File:Superheterod_radio.JPG
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Summary
DescriptionSuperheterod radio.JPG |
English: A cheap transistor radio, a simple type of AM portable radio, with its back open to show parts. It uses a simple five-transistor superheterodyne circuit. Transistor radios are the most popular electronic communications devices in history, with billions manufactured in the 1960s and 1970s.
中文(简体):超外差收音机 |
Date | Taken on 11 July 2012 |
Source | Own work |
Author | Gisling |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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Annotations InfoField | This image is annotated: View the annotations at Commons |
167
53
114
655
1500
983
Ferrite loopstick antenna
981
439
272
261
1500
983
Speaker
643
328
242
227
1500
983
Tuning capacitor
386
368
64
69
1500
983
Transistor
399
617
64
64
1500
983
Transistor
598
565
62
64
1500
983
Transistor
887
407
49
56
1500
983
Transistor
866
552
69
69
1500
983
Transistor
435
45
251
234
1500
983
Volume control potentiometer
480
328
128
128
1500
983
IF transformer
394
480
116
120
1500
983
IF transformer
336
677
116
114
1500
983
IF transformer
585
651
161
167
1500
983
Audio transformer
834
649
161
169
1500
983
Audio transformer
1253
664
137
173
1500
983
Earphone jack
853
47
516
265
1500
983
Battery
Items portrayed in this file
depicts
11 July 2012
0.03333333333333333333 second
4.3
13 millimetre
100
image/jpeg
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 12:14, 11 July 2012 | 1,500 × 983 (364 KB) | Gisling |
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Metadata
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Camera manufacturer | Panasonic |
---|---|
Camera model | DMC-LS75 |
Author | Picasa |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/4.3 |
ISO speed rating | 100 |
Date and time of data generation | 06:58, 11 July 2012 |
Lens focal length | 13 mm |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Ver.1.0 |
File change date and time | 07:16, 11 July 2012 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 06:58, 11 July 2012 |
Meaning of each component |
|
Image compression mode | 2 |
Exposure bias | 0.33 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Fine weather |
Flash | Flash fired, compulsory flash firing |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 79 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Unique image ID | 5ef76d576ac4c52414045d662d8f048f |
IIM version | 4 |
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