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XR2206 High Precision Function Signal Generator DIY Kit Sine/Triangle/Square Output 1Hz-1MHz Adjustable Frequency Amplitude + Transparent Case Box

3.9 3.9 out of 5 stars 293 ratings
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Purchase options and add-ons

  • 🌟High Precision, can generate sine/triangle/square waveforms.
  • 🌟Output frequency range: 1Hz-1MHz and Adjustable frequency and amplitude.
  • 🌟Wide power supply range, use 9-12V external power or 9V battery(NOT Included).
  • 🌟This is a DIY kit with All are through hole components,easily assemble the Function Generator by yourself.
  • 🌟Sine wave parameters:Amplitude: 0-3V at 9V DC input; Distortion: less than 1% (at 1KHz); Flatness: +0.05dB 1Hz - 100kHz.
  • 🌟Square wave parameters: Amplitude: 8V (no load) at 9V DC Input; Rise Time: less than 50ns (at 1KHz); Fall Time: less than 30ns (at 1KHz); Symmetry: less than 5% (at 1KHz).
  • 🌟Triangle wave: Amplitude: 0-3V at 9V DC input; Linearity: less than 1% (up to 100 KHz) 10 mA.
› See more product details

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Onyehn XR2206 High Precision Function Signal Generator DIY Kit Sine/Triangle/Square Output 1Hz-1MHz Adjustable Frequency Amplitude + Transparent Case Box

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Product Description

Specifications:
Voltage Supply: 9-12V DC Input
Waveforms: Square, Sine & Triangle
Impedance: 600 Ohm + 10%
Frequency: 1Hz-1MHz

SINE WAVE
Amplitude: 0-3V at 9V DC Input
Distortion: Less than 1% (at 1KHz)
Flatness: +0.05dB 1Hz - 100kHz

SQUARE WAVE
Amplitude: 8V (no load) at 9V DC Input
Rise Time: Less than 50ns (at 1KHz)
Fall Time: Less than 30ns (at 1KHz)
Symmetry: Less than 5% (at 1KHz)

TRIANGLE WAVE
Amplitude: 0-3V at 9V DC Input
Linearity: Less than 1% (up to 100KHz) 10mA

Package Size: Approx. 12 * 8 * 2cm / 4.72 * 3.15 * 0.8in
Package Weight: 69g / 2.46oz

The welding installation considerations, follow these steps:
1. The components are welding the front board, from low to high principles, namely the first low welding components, such as, capacitor, resistor, diode, etc.
2.Welding IC socket, terminal blocks, finally power socket, adjustable potentiometer.
3.The back with a diagonal cutting pliers to cut short the pins as far as possible.

Debugging steps:
1After completion of welding on IC, XR2206, pay attention to the direction of IC, insert the might damage the chip!
2. check the IC whether against, such as anti please timely correction.
3. Insert the power supply, power supply for 5.5 * 2.1 port, inside outside is negative polarity. For 9-12 v power supply voltage. The waveform may not be stable for more than 12V.

Using the step
1. J1 jumper cap plug in, SIN/TRI blue terminals output sine wave (note J1, J2 can only insert one of)
2. J2 jumper cap plug in, SIN/TRI blue terminals output triangular wave (note J1, J2 can only insert one of)
3. SQU blue terminals output pulse
4. AMP : Sine wave, triangle wave amplitude adjustment
5. FINE : Frequency fine adjustment
6. Coarse : Frequency of coarse adjustment

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Customer reviews

3.9 out of 5 stars
293 global ratings

Customers say

Customers appreciate the value for money, functionality, and tool size of the product. They mention it's worth the $10, works fairly well, and is a simple and inexpensive device. Some are satisfied with the tool size. However, some customers have reported issues with the fit, quality, and missing parts. Opinions are mixed on the ease of assembly.

AI-generated from the text of customer reviews

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Value for moneyFunctionalityTool sizeEase of assemblyFitQualityMissing partsWaveform quality
17 customers mention "Value for money"13 positive4 negative

Customers appreciate the value for money of the product. They mention it's worth the $10, a simple and inexpensive device that can be used for basic troubleshooting tests.

"Great Value, easy to build, not completed yet with all my performance tests to confirm claims advertised. Will update as soon as testing is done...." Read more

"...BUT HEY - it's still worth the $10, and it's an excellent starter kit for a beginner!" Read more

"...It was very cheap and you get what you pay for, I'm not upset about it." Read more

"...However, the screws to assemble it were too short, making the case rather worthless." Read more

16 customers mention "Functionality"12 positive4 negative

Customers like the functionality of the product. They mention it works well after assembly, works great for inputing a low-voltage signal into their amplifiers when they need to work on them, and operates well at voltages above 12V and seems to have very little noise. The sine and triangle waves work OK, and it's a good test signal source.

"I installed the components in about an hour and it worked immediately...." Read more

"Kit assembly was easy and unit works well...." Read more

"...At the end of it the function generator was not even working, it could be because of the 8 header pins or I have done something wrong but based on..." Read more

"...in that it operates well at voltages above 12V and seems to have very little noise...." Read more

7 customers mention "Tool size"7 positive0 negative

Customers like the size of the tool. They say it's the right tool for those little jobs, a great little general purpose generator for the work bench, and a great electronic tool. Customers also mention that the steps are very brief but adequate for the actual project.

"...Building kits, builds valuable skills (soldering, de-soldering (fix your mistakes) Electronic knowledge..." Read more

"This can be the right tool for those little jobs...." Read more

"...Descriptions and steps were very brief but adequate for the actual project...." Read more

"Great little general purpose generator for the work bench. Frequency range is greater than advertised, which is nice...." Read more

34 customers mention "Ease of assembly"19 positive15 negative

Customers have mixed opinions about the ease of assembly of the product. Some mention it's simple to build, interesting, and easy to use. Others say the instructions lack clarity, are challenging, and omit information for an array of jumpers.

"...and consider writing an assembly guide but it is actually very simple to build. No its not as nice as my BK but it works for what I needed it for...." Read more

"I would not recommend this to a new kit builder due to the lack of clear instructions...." Read more

"Great Value, easy to build, not completed yet with all my performance tests to confirm claims advertised. Will update as soon as testing is done...." Read more

"Kit assembly was easy and unit works well...." Read more

22 customers mention "Fit"0 positive22 negative

Customers are dissatisfied with the fit of the product. They mention the screws are much too short, the IC has bent pins, and the translucent case doesn't fit the PCB properly. Some say the kit is too short and the box is a skin-tight fit.

"...The screws that mount the board to the bottom are way too short but mine also had a 20 pin socket for a 16 pin IC. Luckily I had a spare...." Read more

"...UPDATE: the kit was missing 2 jumper posts, the screws were much too short, the IC had bent pins. Got it working and tested it...." Read more

"...are flush cut on the bottom of the pc card, or it will not fit in the enclosure properly." Read more

"...the case rests on the top of some of the components and the screws aren't long enough to fasten the top panel to the back...." Read more

18 customers mention "Quality"4 positive14 negative

Customers are dissatisfied with the quality of the product. They mention some components are fragile and can be damaged easily. The acrylic case broke easily, and the instructions are poor. Some customers also say the IC pins were badly damaged and one side of the case was cracked.

"...was missing 2 jumper posts, the screws were much too short, the IC had bent pins. Got it working and tested it...." Read more

"...a 1k resistor were missing so I ended up using my own, the pins of the IC chip are bent, the IC chip socket is bigger so it was difficult inserting..." Read more

"On arrival the IC pins were badly damaged and the instructions are such a poor photocopy that they are nearly illegible...." Read more

"...Only took a couple hours and I was taking my time. It tested fine but I couldn't get the waveform to lock until I gave up on the 9v supply and went..." Read more

13 customers mention "Missing parts"0 positive13 negative

Customers are dissatisfied with the missing parts of the product. They mention it's missing 2 jumper posts, hardware, and a potentiometer.

"...thank you, frankUPDATE: the kit was missing 2 jumper posts, the screws were much too short, the IC had bent pins...." Read more

"...I noticed 2 capacitors and a 1k resistor were missing so I ended up using my own, the pins of the IC chip are bent, the IC chip socket is bigger so..." Read more

"Kit came missing parts, I contacted the seller and they agreed to ship me the two missing capacitors from China in 20-25 business days...." Read more

"...There is the matter of the missing pot (see the picture), so we’ll be returning this one as soon as the one we just ordered arrives...." Read more

7 customers mention "Waveform quality"0 positive7 negative

Customers are dissatisfied with the quality of the waveforms. They mention the control for the output amplitude is designed backwards, the sine wave output is slightly distorted, and the waveform isn't even symmetrical from top to bottom. The sine and triangle waveforms have a significant DC bias component, rather than being centered on.

"...are as advertised, however, the sine and triangle waveforms have a significant DC bias component rather than being centered on ground...." Read more

"...The control for the output amplitude is designed backwards - counterclockwise to increase, instead of clockwise...." Read more

"...Some of the resistor selections don't make sense. The amplitude knob works in reverse (I double checked my work)...." Read more

"...I have to look at the schematic as I notice something a bit odd with the amplitude control as you turn the know CW the amplitude decreased instead..." Read more

Parts are OK, if you get ‘em
4 out of 5 stars
Parts are OK, if you get ‘em
Just looked over this kit - the parts, layout, design and such are decent quality (my profession, so I should know); my use is replacing a much older simple generator, in a much bigger box, starting to fail, so I don’t have expectations beyond a grab-quick signal source for tweaking a project on my bench, or maybe setting up a rebuilt guitar amp, usually with a ‘scope, and I’m sure this will do just fine.There is the matter of the missing pot (see the picture), so we’ll be returning this one as soon as the one we just ordered arrives. (We’re assuming there will be a complete set of parts between the two.) I would have spec’ed and ordered parts and put this together on an in-house board, but for the price, it’s not even close to worth the effort.
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Top reviews from the United States

Russ Lewis
5.0 out of 5 stars The screws that mount the board can't be used.
Reviewed in the United States on March 16, 2020
Verified Purchase
Easy build. But there were a few problems. The screws that mount the board to the bottom are way too short but mine also had a 20 pin socket for a 16 pin IC. Luckily I had a spare. Only took a couple hours and I was taking my time. It tested fine but I couldn't get the waveform to lock until I gave up on the 9v supply and went with 12v. The frequency ranges aren't exact but they at least overlap so you can generate anything up to 1.25 Mhz (rated only to 1Mhz though). I took 50 pics during the assembly and consider writing an assembly guide but it is actually very simple to build. No its not as nice as my BK but it works for what I needed it for. Important note though, the XR2206 is made to drive a 600 ohm load so it may or may not perform well if you drive a low impedance load.
One person found this helpful
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Harry
4.0 out of 5 stars Simple and Inexpensive Function Generator
Reviewed in the United States on September 30, 2020
Verified Purchase
I would not recommend this to a new kit builder due to the lack of clear instructions.

Note: The kit came with a 8 pin header instead of a 10 for the frequency range selection

I did make some changes to my kit as I was building it:
(There is a video on YouTube describing this where I gleaned some of my changes from)

- Used a higher quality IC socket for the IC.
- Rewired the Amplitude Pot since mine was backwards .
- Put a 50K Resistor across the Amplitude Pot to lower the output, since the waveform was flat topping.
(I may replace this with a lower value to lower the output more since it's about 5v output now)
- Replaced C3 With a 1uf cap as per the data sheet for the IC
- Replaced R3 & R5 with a 1K Resistor each to lower the output
- Replaced R1 with a 5K Resistor to lower the Square wave output (could have gone larger to lower further)
- Installed a 10uf Cap in line with the Sin/Tri output to block the DC
- Installed a 10uf Cap in parallel with R5 to help stabilize the output

Over all it's good for what it is "A inexpensive (AKA Cheap) Function Generator)

With a little work it can be made better but for the price it's a handy little piece of gear.
13 people found this helpful
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Frank
3.0 out of 5 stars Very Pleased So Far Update Post Testing
Reviewed in the United States on January 29, 2020
Verified Purchase
Great Value, easy to build, not completed yet with all my performance tests to confirm claims advertised. Will update as soon as testing is done. If still pleased, will order more for the student science classroom. thank you, frank
UPDATE: the kit was missing 2 jumper posts, the screws were much too short, the IC had bent pins. Got it working and tested it. All seems to be working now, not very accurate, but it does work. Should place a .01 capicator at the signal output if using a scope to test it.
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systemguy
5.0 out of 5 stars Good Product, However...
Reviewed in the United States on February 2, 2021
Verified Purchase
I installed the components in about an hour and it worked immediately. The waveforms are as advertised, however, the sine and triangle waveforms have a significant DC bias component rather than being centered on ground. With a 12 volt supply voltage, the waveform midpoint is at about 7 volts. That means that you can't put the output directly into headphones or anything similar because the DC bias will prevent normal operation or could even damage earphones. A typical solution is to use back-to-back electrolytic capacitors in the signal output wire to AC couple the signal. I used two 2200 uF electrolytic capacitors that I already had, each rated at greater than the 12 V power supply. It would have worked fine with a high impedance load with much smaller caps. The negative (stripe) sides of the caps are connected together, and the signal and load wires are connected to the the two outside wires. This approximates a large non-polar capacitor. The output is then AC coupled and close to centered on 0 Volts.
There is an error in the schematic provided in the instructions that doesn't matter unless you use it to debug the circuit. The frequency range jumper is shown with 4 pairs of header pins and C7 and C8 are shown wired together. In actuality, there are 5 pairs and the last two pairs are connected separately to C7 and C8. The circuit as shown would only have 4 ranges and one of the pairs would not be connected. The highest range would not be available either.
6 people found this helpful
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william van wyck
5.0 out of 5 stars Great electronic tool.
Reviewed in the United States on January 25, 2021
Verified Purchase
Kit assembly was easy and unit works well. If you build one, make sure all mounted component leads are flush cut on the bottom of the pc card, or it will not fit in the enclosure properly.
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JP
1.0 out of 5 stars Incompetent vendor from a potentially decent product.
Reviewed in the United States on March 21, 2020
Verified Purchase
I bought this kit for educational purposes but there was just so many things wrong when I was working on it.

The manual was missing so I had to look up an online version but ended up seeing the schematic from one of the reviewers (thank you Bradeen). I noticed 2 capacitors and a 1k resistor were missing so I ended up using my own, the pins of the IC chip are bent, the IC chip socket is bigger so it was difficult inserting and soldering it when R6 was already soldered on. I see others' header pins were 10 while mine are 8.

I should have returned it but I was halfway done. At the end of it the function generator was not even working, it could be because of the 8 header pins or I have done something wrong but based on how this product was poorly handled for me - this failure is on the vendor as well. You cannot ship a product with missing, damaged, and incorrect components - that is just wrong.

If you are looking for a kit, buy it somewhere else because this was just a waste of $13.
Customer image
JP
1.0 out of 5 stars Incompetent vendor from a potentially decent product.
Reviewed in the United States on March 21, 2020
I bought this kit for educational purposes but there was just so many things wrong when I was working on it.

The manual was missing so I had to look up an online version but ended up seeing the schematic from one of the reviewers (thank you Bradeen). I noticed 2 capacitors and a 1k resistor were missing so I ended up using my own, the pins of the IC chip are bent, the IC chip socket is bigger so it was difficult inserting and soldering it when R6 was already soldered on. I see others' header pins were 10 while mine are 8.

I should have returned it but I was halfway done. At the end of it the function generator was not even working, it could be because of the 8 header pins or I have done something wrong but based on how this product was poorly handled for me - this failure is on the vendor as well. You cannot ship a product with missing, damaged, and incorrect components - that is just wrong.

If you are looking for a kit, buy it somewhere else because this was just a waste of $13.
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4 people found this helpful
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DC
4.0 out of 5 stars It works.
Reviewed in the United States on January 3, 2021
Verified Purchase
Although I haven't fully documented the performance of this kit, at least it came with a functioning IC -- as opposed to two kits that came from a different vendor, that both arrived with inoperative IC's. In fact, the chip that came with this version seems to be a genuine chip (as opposed to a clone that seems to come with some versions of this kit), in that it operates well at voltages above 12V and seems to have very little noise. The only reason for the four stars is that the case that comes with the kit doesn't fit; it is too short. Even with the components mounted as close as physically possible to the board, the top of the case rests on the top of some of the components and the screws aren't long enough to fasten the top panel to the back. If you don't need to mount it in the case that comes with it, the fit seems fine. Assembly directions are pretty sketchy but there is lots of help available on line if needed.
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