JPS55127729A - Malfunction prevention circuit of transistor - Google Patents

Malfunction prevention circuit of transistor

Info

Publication number
JPS55127729A
JPS55127729A JP3486479A JP3486479A JPS55127729A JP S55127729 A JPS55127729 A JP S55127729A JP 3486479 A JP3486479 A JP 3486479A JP 3486479 A JP3486479 A JP 3486479A JP S55127729 A JPS55127729 A JP S55127729A
Authority
JP
Japan
Prior art keywords
leakage current
flowed
conductive
becomes
generated
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
JP3486479A
Other languages
Japanese (ja)
Inventor
Yoshio Akita
Iwao Yokomori
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.)
Denso Corp
Original Assignee
NipponDenso Co 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP3486479A priority Critical patent/JPS55127729A/en
Publication of JPS55127729A publication Critical patent/JPS55127729A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/04—Modifications for accelerating switching

Landscapes

  • Electronic Switches (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To prevent malfunctions of the second Tr by providing an electrical means, which shunts the leakage current generated for non-conduction of the first Tr from a resistance according to the leakage current generated in the third Tr, in the electronic circuit suitable for control of an alternator for vehicles, etc. CONSTITUTION:When the output voltage of alternator 10 becomes a prescribed value or less, high-level and low-level signals are generated from output terminals 21a and 21b of control circuit 21 respectively, and the high-level signal is given to respective bases of Trs22 and 31, and meanwhile, the low-level signal is given to the base of Tr33, and Trs22, 31 and 33 become non-conductive. Trs34a and 34b become conductive in response to non-conduction of Tr33, the collector current of Tr31 becomes leakage current I2 and is flowed through Tr34a, and the collector current of Tr22 becomes leakage current I1 and is flowed to Tr34b according to the value of leakage current I2. Leakage current I1 is heardly flowed into resistance 24 and makes Tr23 non-conductive surely.
JP3486479A 1979-03-23 1979-03-23 Malfunction prevention circuit of transistor Pending JPS55127729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3486479A JPS55127729A (en) 1979-03-23 1979-03-23 Malfunction prevention circuit of transistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3486479A JPS55127729A (en) 1979-03-23 1979-03-23 Malfunction prevention circuit of transistor

Publications (1)

Publication Number Publication Date
JPS55127729A true JPS55127729A (en) 1980-10-02

Family

ID=12426025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3486479A Pending JPS55127729A (en) 1979-03-23 1979-03-23 Malfunction prevention circuit of transistor

Country Status (1)

Country Link
JP (1) JPS55127729A (en)

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