Tuesday, June 18, 2019

Project: How to Build Function Generator using XR2206 IC

Eltronicschool. - This is one of project to build function generator using main IC component XR2206 look like shown in Figure 1. The main component in this project is used XR2206 IC and 7413 digital IC.

In this project will show you the circuit of function generator with Sine-Triangle-Square wave form. You can get the frequency range from 1HZ up to 1MHz. In this project we will give beside circuit schematic, we also will give you component are needed and also global description.

Circuit Schematic

Figure 1. Circuit schematic of function generator using XR2206 IC (Source: www.eleccircuit.com)

Component Part
  1. IC1___________LM7812 12V DC voltage regulator
  2. IC2___________XR2206 Function Genertor
  3. IC3___________LM7805 5V DC voltage regulator
  4. IC4___________SN74LS00 Nand gate IC TTL
  5. Q1___________ BC327 50V 800mA PNP Transistor
  6. Q2, Q3, Q4_____ BC337 50V 800mA NPN Transistor
  7. D1-D4_________ DB101 Diode bridge
  8. D5____________ 1N4148 75V 150mA Diodes
  9. R1, R2, R12______4.7K 1/4W Resistor
  10. R3, R4, R7, R9___ 27K 1/4W Resistor
  11. R5, R6, R16______1K 1/4W Resistor
  12. R8, R13_________2.2K 1/4W Resistor
  13. R10____________3.3K 1/4W Resistor
  14. R11____________ 100K 1/4W Resistor
  15. R14____________ 47ohm 1/4W Resistor
  16. R15____________10K 1/4W Resistor
  17. C1, C8__________ 1000uF 25V Electrolytic Capacitors
  18. C2_____________ 22uF 16V Electrolytic Capacitors
  19. C3, C7__________ 100uF 25V Electrolytic Capacitors
  20. C4_____________ 2.2uF 25V Electrolytic Capacitors
  21. C5_____________0.001uF 50V Polyester Capacitor
  22. C6_____________ 10uF 25V Electrolytic Capacitors
  23. C9_____________ 0.1uF 50V Polyester Capacitor
  24. C10____________ 470uF 16V Electrolytic Capacitors
  25. VR1, VR5 (Preset)__ 25K Potentiometer
  26. VR2 Volume______ 10K Potentiometer
  27. VR3 Volume______ 100K Potentiometer
  28. VR4 (Preset)______ 1K Potentiometer

Circuit schematic look like shown in Figure 1 above is function generator using XR2206 IC.  Eleccircuit site describe that the heart in working of this circuit is the IC XR-2206. All equipment except the power transformer 12 volts. We can assemble them onto the PCB, as shown below. You should solder correctly and successfully. After a successful check. Sure that the power supply to the circuit. And adjust the circuit.

The real application circuit as shown below It can be seen that the switches S1 to act as Frequency Range, which can be selected third range are.
1. 1-100 Hz
2. 100-10,000 Hz
3. 10,000-1,000,000 Hz

However, by selecting the capacitance value between pin 5-6.
First, adjust the frequency profile changing the value achieved by the VR3.

Next, VR2 is used to adjust the gain ratio of the circuit by fine with VR1 get the maximum output 1V. The VR5 is adjusted to balance the waveform.

Then, Switch SW2 is a select the signal output to a sine wave or sawtooth waveform.

Thank you for your coming here in www.eltronicschool.com site, we hope the article above will help you to know more about your an electronic circuit design and software in this time, etc. Please comment here when you want to share and other. Thank you.


  1. It's really good. If you have some electronic components missing, this is a headache, then this website can solve your troubles.URL:www.omo-ic.com

  2. Hello! I just want to provide a massive thumbs up for the wonderful information you’ve here for this post. I am returning to your website for additional soon. https://royalcbd.com/product/cbd-oil-1000mg/

  3. I am really enjoying reading your well written articles. It looks like you spend a lot of effort and time on your blog. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work.
    PMP Certification


Thank's for your reading in this article, please don't forget to comment.