Tehnik Service

Dr.Avramovski Petar Lab’s

TehnikService — Thu, 26 Jan 2012 21:25:00 +0000

Debbie written to us that she loves the picture of Petar Lab and she will use it as the backround for a training module on ‘Basics of Electronics’. Dr.Avramovski Petar immediately sent new images for the readers to the Tehnik Service and of course for Debbie. Old post of electronic workbench is here .

I love the picture of Dr. Avramovski Petar lab’s, and would love to use it as
the background for a training module on ‘Basics of Electronics’. Only thing is I
need a picture of a litte bit more of the room, like the rest of the desk and
floor. So wanted to get permission to use the picture and if so, would be
possible to get that pic that showed the entire desk from top to bottom? Thanks
so much.

Temperature controlled soldering gun with bar graph indication

TehnikService — Thu, 26 Jan 2012 18:52:00 +0000

This soldering station is designed to control the temperature of soldering gun Solomon SL-1 and other similar soldering devices with integrated thermocouple. DC voltage generated by thermocouple is amplified by operation amplifier CA3140.
The precise regulation and excellent small hysteresis of temperature is obtained by voltage stabiliser LM723M (military packaging). LM723M contains an embedded temperature stable reference voltage source with its own of constant current.
Visual indication of SET or READ temperature is realized by LM3914 and 10 LED bar graph display to represent of temperature range from 50 to 500 degree Celsius.
The electric circuit of soldering iron heater is optical insulated from control electronic circuit by CNY17 optocoupler.
However, this is an accurate device for regulation of your soldering iron and precise indication of the temperature.
I constructed it and I did it. Built it and you, do not wait.
8 years of continuous operation without a single malfunction of the device is sufficient confirmation of its quality.

The complete instruction, 3 PCB, schematic diagram et all you can find in EMITER 12/2004, follow the link: http://www.emiter.com.mk/poveke.php?napis_id=1582

Author: Primarius D-r Petar Avramovski, MD.

DesignSpark chipKIT™ Challenge

TehnikService — Wed, 25 Jan 2012 09:24:23 +0000

Join DesignSpark’s chipKIT™ Challenge and turn your hot idea into a cool solution! Participants in this competition must use Microchip’s chipKIT™ Max32™ development board to design an energy-efficient and eco-friendly device. Achieve the most energy efficient solution and you could win share of US Dollars $10,000 cash! Maximize your design power while reducing your environmental and energy footprint.

Registration and further information can be found at: www.chipkitchallenge.com

EasyPIC PRO v7 is released!

TehnikService — Tue, 24 Jan 2012 22:18:19 +0000

EasyPIC PRO™ v7 is a full-featured development board for high pin-count 8-bit PIC® microntrollers. It contains many on-board modules necessary for development variety of applications, including graphics, Ethernet, USB, Temperature measurement and other. On-board mikroProg™ programmer and debugger supports nearly 100 PIC® microcontrollers. Board is delivered with MCU socket containing PIC18F87K22 microntroller.

What makes this board so unique is that it comes with powerful on-board mikroProg programmer and In-Circuit Debugger, capable of programming almost 100 microcontrollers. This makes development with EasyPIC PRO™ v7 a whole new experience. Whether you are just a beginner, or a well-trained professional, this remarkable feature is an irreplaceable advantage.

Source: Mikroelektronika

Simple Function Generator

TehnikService — Sun, 22 Jan 2012 22:19:38 +0000

Generator functions, or forms of waves, such oscillators are producing alternating voltages of different shape which correspond in appearance to a mathematical function.
They can be sine, rectangular, triangular, in the form of stairs, etc.. Applied in analog and digital electronics, the measurement and experimental techniques, for educational or professional purposes and as a laboratory device are always welcome in your electronics lab.
The text that follows we suggest a project for a very simple generator functions realized by IC CD4011.

No-electronics hobbyists (the readers of Emiter) who does not wish to have or who did not indicate a need for generating functions in his laboratory for electronics.
My old desire – to build the generator functions with Intersil integrated function generator ICL8038 – not true.
This specialized integrated circuit for that purpose, back in 1984, it was quite expensive and hard to find.
So I decided to build a function generator with conventional CMOS integrated circuit that is popular, cheap and easily available, the circuit CD4011. The device successfully and works well and I was benefited countless times in my elektronics practice.

Author: Primarius D-r Petar Avramovski MD,

-writer to magazine Emiter.
The complete article you can read on the pages of the Emiter 01/2012:
Follow the link: http://www.emiter.com.mk/poveke.php?napis_id=3910

Tour of Arduino manufacturing

TehnikService — Sun, 15 Jan 2012 23:41:56 +0000

Adafruit did a tour of the Arduino factory in beautiful Torino, Italy. They took many photos and videos you can see here. Thanks to adafruit for sharing this beautiful pictures.

LED candle for Christmas tree

TehnikService — Mon, 26 Dec 2011 19:28:51 +0000

The small electronics with a few transistors and a few passive components will revive a dozen of small LED sparks
deployed in the shape of the flame of the Christmas tree candle .
Failed attempt to blow off the flame, like a birthday cake, now become reality. Accumulated air in the children’s swollen cheeks
make magic explosive “puff” and when “flames” from the candle out gradually, children eyes shine with delight and curiosity:
How is that possible?
A small microphone which is placed at the bottom of the pcb under the led diodes,
it converts sound pressure into voltage and the serial transistor switch off.

Author: Primarius D-r Petar Avramovski, writer to magazine Emiter.
The complete article you can read on the pages of the Emiter 12/2011.

Folow the link: http://www.emiter.com.mk/poveke.php?napis_id=3891

VGA to VIDEO Composite converter

TehnikService — Mon, 19 Dec 2011 21:56:20 +0000

If you want to connect your PC to your house cinema, built VGA to VIDEO Converter.
The device is suitable for watching movies, performing video presentations and advertisements from a computer
that does not have video composite output signal.
Conversion is a stable, high resolution and high image quality in terms of brightness, contrast and saturation of colors.
Most sophisticated solution for converting VGA signal into composite video signal is application of the integrated circuit AD724.
Column is the product of electronic company Analog Devices, referred to as RGB to NTSC / PAL Encoder.
AD724 is basically an encoder that converts red (R), green (G) and blue (B) component of the signal
in their respective color signals corresponding to light (luminance) and color (chrominance) in accordance
with prescribed norms and NTSC/PAL standards.
The existing VGA to video converter in nothing behind commercial video cards posed a PC slot in personal computers
to provide an output video composite signal.
Given the fact that the cost of integrated circuit AD724 is only 6-7 dollars, then you win with quality / price ratio.

Author: Primarius D-r Petar Avramovski, writer to magazine Emiter.
The complete article you can read the pages of the Emiter 11/2011,

follow the link:
http://www.emiter.com.mk/poveke.php?napis_id=3863

Automotive Led Timing Strobe

TehnikService — Sat, 10 Dec 2011 20:15:47 +0000

Most older engines, and many newer ones, have timing marks in the form of a line marked on the rim of the vibration damper.
Some engines in front-wheel drive vehicles have timing marks on the flywheel. A pointer is attached to the timing cover.
When the mark is exactly under the pointer, the engine is ready to fire number one cylinder.
The spark will occur with the rotor pointing to the number one cap terminal.
The timing is generally set by using a strobe tamp, which is a light that is operated by high voltage surges from the spark plug wire.
The strobe lamp usually referred to simply as a timing light.

A useful timing strobe can be constructed using 9 high-brightness LEDs and a few common components: 2 monostable (CD4098), 1 double operation amplifier (CA3240E)
and 3 transistors.
Ignition pulses from the number 1 cylinder high-tension lead are used to trigger the circuit via a home-made inductive pickup.

Author: Primarius D-r Petar Avramovski, writer to magazine Emiter.
The complete article you can read the pages of the Emiter 11/2011

Happy 4th Birthday Tehnik Service

TehnikService — Sat, 26 Nov 2011 09:08:51 +0000

Happy Birthday Tehnik Service!

Today, we make fours years since we began this page Tehnik Service. Thank you for helping this page to continue to grow!Enjoy…