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Wednesday, June 12, 2019

Hitachi - Engineering and Technologies

Hitachi is a highly diversified company with products and solutions in High Functional Materials & Components, Power Systems, Electronic Systems & Equipment, Automotive Systems, Digital Media...

Hitachi - Engineering and Technologies

Hitachi was founded in 1910 by electrical engineer Namihei Odaira. The company's first product was Japan's first 5-horsepower electric induction motor, initially developed for use in copper mining. Odaira's company soon became the domestic leader in electric motors and electric power industry infrastructure

Hitachi J100 adjustable and Variable frequency drive

Hitachi J100 adjustable and Variable frequency drive. Photographed by C J Cowie

Hitachi at Wikipedia 

Hitachi has contributed immensely to semiconductor and electronic manufacturing technologies.
  • 1958 Completed six-transistor miniature portable radio
  • 1959 Completed electronic computers based on transistors
  • 1966 Developed LTP processing technique for silicon transistors
  • 1978 Experimental color camera with solid-state miniature image device developed
Hitachi History

1976 Hitachi portable VTR, for Sony 1" type C; the source and take-up reels are stacked for compactness.

HITACHI 1 Zoll-C-Maschine - Video tape recorder

HITACHI 1 Zoll-C-Maschine - Video tape recorder

Monday, June 03, 2019

Intersil Hot Ideas 1983 Mixed CMOS Revolution

These helped me build Intelligent Instruments in the 80s. Intersil was with GE earlier, innovators of   advanced CMOS before anybody else. They made the smartest chips when the Microprocessors were being examined Skeptically by engineers. (At that time Microprocessors needed many support chips and consumed huge power only later CMOS uC came).

Intersil Hot Ideas - 1983

Intersil Hot Ideas - 1983

Today i found out that another company of that time called Datel is back, it was first a part of GE like Intersil then went to Murata now after decades it is back home.

"Datel was established in 1970 and has been a long time leader in providing high precision data acquisition components, including data converters, power supplies, DC-DC converters, and digital panel meters. "

Alternate Energy Plans by Lee Bell

At the PackRat WorkShop Lee Bell has archived Power-Energy Ideas, Mechanical Howto and Robot Designs too. A Practical Man, His drawings are a language by itself. He has created a useful resource which will keep a DIY Enthusiast busy for many months.

Alternate Energy Plans by Lee Bell

"I already had a marine deep cycle type battery and an alternator that someone had traded me a while back in exchange for a 1hp dc treadmill motor. He was building a windmill and the car alt needed too many rpm's for what he wanted to do. I think it's a standard GM type." - Lee Bell

Alternate Energy Plans by Lee Bell

delabs Notes

Alternate Energy, storing and managing your own small power source, are an invaluable asset for Home or Small Business.

Depending on oneself, not only develops skills but also keeps you in form always. Building an energy source cost-effectively, requires you to put in a lot of learning and building efforts.That itself may become your future Small Business

Remember Fossil Fuels are Running out fast, Only Internet Communications and Alternative Energy will keep Business Blooming.

The lifestyle has to change, The future Generations are going to face the Heat, or is it Bitter Cold ! Even Freezing ?

Coal and Steel with Steam brought about the First Industrial Boom. Then Oil created unprecedented Magic, the Second Technological Revolution. This will not last long. If only Rover found Oil in Mars, this post was not needed.

Friday, May 03, 2019

Engineering Poetry and Heuristics

Knowledge comes in Handy at every part of your Life. Entertainment should be Edutainment. Here is a collection of comments and blurbs i wrote around 2012 - delabs

Verify Again and Again

After doing something, Verify, ask a friend to crosscheck, verify again.



Engineering Poetry and Heuristics

Wait there is more ...

Then ask somebody who does not like you so much, to check or test it and offer critical comments.

delabs design service - Circuit and product design


Differential Amplifier - Op-Amp Designs

A very simple one op-amp diff amp. This amplifies the difference between two inputs Vp and Vn the low impedance of this configuration is a drawback, but can be used in analog computing. Optimum VCC VDD can be +12/-12. AC signals common to Vp and Vn are canceled by this configuration.

Differential Amplifier - Op-Amp Circuits

Differential Amplifier - Op-Amp Designs

Use a capacitor like 10nF plastic from pin 2 to 3 or across R2 to make circuit stable. For AC applications use LF351 TLO71 as they have good slew rate and also are FET inputs. For AC applications use a capacitor (1uF) in series with Ri to block DC Components.

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