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I have the big brother Hameg scope with a curve tracer. They are a pretty good little scope. There is a curve tracer that is a kit on ebay that works well. They are about $40 usd and they come with all you need to build it. You just need a box and a tranformer for the power supply. "BJT Transistor Curve Tracer Plus AC/DC Regulator Power Supply Unassembled Kit" I use the one I have for matching transistors and such for amp builds. I think they are well worth the $$ and hell,,, it's a fun little project.

Very smart idea pasting the diagram labels into Google Translate

Your Hameg makes my Hameg 203-6 look fancy (i.e. 2 channels) 😀 On mine it says "Component Tester" rather than "CT" Which I guess is a more appropriate limited claim of functionality... Google Lens on Android mobile phones is also handy for immediate translation

Why didn't you switch both channels on the digital scope to 0.5V/div instead of 1V/div?

Great video Bill, thanks. Handy tip, install Google Translate on your smart phone. You can use the camera function to point at foreign language text (e.g. Chinese) and you see the image on the display with English text. Saves a lot of cutting and pasting. Apologies if you get 2 comments from me. I posted my comment earlier, but it disappeared.

Thanks for the video. looks like i will have to get one to make my life even more frustrating 🙂Cheers Dave.

Hi, many thanks

More of a V I component tester than a true curve tracer , or does it have a stepped ramp generator to test three legged devices? I built one of these years ago but found I never used it. Grand video.

You had a perfect setup with the CT from the Hameg. Did you try to connect the adapter to the Hameg and then switch the Hameg to xy-mode? That should display the correct patterns. After that take a note of the Hameg settings and bring it over. to the Zoyi. I have the dual version of the adapter, had also experienced the difficulty you described but the above. This method brought me a bit closer, but I decided it was not worth the trouble, the Hameg is good enough for my use.

😮😊👌👏🥰🎯

Thanks Bill. Informative and well presented.

I may have missed it, but what voltage should the transformer be? What is the min/max that is acceptable? I have a few laying around that I might be able to use.

I learnt a lot about capacitors and the outer file from Mr Carlon's Lab. He explained it all in detail and in a language that was easy to understand, He is also a ham operator, as well as pretty darn good with electronics. It's definitely worth knowing about these things

Este ttrazador grafica filtros 1000 uf o de 220 uf en adelante le agradeceria su respuesta gracias

If you pass a zero to five Volt signal through a high value capacitor the result will go from -2.5 Volts to +2.5 Volts. (level shifting) Ron W4BIN

Do you have any information about modulation with this generator, or other similar equipment? Thank you.

Many thanks for the excellent well explained video.

Great stuff!

The unijunction transistor is also known as a double based diode and it is frequently used to fire SCRs. Ron W4BIN

Very good series ! I would be interested in oscillators with vaccum tubes... Do you plan to talk about tubes ?

I wouldn't be embarrassed about that resistor, you could make a running bit out of it!

Hello. Just one point, when used as an amplifier, or as phase shift oscillator, Its good to use the Zobel network on the output (pin 8) as you have done, but the resistor should be 2.7ohms NOT 2K7 !! Cheers B.

I ordered the 703 from Aliexpress but got the 702 instead with 2 probes.

If you use a carrier from AM or CW you wouldn’t have to say RRRRRRf 😂

"Bode plots" are mentioned a few times in this video, pronounced with a silent 'e'. However, the correct pronunciation is the way their inventor, Hendrik Bode, said his name, as "boh-dee".

Good video ty

In Germany, the switched off about all of the MW radio stations some years ago. Was that the case in the UK, too? Maybe it worked better back in the 70s just because of a more comprehensive set of radio stations?

I seem to remember being pleased with mine, the kit spent most of its time with this circuit. But likewise, it did work better after dark too.

Really enjoyed watching today's video. A three transistor radio that I built back in the day was from the take 20 series number 9. Really worked well. It used three BC169 transistors with good volume. Cheers Bill.

Bill, I don’t understand how you managed to misspell that companies’ name, but you managed. The company in Holland that it’s products are known in America (and possibly elsewhere) as “Norelco” has, but one “L” in it. They now sell many products under the Philips name also. (like my DVD player) Ron W4BIN

Bill, I don’t understand how you managed to misspell that companies’ name, but you managed. The company in Holland that it’s products are known in America (and possibly elsewhere) as “Norelco” has, but one “L” in it. They now sell many products under the Philips name also. (like my DVD player) Ron W4BIN

My parents gave me this brand new kit as a boy and I built many of the projects. They all worked flawlessly. This MW radio impressed me the most as it worked so well. I remember being very unhappy that I had to take it apart to make something else. My version of the kit was totally original and came from Philips in the Netherlands. It appears as if there is more than one version of the kit, which may explain the disparity in the results.

I remember doing that circuit and being able to receive MW radio quite well. What surprises me is that my Philips EE kit was from '71 and the transistors were all PNP germanium (two AC126 and one AF116), not silicon as in yours from '69 which is quite odd. Also the diode was a germanium OA90. It seems to me quite strange that an older kit sports newer technology than what was in mine...

Yes I had this set too and the two extension kits as well. I remember making that radio and yes it didn't work. I spent my whole life in electrics and antenna design. I'm now 68 and retired. But I'm still at it. Best 73 Paul G0MIH, HS0ZLQ.

On the 2D72 the software update time is inexcusable! Even after upgrading to the latest firmware using Hantek's DfuSe tool. The software will crash under some Time/Div settings. Absolutely horrible. Too bad I bought it years ago, so its impossible to return, lol

Thank u.

Great review sir! I already purchased 2 of these due to the good reviews and simplicity for my lower level HVAC/R service technicians, I still use my fluke 378FC that I have used for years. The Kaiweets multimeters look good and work well too. I have not been able to get/find support for my Kaiweets 602 meters I just purchased and brings it to why I have reached out to you, I am looking for A magnetic mount for this meter?? It looks like Kaiweets is A big up to date meter manufacturer so they must have one available or can at least suggest one that works with their products. Any pointers would be greatly appreciated, Thanks in Advance, Andy's Heating & Refrigeration.

SO, how much level does it need to work as a frequency counter??? I couldn't get it to read the oscillator in 2 short wave radios.Probably not enough level. It was about a $5 kit on Ebay here. Thanks.

Thank you very much. You made my day..!🙂

I paid $60 with one extra probe from Chinese taobao site. You can't beat its price. Years ago, a 50Mhz probe cost more than $100!

Great video! Thanks! Any recommendations on how to create the negative supply rail?

Finally, I've found a video that explains CLEARLY the basics of how to use this!!! Well done, you've helped one oscilloscope noob at least :-)

A very interesting video again Bill. Looking forward to the next part. Many thanks.

I haven't purchased one of these FY6900 units yet, but I am VERY close. Some interesting ideas for doing frequency sweeps for filter and Bode plot measurements. The FM modulation idea from fredsmith5473 looks promising. I was wondering about another idea... Let's say you set up a sweep on channel 1, for 10kHz to 100kHz, with a sweep rate of once per second. Then, on channel 2, you set up a square wave, with 1 Hz frequency. If you display both on a scope (triggering on the square wave), how will they appear relative to each each other? Will they drift relative to one another? Will they stay locked? Will the edges of the square wave be at some arbitrary position relative to the channel 1 frequency-sweep? If they drift, could you very slightly adjust the 1Hz square wave frequency so that the two waveforms stay in more-or-less sync? (Kind of like manually adjusting the time base on an old scope with no trigger. :-) )

I was also given a Philips EE kit in the late 60's. It was a probably earlier version of yours, with PNP Ge transistors (2 x AC126 + 1 x AF116), it didn't have wings or panel and different box (blue colour) and manuals. The spring mechanism was exactly the same. I was 13yrs old & now 70 and have been in electronics since that day, from crystal sets to rcommercial radio & TV transmitters. Thank you for sharing this with us, great memories right there ! Cheers, Baz from Oz

it seems that your CH1 probe is not compensated as it should...

Wow...what a good "cleaning job" the S. Trigger is doing. Amazing.

Thanks for sharing your knowlege mate! Your videos are really helpful. Greetings from mexico

Just found this channel about a week ago, I'm a software guy trying to learn about hardware, good stuff here!