XR2206 Project with Plastic Case

 XR2206 Project with Plastic Case.

Finally I found some time to install my XR2206 Function Generator Kit in plastic enclosure, so I want to share some photos of the project. The kit of XR2206 you already have seen, but if somebody interested again please follow:

XR2206 DIY Kit

For project box I have chosen my small black enclosure "Plastic Project Box" Made of ABS, really easy to drill material. With internal dimensions of  L x W x H 95 x 84 x 59 mm. Has removable front and back panel.

Here is the finished project before I close the cover. I used Rotary Switch limited to 4 position. Actually you can adjust the switch to 12 position, but in this project I only need 4 position for selecting timing capacitors. The front panel has also Sine/Triangle switch and 3 rotary potentiometers for controlling amplitude and frequency (coarse and fine adjust).

The back panel has 2 BNC Female Panel sockets for frequency output. One for square wave and one for sine/triangle wave. Power jack is 2.1mm standard jack that feet any AC/DC adapter. I also added one 470uF 50V filter capacitor for possible "noisy" power supply and indication 3mm diode with 4.7K resistor.That's all!

Nice and simple project that I can use in my home lab. Now I need find a way to do some trig stickers labels for function knobs.

 

New revision of Cap.Meter kit will be available soon

Prototype of the new revision of High Resolution Cap Meter

New revision is on the way to manufacturing soon. There is the prototype of High Resolution Cap Meter by Roman Black. Second edition of the DIY Kit has several improvements thanks to suggestions of our customers. 

So, whats is new?

• On/Off Power button
• Led indication of the supply voltage
• Trimmer for manual calibration
• Detachable LCD display

In addition, there is new compact design of the pcb. Dimensions of the board now is 81x47 mm. The previous version has 85x55 mm pcb. When the new revision will be available for sell, I'll inform about it on the main page of the store. Hope you'll like it!

"Priority Mail 24" for Israeli Customers

New Delivery Method for Israeli Customers - "Priority Mail 24"

Now all small volume orders with total weight up to 100 gram will be sent with Priority Mail 24. This service of Israel Post allow next business day delivery for really low price. The service available only for Israel residents. Tracking information for "Mail 24" unfortunately is not supported, but the new method will safe your time and money, especially  when you need to order just several components and do not want to overpay for the delivery. We hope you'll enjoy it.

 Take note, allowed package for Priority Mail 24 is envelope only.

All orders with total weight more than 100 gram or with volume bigger than envelope is still will be sent with Registered Mail with tracking, like it was before.

MikroBasic Code Example for PIC16F628A and LCD 16x2

MikroBasic Code Example for PIC16F628A and LCD 16x2

Function Generator DIY Kit 20Hz - 100KHz XR2206

Function Generator DIY Kit 20Hz - 100KHz

XR2206

Review of XR2206 Function Generator DIY Kit 

Function generator is an integral part of any electronic lab. This test equipment used to generate different types of electrical waveforms: usually sine, triangle, sawtooth and square waves. More information about function generators can be found on Wikipedia. 

Some Integrated Circuits was designed to generate waveforms and it possible to build your own diy function generator project based on this type of IC. One of this chips is XR2206 by EXAR. 

XR2206 is monolithic function generator IC with excellent temperature stability 20ppm/C, wide sweep range, low sine wave distortion and other features. 

Our diy function generator kit has all components to build a simple diy project:

All components is carefully packed with different suitable bags:

The PCB board is double side with green soldermask and white silkscreen for easy parts installation. The board is high quality manufactured with through pads and HASL.

The diy function generator kit can produce sine, triangle and square waves from 20Hz to 100KHz in 4 ranges with fine adjust. It can be powered from 12V DC power supply and consume 20mA current. 

Technical specifications:

Sine:

Amplitude: 0.05 - 2V AC Peak to Peak

Output Impedance: 600 Ohm

Distortion: 0.5%

Triangle:

Amplitude: 0.05 - 4V AC Peak to Peak

Output Impedance: 600 Ohm

Linearity: 1%

Square:

Amplitude: 11V AC Peak to Peak

Rise time: 250 ns at 1KHz

Fall time: 50 ns at 1KHz

Package include:

1x Manufactured PCB 73x38 mm

1x XR2206CP IC

2x 1% Metal Film Resistor 5.1K

1x 1% Metal Film Resistor 10K

1x 1% Metal Film Resistor 10R

1x 1% Metal Film Resistor 3K

1x Trimmer Potentiometer 500R

1x Trimmer Potentiometer 30K

2x Rotary Potentiometer 10K

1x Rotary Potentiometer 100K

1x 1N4007 Diode

1x 100uF Electrolytic Capacitor

1x 10uF Electrolytic Capacitor

1x 1uF Electrolytic Capacitor

1x 100nF Ceramic Capacitor

1x 1nF Polyester Film Capacitor

1x 10nF Polyester Film Capacitor

1x 100nF Polyester Film Capacitor

1x 1uF Polyester Film Capacitor

1x DIP Socket 16 Pin

2x Jumper Cup

20x Pin of 2.54 mm Male Pin Header

The kit is can be used without calibration that may be relevant if you can't reach a oscilloscope. Without sine wave calibration it has 2.5% total harmonic distortion (THD). If you'll perform calibration process it will reach 0.5% THD.

The circuit and full PDF manual is included in the purchase. The manual has pictures of the assembling process and calibration instruction. The kit is require solder skills and basic electronics knowledge. However we can offer a technical support.

 
The board has jumper control for frequency range selection. 4 high quality polyester timing capacitors is provide each range:

• 20Hz- 100Hz
• 100Hz - 1KHz
• 1KHz - 10KHz
• 10KHz - 100KHz

If you'll install the function generator to project box it will be better to connect an external rotary selector and SPST button for sine/triangle waves toggle. External components and power supply are not included with the purchase. 

For more information please visit our webstore for DIY Electronics - www.radiohobbystore.com