JPS57152246A - Transmission and reception switching circuit of ultrasonic-wave transmitter and receiver - Google Patents

Transmission and reception switching circuit of ultrasonic-wave transmitter and receiver

Info

Publication number
JPS57152246A
JPS57152246A JP3759281A JP3759281A JPS57152246A JP S57152246 A JPS57152246 A JP S57152246A JP 3759281 A JP3759281 A JP 3759281A JP 3759281 A JP3759281 A JP 3759281A JP S57152246 A JPS57152246 A JP S57152246A
Authority
JP
Japan
Prior art keywords
voltage
diodes
transmitted signal
transmission
oscillators
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
Application number
JP3759281A
Other languages
Japanese (ja)
Other versions
JPS6034298B2 (en
Inventor
Kazuo Matsuda
Kazuya Seino
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.)
Japan Radio Co Ltd
Nihon Musen KK
Original Assignee
Japan Radio Co Ltd
Nihon Musen KK
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 Japan Radio Co Ltd, Nihon Musen KK filed Critical Japan Radio Co Ltd
Priority to JP3759281A priority Critical patent/JPS6034298B2/en
Publication of JPS57152246A publication Critical patent/JPS57152246A/en
Publication of JPS6034298B2 publication Critical patent/JPS6034298B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To transmit and receive a stable wide-band output with small-sized constitution by using a low-voltage power source by supplying a high-voltage transmitted signal to an oscillator by boosting a transmitted voltage during transmission, and outputting the received voltage from input and output terminals common to the transmission. CONSTITUTION:On the same core, primary and secondary coils L1 and L2 are provided, oscillators E1-E9 are connected, and diodes CR1-CR4 are further arranged. For the operation of a transmitter, the diodes CR1 and CR2 short-circuit because they are cut-off diodes having lower levels than a transmitted signal, so that the transmitted signal is applied to both the terminals of the coil L1. Those coils L1 and L2 are wound around the same core, the transmitted signal obtained by boosting a high voltage is supplied to the oscillators E1-E9. For the operation of a receiver, on the other hand, the diodes CR1-CR4 never conduct because the received voltages of the oscillators E1-E9 are very low, so the received voltage is developed between terminals 1 and 2 through the coil L2.
JP3759281A 1981-03-16 1981-03-16 Ultrasonic transducer transmitter/receiver switching circuit Expired JPS6034298B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3759281A JPS6034298B2 (en) 1981-03-16 1981-03-16 Ultrasonic transducer transmitter/receiver switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3759281A JPS6034298B2 (en) 1981-03-16 1981-03-16 Ultrasonic transducer transmitter/receiver switching circuit

Publications (2)

Publication Number Publication Date
JPS57152246A true JPS57152246A (en) 1982-09-20
JPS6034298B2 JPS6034298B2 (en) 1985-08-08

Family

ID=12501810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3759281A Expired JPS6034298B2 (en) 1981-03-16 1981-03-16 Ultrasonic transducer transmitter/receiver switching circuit

Country Status (1)

Country Link
JP (1) JPS6034298B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823505A (en) * 2016-03-21 2016-08-03 广东小天才科技有限公司 Method and device for detecting water entry of intelligent terminal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823505A (en) * 2016-03-21 2016-08-03 广东小天才科技有限公司 Method and device for detecting water entry of intelligent terminal

Also Published As

Publication number Publication date
JPS6034298B2 (en) 1985-08-08

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