All posts by bihlo

YouTube, und interessante Favoriten aus dem Bereich Technik

This time, I’m not going to talk about a project or an “old equipment concept”, but would like to introduce some interesting users or their contributions from the YouTube portal. These are contributions from the field of computer, technology and science, which I personally like to look at.

First and foremost, I would like to mention the legend of modern computer history, which has fascinated me since my youth. The ComputerClub from WDR times with Wolfgang Rudolph and Wolfgang Back. The two moderators moderated the program Computerclub from the beginning of the 80’s to 2003 at Westdeutscher Rundfunk. In the topics, the two men are generally concerned with computers and peripherals, new developments in the field of electronics and present all sorts of things here. Many broadcast recordings are archived on YouTube, including by user janbras.

On 22 February 2003, the last broadcast was broadcast on WDR.

But the two protagonists have not given up the computer club and let him resurrect on July 24, 2007 on a German private broadcaster (NRW-TV).

However, the private broadcaster NRW-TV had to cease its operation in 2016 and so the program was Nr.186 recorded as the last in the studios of NRW.

But Wolfgang Rudolph has managed by fundraising to set up his own studio and now produces the CC2 from his private studio on his own.

In the background, a lot has changed, which confused the viewers and freaks a bit. Parallel to the broadcasts existed the page cczwei.de which was filled by both gentlemen. After 13.12.2016 suddenly a new page appeared. The new domain cc2.tv has been created. The now operates Rudolph alone. The domain cczwei.de continues to be operated by Mr. Back. He is assisted by Heinz Schmitz, who is now producing YouTube broadcasts with Mr. Back. Apparently, there were sufficient reasons for the gentlemen to part with years of community work. There never was an official explanation.

 

From the computer area, the guys from VirtualDimension report. They call their channel VD Hurrican and produce the formats: Virtual Worlds, Back in Time, Retroplay and On Site. The contributions are absolutely professional and mainly deal with home computers. With a lot of background information the old 8 and 16 Bit’er are presented here. Gameplay as well as fair reports and contributions from community events are also part of their repertoire. As an example here a link to the unboxing of an Amiga500 and its history. On the occasion of their 1000th subscriber on YouTube, they have published a 1000-subscriber special with a studio tour.

From the Australian continent, Dave Jones, also an inveterate technician, blogs. On his YouTube channel EEVblog, He also introduces electronic devices, explains their structure and operation. A special category in his channel are the so-called Mailbags. Here, Dave receives packages from people in the community who he opens in front of the camera and presents their content. This can be old computers and boards, or even new developments and prototypes of startups that are presented here.

 

A slightly different channel is that of an Englishman. He calls himself Photonicinduction and shows experiments with high performances. All sorts of appliances, such as vacuum cleaners, heating lamps, washing machines, loudspeakers, etc. are operated to the limit of their maximum performance data – and far beyond. The end of the device through destruction is the goal here.

 

 

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X-Mas 2016

Merry Christmas to the visitors of the blog!

Now it is already two years, in which I feed the “technology and retro blog” with contributions. Who would have thought that … By now some readers have strayed here and asked if I could introduce one or the other device here. Of course I will try to realize it if possible. Unfortunately, the rubric with the computers of the 80s is still empty. Here I still lack the “thread”, as I should process the whole – it floats me to every device before a small video in which the devices are to be shown in the living state. If someone has ideas for that … like.

I would like to say a big thank you to my colleague Mario Wehr, who provides me with the WordPress environment and thus offers excellent service!

In this sense: Merry Christmas and happy holidays!

 

 

 

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WordPress to Word.doc

If you wanted to save your Blogposts from WordPress, you will definitely know the XML export function in the Dashboard of WordPress itself. Here you can create and save an XML file in the menu “Tools” under “Export data” , This XML file can be used in a – for example – server error again to create the blog.

But what to do if you want to save your blog content in a Word file, or as a PDF, or even print? There are several possibilities to realize this. I will briefly list these variants here.

The latter tool I find personally very convenient and convenient, since it is very easy here to export his entire blog, including images in a Word document and postprocessing. All you have to do is export the XML file from wordpress.

converter0
chooese XML-file

After specifying the XML file, the blog posts are displayed directly in a list. Now you can choose which blog post should be converted and whether it should be a Word or PDF document.

 

converter1
window with exportable posts

Now you can start exporting …

converter2Depending on the number of posts and their length, the corresponding document is quickly available and can be edited as needed …

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Wickie, Slime & Paiper

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ISBN 3-205-98989-9

It does not have anything directly to do with technology, but perhaps fits under the title “retro” as a post very well in the blog: A book for browsing memories of the 70s and 80s is the band “Wickie, Slime and Paiper” by Susanne Pauser and Wolfgang Ritschl. The book was published in 1999 by Böhler-Verlag Wien. It is a printed summary of an online forum as a souvenir album for the children of the seventies. It mentions numerous products and fashions, television and radio programs that were up to date at the time and is discussed and commented by the protagonists of the forum, themselves children of the seventies. The print is accompanied by scanned images of posters, catalogs, advertising slogans.

 

wsup2
Eskimo  ice-pricesheet(prices in Austrian Schilling 😉 )

 

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Beware of electrical goods from the Far East

DSC_2196The other day I noticed with a cold-device connection cable that the cable sheath has come loose in the area of ​​the strain relief. The wires came out. By itself, this is nothing special, if not here, apart from the unusual colors, the unusually small diameter of the wires in the eye would sting.

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left: cable without CE marking right: standard cable
DSC_2198
Plug without any test marks.

Normally, such a jacket cable with 16A / 250V and a CE mark is marked on the plug. The cross section of the stranded wires is 1.5mm².  The cable here on the photo but an indication of 10A / 250V was printed and NO CE sign available. The strands have a cross section of less than 0.5mm² !! Who uses such a cable and for example operates a heater with it, then may not be surprised if a quick fire breaks out … Unfortunately, I can not understand with what device I got this cable included. But it does not conform to the valid standards and represents a danger in the enterprise. In any case: Keep away from such products!

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Walkman City Bummler from the 80s

IMG_3810From the early 1980s comes the “City Bummler” a mobile, portable cassette player – in short a Walkman. At that time, I received it as a Christmas present during my middle school years. The special feature of this device was a built-in microphone and two headphone ports. So you could listen to music in pairs and if you wanted to say something without having to remove the headphones (or to reduce the volume), so you had to press only  an orange colored button and the intercom was active. The device was sold as a low-priced “replica” version of the first Walkman from Sony, the TPS-L2 which came on July 1, 1979 on the market. The citybummler was distributed by UNIVERSUM via the source mailer.

IMG_3812
City Bummler with a self made coverplate after the original got broken

The device was delivered in a box with headphones, cassette pocket and carrying case with strap. For operation, three AA size 1.5V batteries were needed. The volume control is carried out with two separate sliders, so that each channel can be controlled separately. Unfortunately, the city loafer has not passed the last 35 years quite unscathed. Over time, the cassette cover was broken off, which I then replaced in my youth with a homemade tinplate lid. At some point I did not like the case color and I painted the device green. (or I just had green paint at hand). At least the “loafer” still exists and it works too.

IMG_3814I was then on the Web in search of a well-preserved, in the original state city loafer. However, the offer is extremely low and the few offers on online auction houses are not interesting because of the immense shipping costs.

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Fellow FE-1

But a compromise and at the same time a new piece in the collection is the FELLOW FE-1 Walkman. I got the most cheap and fully functional on a second-hand stock market.

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left: Fellow FE-1, right: City-Bummler
IMG_3817
both devices in comparison

The Fellow is also a clone of the Sony TPS-L2. It differs essentially in the arrangement of the keys of the drive.

 

 

 

 

 

IMG_3811IMG_3809IMG_3808IMG_3821 IMG_3812 IMG_3814 IMG_3819

 

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analogue multimeter – Goerz Minitest

Goerz Minitest
Goerz Minitest

The Goerz multimeter, model: Minitest FE5101 dates from 1969 and was manufactured by the company Goerz Elektro Ges.m.b.H from Vienna.

Introductory sentence from the operating instructions: “It is a multi-measuring instrument, which is particularly suitable for service work in the field of news and radio technology and electronics due to its small dimensions and low weight as a pocket instrument It allows the measurement of: equal and AC voltages, DC and AC, resistance, capacitance and frequency. “

The internal resistance is 20kOhm for DC and 4kOhm for AC. The achieved accuracy is 2.5%

IMAG1503
inside view

As overload protection, the moving-coil meter is equipped with antiparallel-connected diodes.

In this model, the measuring ranges are not to be selected by a selector switch, but each individual measuring range is designed as a socket on the device. The sockets themselves are suitable for 2mm banana plugs. The power supply for the resistance measurement comes from a 3V dry cell battery (type 2R10 duplex battery).

 

IMAG1497
scale

For the measurement of the capacitance with this device an external voltage is necessary, because here no own alternating voltage generator is installed. This said external voltage is the 50 Hz mains voltage which is connected to the device via its own supply cable. So a capacity measurement up to 500nF can be achieved. Measurements greater than 0.5uF are no longer possible due to the low measuring frequency. Goerz supplied a polystyrene transport case for storage and transport.

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analogue multimeter – Unigor 3n

Unigor 3n
Unigor 3n

From the years from 1964 comes the analogue multimeter Unigor 3n from Norma, respectively Goerz-Metrawatt. It was characterized by the large measuring range of 52 measuring ranges, all of which can be selected with just one selector switch. The measuring mode and polarity reversal is realized with a push-button switch. All measurements (except the 10A range) are possible on just one terminal pair.

The measuring mechanism is a “clamping band measuring unit” with a very good vibration resistance and low self-consumption.

The internal resistance for voltage measurements is a maximum of 4MOhm in the highest measuring range (see photo technical data). The voltage drop in current measurements is given as 12mV in the 120uA range and 120mV in the 30A range. The measuring accuracy is 1% for DC and 1.5% for AC measuring ranges.

Like the Unigor 6e, the 3n model is also equipped with various safety features.

The power supply of the multimeter takes over a 1.5V mono cell.

 

Technische Daten
technical specification

 

 

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The steam engine

IMAG0062
Wilesco steamengine

The following piece is about 40 years old model steam engine from the manufacturer Wilesco. (Thanks to Manfred for the loan for the media preparation). The model consists of a highly polished and nickel-plated brass kettle, which is built into an old copper-colored boiler house with brick pattern. Heating is done with a dry spirit burner located under the boiler. The pressure vessel has a spring safety valve and a “Domdampfpfeife”. The pressure line is led to a single-acting pendulum cylinder, which in turn drives the crank and the flywheel on it via a connecting rod.Trockenspiritusbrenner.

IMAG0064The entire model is mounted on an iron plate. In order to be able to drive mechanical models with the machine, a pulley is mounted on the shaft of the flywheel. Since the model has been stored in a carton for the past forty years, a few small jobs have been done. Piston and crank were stiff and had to be cleaned and re-oiled. The crank was a bit out of alignment with the flywheel shaft.

IMAG0057The seals of the “Domdampfpfeife” and the pressure relief valve were also brittle and hardened and were replaced. Here I was able to use a suitable punching tool made of “new” old gasket material to knock out and insert two new gaskets. Now the model was a little bit freed from the dust of the last years and cleaned and a start attempt was nothing in the way.

Now the spirit burner could be filled with a small piece of dry spirit, which was probably even older than the machine itself. At least the original box looks like this:

IMAG0054 IMAG0055

 

Invalid Displayed Gallery

 

 

 

 

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science kits PHILIPS EE 2000 series

EE2050
EE2050

Another electronics kit from my youth is the Philips EE series. It dates approximately to the years 1976-1979. The box presented here is the EE2050. Unfortunately, this is no longer the original that I recorded back then, but a version bought on eBay. But this is a real collector’s item, because the box has never been recorded.

The boxes (EE2003 / 41/50/51/52) under my custody have unfortunately not survived the years. Since the modular system was designed in such a way that all components were “free”, ie not riveted to any sockets (just as they were also used in industry), I always used them. If I needed a resistor or capacitor quickly, the kit had to serve as a “donor”.

Befestigung des Bauteils auf der Grundplatte
Fixing the component on the base plate

The concept of the modular system: It consists of a perforated plastic base plate through which a hairpin spring is inserted. This hairpin spring in turn holds a spiral spring. Now, between the hairpin spring and the upper end of the coil spring, the connection wire of the component can be clamped.

IMG_3779
Transistor on printed circuit board

The components themselves are contained in the box as they are also commercially available. An exception here are only the transistors and transformers. They are mounted on a small printed circuit board, which facilitates assembly and also protects the component itself from mechanical stress.

In the final stage, the box consists of two bolted base plates, which in turn are bolted to a control panel. In this media console then turn capacitors, rotary potentiometers, buttons, bulbs and a speaker place. The number of experiments to build is also huge. The manuals are very well structured. They describe the basics of DC technology, as well as the operation of the circuits.

Here is an excerpt from the inscription of the electronics box. Note the gender-oriented spelling 🙂

 

Wonderful world of electronics – a mysterious world that every boy wants to get to know and understand. This electronic kit gives him the opportunity to easily gather his own insights in this field. The box contains a richly illustrated instruction book and over 150 items – e.g. 10 resistors, 5 capacitors, photocell and transistors. Thanks to the clamping system, the young electronics builder can assemble these parts completely independently and without prior knowledge to the following functional devices:

Burglar Alarm Systems, Amplifiers, Automatic Parking Lights, Humidity Indicators, Acoustic Relays, Morse Exercise Machines, Brightness Controls, Timers, Others – a total of 21 electronic devices and many interesting circuits.

With additional boxes the possibilities extend to the MW radio with loudspeaker. Proper engineers work with the same parts: all the boxes in the Philips Elektronik series are equipped with the most modern parts of today’s electronics in their original form.

 

IMG_3778IMG_3777IMG_3776IMG_3784

 

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