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Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best-selling in Other Signal Sources & Conditioning
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The kit of parts is OK on the surface. If you check the circuit and components against the original manufacturer's data sheet, several of the components in this kit are of the wrong values. This leads to instability and poor control of settings. One problem is that the XR2206 Integrated circuit is not a genuine Exar chip but a copy. This can be put right in two ways 1) Buy a genuine XR2206 chip (approx £15) 2) Change component values as supplied to get the performance to a reasonable standard If you build it with some knowledge of electronics, you can use the kit as a base and what I suggest is not fitting any of the adjustment potentiometers to the PCB, but buy a small instrument case and mount the correct value of controls on the front panel. Change several components to the suggested values in the Exar data sheet including fitting one or two trimmer variable resistors instead of fixed resistors to adjust distortion of the sine wave output. On the Square wave output, there is a pull-up resistor of 1k ohms and this is recommended at 10k ohms on the Exar data sheet. Worth doing to cut the high current from this output into any equipment you may want to test as the high current can cause severe damage to, for instance, an audio amplifier. Also worth putting a small value electrolytic capacitor in series with the square wave output as this removes the high DC voltage offset in that signal, leaving you with a clean square wave around 0v. I will assemble with a rotary control instead of jumpers to change frequency ranges and a switch to change from sine to triangle wave instead of that jumper. With a few changes like this, the kit has a useful basis for a home-build function generator.Read full review
Verified purchase: No
Handy little signal generator. Comes with the case, but no leads and no power supply. My only major problem is, that the instructions are horribly translated. Often not understandable, and don't mention key details. Also, it can't deliver on the top and bottom of the frequency range, but it's pretty solid in the middle!
Verified purchase: Yes | Condition: New
Its quite a small unit and therefore easy to store it. The easiest way to identify the resistors in this kit is by using an ohm meter / multimeter as the coloured resistor bands are small. Its quite easy to build if you have some experience of soldering small circuits and mine worked first time without problems. If I could change anything I would like a deeper plastic case with space for a 9 volt battery to power it and a switch with LED so that you know when its on. Then it would not rely on a power adaptor and would be fully portable.
Verified purchase: Yes | Condition: New
Lovely little kit. Limited instructions but goes together well. Only down side is the amplitude control works counter clockwise. The coarse/fine frequency control works as expected. Good output. Good value kit.
Verified purchase: Yes | Condition: New
Being a newby to electronics and of limited finances, this kit provides you with not only a very nice kit to build in a beautiful acrylic case but something that will be of a lot of use also its reasonably priced. It's a win win situation. All things considered very happy with it and happy to recommend it.
Verified purchase: Yes | Condition: New
