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Another work in progress: My Taig metal lathe and workbench.
Not much space :(
I still need to find a place to fit a CNC router...
I was wondering why this camera is so bulky - no flex circuits. Five circuit boards are stacked on top of each other! The connectors between each layer are a possible point of failure (as Apple learned with the Apple ]|[).
■ 사용자 중심의 디자인 인정받아 ‘최고 혁신상’ 수상
□ 가벼운 무게와 얇은 두께로 휴대성과 심미성 인정받아
□ 그램 시리즈만의 차별화된 편의성도 호평
■ ‘이지 TV’와 ‘엑스 붐’도 각각 최고제품상과 특별상 수상
■ LG전자 디자인센터장 노창호 상무, “앞으로도 LG만의 혁신적인 가치를 소비자들에게 지속적으로 전달할 것”
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.
Yay! My laser cut plastic from Ponoko arrived and like the best ikea flatpack it assembled together and all the parts actually fit!
It's six rectangles with slots in the top and bottom and ridges on the side, front and back walls. It doesn't hold itself together very well if you aren't careful, though a bit of glue would soon fix that. For now I'm leaving it as it is.
The main control PCB goes on the outside back, where you can easily access the buttons to change the time. Power supply is inside on one side wall, and the two nixie driver boards themselves are on the bottom. Amazingly, my laser cut holes line up with the holes in the PCBs and I am able to screw everything into place! Hurrah!
■27 일 LG 시그니처 냉장고 신제품 출시
□ LG 시그니처 냉장고와 얼음정수기를 결합해 공간 효율성과 사용편의성 강화
□ 3단계 안심필터로 깨끗한 물과 얼음 제공
□ LG 시그니처 냉장고의 혁신적인 기능과 정제된 디자인 계승
■ 超프리미엄 품격에 브랜드에 걸맞는 차별화된 서비스 제공
□ 전담인력이 업계 최고 수준의 케어서비스로 사후 관리
■ LG전자 냉장고사업부장 박영일 부사장 “최고의 성능과 디자인을 갖춘 LG 시그니처 냉장고가 超프리미엄의 새로운 경험을 제공할 것”이라고 강조
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.
Welcome to my images in istockphoto: View My Portfolio
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Please see some similar pictures from my portfolio: Keyboard concept
For more: Pizza; isolated objects; industry-manufacture; Business Portraits; Concepts and Ideas; Speed & Driving; Technology; Retail Sign & Label; Leather & Fabric Backgrounds; Blurry light backgrounds; Flower & Backgrounds ; Business & Finance
All images copyrighted by Alubalish.
■ 올 최대 전략 스마트폰 28일(한국시각 기준) 전 세계 동시 공개
□ 세계 6개 도시에서 24시간 이내 행사 완료
□ 28일 한국 출시 이어 세계 170여 통신사 순차 공급 예정
■ ‘Simple is the New Smart’ 컨셉트 반영
□ 사용자 경험 최우선의 G시리즈 철학 계승
■ 글로벌 런칭 첫 쿼드HD 스마트폰
□ 쿼드HD(2,560x1,440) IPS 디스플레이 탑재
□ 538ppi 초고해상도 구현… HD의 4배, 풀HD의 2배
■ 레이저 오토 포커스로 빠르게 초점 잡는 카메라
□ 후면에서 레이저 빔 쏘아 피사체와의 거리를 초고속으로 측정
□ 어두운 곳에서도 선명하게 찍히는 전면 카메라
□ 오디오까지 배려한 비디오 레코딩
■ 심플함을 담은 입체 디자인
□ 매끈한 일체감 느껴지는 전면 디자인에 심플한 GUI 적용
□ 후면엔 인체공학적 곡률 채택해 한 손에 들어오는 그립감 구현
□ 메탈릭 스킨 후면 커버, 더 편해진 후면키 채택
■ 사용자를 이해하는 진정한 스마트 UX
□ 빅데이터 분석해 오타 줄여주는 ‘스마트 키보드’
□ 사용 패턴 기억해 맞춤형 정보 제공하는 ‘스마트 알림이’
□ 노크 코드, 컨텐츠 잠금, 킬스위치로 강화된 ‘스마트 시큐리티’
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.
well not really, i sure know the F-16 much, MUCH better than this stuff!
i scored some really old equipment (oscilloscope and pulse generator), but i have no idea how to use it. cant even produce a sine wave as-is. :(
any ideas are welcome, of course.
well, at least those things smell strongly of electronics when in operation. so yeah, i think i'll just go to sleep while smelling their scent of nerdyness for now. =)
ps: will reply to other stuff in the next few days.
Former Caldor/Kmart
Target Salem MA
- Opened July 23, 2003
- Last New England Target with P01
- Target Greatland Style Layout
- P04 Prototype Exterior
- 97,000 Square Feet
Made right here in Ann Arbor. Purchased at the Kiwanis Thrift Sale. A small pawl in the gear block assembly was broken but I found a super junker at Antelope Antiques and Coins, removed the good pawl, and replaced it.
I used this repair manual: www.arguscg.org/manuals/c3/army-repair/
According to the Argus Collector's Group the camera was made approximately 1940: photo.net/users/philster/Argus/DatingYourArgus.htm#C3A
Electronics Hobby
From Wikipedia, the free encyclopedia
Jump to: navigation, search
"Power amplifier" redirects here. It is not to be confused with RF power amplifier.
Mission Cyrus 1 Hi Fi integrated audio amplifier (1984) [1]
An audio power amplifier is an electronic amplifier that amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain.
The preceding stages in such a chain are low power audio amplifiers which perform tasks like pre-amplification, equalization, tone control, mixing/effects, or audio sources like record players, CD players, and cassette players. Most audio power amplifiers require these low-level inputs to adhere to line levels.
While the input signal to an audio power amplifier may measure only a few hundred microwatts, its output may be tens, hundreds, or thousands of watts
en.wikipedia.org/wiki/Audio_power_amplifier
History[edit]
Three audio power amplifiers
The audio amplifier was invented in 1909 by Lee De Forest when he invented the triode vacuum tube. The triode was a three terminal device with a control grid that can modulate the flow of electrons from the filament to the plate. The triode vacuum amplifier was used to make the first AM radio.[2]
Early audio power amplifiers were based on vacuum tubes (also known as valves), and some of these achieved notably high quality (e.g., the Williamson amplifier of 1947-9). Most modern audio amplifiers are based on solid state devices (transistors such as BJTs, FETs and MOSFETs), but there are still some who prefer tube-based amplifiers, and the valve sound. Audio power amplifiers based on transistors became practical with the wide availability of inexpensive transistors in the late 1960s.
Design parameters[edit]
Key design parameters for audio power amplifiers are frequency response, gain, noise, and distortion. These are interdependent; increasing gain often leads to undesirable increases in noise and distortion. While negative feedback actually reduces the gain, it also reduces distortion. Most audio amplifiers are linear amplifiers operating in class AB.
Further developments in amplifier design[edit]
For some years following the introduction of solid state amplifiers, their perceived sound did not have the excellent audio quality of the best valve amplifiers (see valve audio amplifier). This led audiophiles to believe that valve sound had an intrinsic quality due to the vacuum tube technology itself. In 1972, Matti Otala demonstrated the origin of a previously unobserved form of distortion: transient intermodulation distortion (TIM), also called slew rate distortion. TIM distortion was found to occur during very rapid increases in amplifier output voltage.[3] TIM did not appear at steady state sine tone measurements, helping to hide it from design engineers prior to 1972. Problems with TIM distortion stem from reduced open loop frequency response of solid state amplifiers. Further works of Otala and other authors found the solution for TIM distortion, including increasing slew rate, decreasing preamp frequency bandwidth, and the insertion of a lag compensation circuit in the input stage of the amplifier.[4][5][6] In high quality modern amplifiers the open loop response is at least 20 kHz, canceling TIM distortion. However, TIM distortion is still present in most low price home quality power amplifiers.[citation needed]
The next step in advanced design was the Baxandall Theorem, created by Peter Baxandall in England.[7] This theorem introduced the concept of comparing the ratio between the input distortion and the output distortion of an amplifier. This new idea helped audio design engineers to better evaluate the distortion processes within an amplifier.
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From my latest delivery of stuff. The gauge is great, but the box around it has been over-tinkered, so I will strip the thing down for parts and only keep the gauge for collection purpose.
I found these HF kits for old log phones for 1€ each. Bought the two complete ones I could find. Lots of useful things in the mounting kit and a neat aluminium box with this inside. Mostly I was interested in that box. Those are horribly expensive. But there's loads of stuff there and essentially abandoned, so I decided I could do a fair job recycling it.
Handheld and sunlit. I really should make a rig for this type of shots. And that lightbox/tent.
■ 올 최대 전략 스마트폰 28일(한국시각 기준) 전 세계 동시 공개
□ 세계 6개 도시에서 24시간 이내 행사 완료
□ 28일 한국 출시 이어 세계 170여 통신사 순차 공급 예정
■ ‘Simple is the New Smart’ 컨셉트 반영
□ 사용자 경험 최우선의 G시리즈 철학 계승
■ 글로벌 런칭 첫 쿼드HD 스마트폰
□ 쿼드HD(2,560x1,440) IPS 디스플레이 탑재
□ 538ppi 초고해상도 구현… HD의 4배, 풀HD의 2배
■ 레이저 오토 포커스로 빠르게 초점 잡는 카메라
□ 후면에서 레이저 빔 쏘아 피사체와의 거리를 초고속으로 측정
□ 어두운 곳에서도 선명하게 찍히는 전면 카메라
□ 오디오까지 배려한 비디오 레코딩
■ 심플함을 담은 입체 디자인
□ 매끈한 일체감 느껴지는 전면 디자인에 심플한 GUI 적용
□ 후면엔 인체공학적 곡률 채택해 한 손에 들어오는 그립감 구현
□ 메탈릭 스킨 후면 커버, 더 편해진 후면키 채택
■ 사용자를 이해하는 진정한 스마트 UX
□ 빅데이터 분석해 오타 줄여주는 ‘스마트 키보드’
□ 사용 패턴 기억해 맞춤형 정보 제공하는 ‘스마트 알림이’
□ 노크 코드, 컨텐츠 잠금, 킬스위치로 강화된 ‘스마트 시큐리티’
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.