The XR is a monolithic function generator integrated circuit capable of producing high quality sine, square, triangle, ramp, and pulse waveforms. This laboratory exercise will use the XR monolithic IC function generator. The manufacturer’s data sheet to analyze the requirements to set the frequency . The low-cost IC XR provides a very simple function generator with only a few external components. XR data sheet provides complete basic circuit for a.

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The frequency is changed by using a variable resistor. Function Generator with XR The output frequency can be modulated by an external voltage using the circuit shown at the right. The XR provides a square wave at dataasheet open-collector output, as well as a sine wave.

Function Generator with XR2206

With the component values shown above, the overlapping frequency ranges are shown in the following table: Although satasheet is an analogue IC, this project just made it into the Arduino section of my website because it uses an ATmega as a frequency counter and to drive an 8-digit 0. The XR has some interesting features that illustrate some of the topics mentioned in this page, so let’s examine this chip.

It’s small, power datasgeet, yet customizable through onboard 2 x 7 perfboard that can be used for connecting various sensors and connectors.

It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground. I found 10k and 0.


XR Function Generator

It is an irreplaceable tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors. Frequency control The frequency range is controlled with the timing capacitor connected between pins 5 and 6 of the XR and the timing resistors VR1, VR2 and R2 conencted in series between pin 7 and v.

All required circuit details are shown in the datasheet.

The amplitude setting at pin 3 is connected with fixed resistors, so the output voltage is always the same. The XR makes a quite passable sine wave.

Function Generator with XR

The output waveforms can be both amplitude and frequency modulated. I simply put the end of the whip antenna of the small pocket radio near the output of the XR, and got plenty of signal. In any case, do not exceed 3 mA from pin 7 or 8. At pin 3 to set the exact medium voltage and the output amplitude.

Arduino Prototype uses all standard through-hole components for easy construction, two of which are hidden underneath IC socket. Use a buffered potentiometer to test the dependence of frequency on VC.

It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc. With a pot of 2 megohms and a fixed resistor of 1 kOhm variation gives a ratio of 1 to and may include a range of 10 Hz to 20 kHz sweep.


When pin 9 is below 0. On the board, the outputs of the circuit were placed in small wire loops, where the signals can be picked up directly with alligator clips. The additional output at pin 11 also delivers a square wave with datasheeet same frequency. Pins 7 and 8 dztasheet held at 3 V, and more than 3 mA should not be drawn from them, so 1k is the minimum timing resistor.

This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils and inductors.

The actual sample structure differs in some details from the data sheet. For measurement purposes in the electronics laboratory is needed again and again signals of different frequency and waveforms. The 50k pot adjustment dagasheet also important. There are actually two timing resistors, and which one is used is selected by the level on pin 9.

R is the normal timing resisor, while RC handles the modulating current. It also analyzes transistor’s characteristics such as voltage and gain. The frequency xg2206 set by a capacitor, in the range 0. A datsaheet for testing the XR is shown at the right.

There are integrated circuits that produce sine waves, although they are really relaxation oscillators and the sine waves come from shaping a triangle wave. The chip is advertised to work down to 0.