output
- 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 reduce size and to increase output power while improving power efficiency by switching power voltages in accordance with an output level.
CONSTITUTION: Switching elements 3 and 3' are provided between power sources +VCC and -VCC, and the collectors of transistors (TR) Q1 and Q1' as power supply terminals. Series circuits of capacitors C1 and C1' and charging resistance R1 and R1' are provided with the switching elements 3 and 3', and an each point. During the conduction periods of the switching elements 3 and 3', a power voltage VCC is applied to the collectors of the TRs Q1 and Q1 and the capacitors C1 and C1' are charged. Level comparators 4 and 4' compare the charging output voltages of the capacitors C1 and C1' with the levels of voltages v0+Es and vo- Es' shifted in level from a circuit output v0, and on the basis of their comparison outputs, the switching elements 3 and 3' are turned on and off.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56058762A JPS57173204A (en) | 1981-04-18 | 1981-04-18 | Power supplying circuit for amplifying element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56058762A JPS57173204A (en) | 1981-04-18 | 1981-04-18 | Power supplying circuit for amplifying element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57173204A true JPS57173204A (en) | 1982-10-25 |
Family
ID=13093548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56058762A Pending JPS57173204A (en) | 1981-04-18 | 1981-04-18 | Power supplying circuit for amplifying element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57173204A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5045550A (en) * | 1973-08-25 | 1975-04-23 | ||
JPS5394162A (en) * | 1977-01-28 | 1978-08-17 | Hitachi Ltd | Power amplifier |
-
1981
- 1981-04-18 JP JP56058762A patent/JPS57173204A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5045550A (en) * | 1973-08-25 | 1975-04-23 | ||
JPS5394162A (en) * | 1977-01-28 | 1978-08-17 | Hitachi Ltd | Power amplifier |
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