JPS5451448A - Switching amplifier - Google Patents
Switching amplifierInfo
- Publication number
- JPS5451448A JPS5451448A JP11803677A JP11803677A JPS5451448A JP S5451448 A JPS5451448 A JP S5451448A JP 11803677 A JP11803677 A JP 11803677A JP 11803677 A JP11803677 A JP 11803677A JP S5451448 A JPS5451448 A JP S5451448A
- Authority
- JP
- Japan
- Prior art keywords
- base
- turned
- terminal
- output
- signal source
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
- Amplifiers (AREA)
Abstract
PURPOSE:To select the first and second signal sources electronically, by feeding the control voltage to the base of the first and second transistor Tr of the opposite polarity, inputting the first and second signal source and interrupting the common power supply of the control voltage. CONSTITUTION:When the switch 22 is turned ON, the base current of PNP Tr 100 is flowed, Tr 10 is conducted. If the amplification factor A is 1 when the same values of resistors 16 and 18 are taken, and the output of the signal source 1 is taken place at the terminal 24. Since NPN Tr 11 is grounded for the base via the resistor 20 and no base current is flowed, Tr 11 is not the load of Tr 10. When the switch 22 is turned OFF, voltage Vcc is fed to the base of Tr11 via resistors 21 and 20, Tr11 is conductive, and the output of the signal source 2 is taken place at the terminal 24. At this time, the amplification factor of Tr11 is 1 since the collector is connected to Vcc. The base of tr 10 is turned off with backbias and it is not the load of Tr11. Thus, the output of the signal sources 1 and 2 is outputted to the terminal 24 selectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52118036A JPS6040732B2 (en) | 1977-09-30 | 1977-09-30 | switching amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52118036A JPS6040732B2 (en) | 1977-09-30 | 1977-09-30 | switching amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5451448A true JPS5451448A (en) | 1979-04-23 |
JPS6040732B2 JPS6040732B2 (en) | 1985-09-12 |
Family
ID=14726452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52118036A Expired JPS6040732B2 (en) | 1977-09-30 | 1977-09-30 | switching amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6040732B2 (en) |
-
1977
- 1977-09-30 JP JP52118036A patent/JPS6040732B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6040732B2 (en) | 1985-09-12 |
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