JPS55104763A - Apparatus for measuring electric circuit - Google Patents
Apparatus for measuring electric circuitInfo
- Publication number
- JPS55104763A JPS55104763A JP6070478A JP6070478A JPS55104763A JP S55104763 A JPS55104763 A JP S55104763A JP 6070478 A JP6070478 A JP 6070478A JP 6070478 A JP6070478 A JP 6070478A JP S55104763 A JPS55104763 A JP S55104763A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- produces
- sound
- speaker
- pulse
- 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
Landscapes
- Indicating Measured Values (AREA)
- Measurement Of Current Or Voltage (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
PURPOSE: To eliminate notifying means and prevent in advance an accidental drive of an apparatus for measuring an electric circuit by so constructing the apparatus as to distinguish the electric state of a portion to be measured according to sound and enabling the approximate measurement of the apparatus body without movement of a sight line at all.
CONSTITUTION: A detecting circuit 2 having a detection pointer 1 detects the voltage level of a circuit to be measured to detect whether the electric state of the circuit is high or low level and whether the circuit produces single pulse or pulse train. When the circuit is, for example, high level, a detection signal is introduced to a NAND gate 8. Since the gate 8 is in open standby state with the output from an oscillator circuit 3 and the inhibit output from a monostable multivibrator 5 as a pulse expanding circuit, the circuit 8 is opened and a speaker 15 produces a sound of oscillating frequency f1 of the circuit 3. When the circuit is, for example, low level, the speaker 15 produces a sound of oscillating frequency f2 of an oscillator circuit 4. When the circuit produces a single pulse, the speaker produces a sound of frequency f1 as designated in Fig. A or B. When the circuit produces a pulse train, the speaker produces a sound of frequency f2 as designated by Fig. C. This apparatus may measure whether the circuit produces single pulse or pulse train by hearing the sound.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6070478A JPS55104763A (en) | 1978-05-22 | 1978-05-22 | Apparatus for measuring electric circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6070478A JPS55104763A (en) | 1978-05-22 | 1978-05-22 | Apparatus for measuring electric circuit |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3762571A Division JPS565938B1 (en) | 1970-12-11 | 1971-05-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55104763A true JPS55104763A (en) | 1980-08-11 |
JPS5650228B2 JPS5650228B2 (en) | 1981-11-27 |
Family
ID=13149933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6070478A Granted JPS55104763A (en) | 1978-05-22 | 1978-05-22 | Apparatus for measuring electric circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55104763A (en) |
-
1978
- 1978-05-22 JP JP6070478A patent/JPS55104763A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5650228B2 (en) | 1981-11-27 |
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