JPS5530768A - Output circuit of balanced type driver - Google Patents

Output circuit of balanced type driver

Info

Publication number
JPS5530768A
JPS5530768A JP10359078A JP10359078A JPS5530768A JP S5530768 A JPS5530768 A JP S5530768A JP 10359078 A JP10359078 A JP 10359078A JP 10359078 A JP10359078 A JP 10359078A JP S5530768 A JPS5530768 A JP S5530768A
Authority
JP
Japan
Prior art keywords
trt
diode
base
output
emitter
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
Application number
JP10359078A
Other languages
Japanese (ja)
Inventor
Yasunori Kanai
Soichi Fuku
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10359078A priority Critical patent/JPS5530768A/en
Publication of JPS5530768A publication Critical patent/JPS5530768A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To increase the output inverse voltage and to prevent the damage of driver at the disconnection of power supply, by inserting a diode in forward polarity to the series circuit of transistor and resistor connected between the power supply and the output terminal.
CONSTITUTION: The diode D3 is inserted in forward polarity in series to the collector of the transistor TrT2. The emitter of TrT1 and the base of TrT2 are connected to the output terminal OT via the resistor R4 and the diode D4. As a result, the diode D3 in opposite polarity is inserted in the path of the output terminal OT, resistor R2, emitter, base, base-collector of TrT2 and power supply Vcc, and when a schottky barrier diode is used as the diode D2, the output inverse voltage is two or more than the inverse voltage of the base and emitter or TrT2, that is , 11V or more. It can withstand sufficiently, even if the driver output is 10V. Further, since slight base current supply at TrT1 is unchanged, no problem to switching speed is caused.
COPYRIGHT: (C)1980,JPO&Japio
JP10359078A 1978-08-25 1978-08-25 Output circuit of balanced type driver Pending JPS5530768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10359078A JPS5530768A (en) 1978-08-25 1978-08-25 Output circuit of balanced type driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10359078A JPS5530768A (en) 1978-08-25 1978-08-25 Output circuit of balanced type driver

Publications (1)

Publication Number Publication Date
JPS5530768A true JPS5530768A (en) 1980-03-04

Family

ID=14357978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10359078A Pending JPS5530768A (en) 1978-08-25 1978-08-25 Output circuit of balanced type driver

Country Status (1)

Country Link
JP (1) JPS5530768A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49130664A (en) * 1973-04-16 1974-12-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49130664A (en) * 1973-04-16 1974-12-14

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