Testing a blend epilator with an oscilloscope

Hair Removal Methods Do-It-Yourself Electrolysis
#1

My 2nd machine, a Cosmomed device meanwhile 13 years old, seems to have a defect. Apparently the device can do flash and flash blend. It is actually said to to do sequential blend, but i doubt.

My ideas what kind of signal to expect are, however very unclear. My only information are some rough numbers in Bono’s book for traditional blend giving a range of (surprisingly high) voltages, and of course, it is straightforward to measure the galvanic component for a given load resistor, under the assumption that the blend component is realized as a current source.

Does someone know more? Is it possible to attach the epilator output directly to a scope without doing damage to the instrument? Physically this would be easy, because the needle holder has a BNC plug.

Thanks

Beate

#2

Beate, I do not know to answer your questions about the oscilloscope, but maybe I can ask a friend. I have to send a needle holder to be repaired.

Meanwhile maybe you can do the test suggested by Mr. Bono in his book. You could check the amount of lye is produced in a container with water and salt, depending on the number and size of the bubbles.
You could also see if you really have a flash in the Blend of the machine, making the test of HF with egg white.
Of course, this would not be as reliable as the reliability of the oscilloscope, but this can get a good idea.

Moreover, Mr. Bono stated clearly in his book that the heat produced by the HF is a catalyst to lye production.
Therefore, what is valid for single CD, should be modified when we using the Blend method.

Germany and its schools are very fortunate to have the privilege of being instructed by Michael Bono. I wish Spain would have been so fortunate. :cry:

#3

Which is something You with Your experience an know how might change, isn’t it? :wink:

BTW: starting with Bono’s text is really good. But we are in lack of more advanced topics than manual blend (which i still consider ideal as a starting point, although i did my exercises at home with that flash machine) being teached in order to remain competitive to the laser people.

If we’re on Bono’s book: i have been lucky to access a copy of his book by interlending it from the University of Hannover.

Best wishes

Beate

#4

I’ve never left my student status, dear Beate, and I fear that I will retire regretting not having learned more.

I could take a look at the homepage of the German Association of Electrology, and I liked the recommendations offered to consumers. This reveals a great work ethic. I wish I could speak German, this may allow me to be a member of the Association?

In considering the issue of increasing the speed of traditional blend, I totally agree. It is imperative, we can not use more than [size:17pt]one[/size] second for each hair.

One of the things I’ve never agreed that the Blend is more effective than thermolysis in any ways, slow Thermolysis or Flash. The Blend has other advantages, but I do not think it is more effective.

#5

Every scientist never leaves her student status but can, of course, share her experience to (other) students :wink:

. I wish I could speak German, this may allow me to be a member of the Association?

You’re talking of the DVEE, aren’t You? You might contact the Board of te Association. At least some of us speak english.

It is imperative, we can not use more than [size:17pt]one[/size] second for each hair.

which is possible even with something like a “blended” thermolysis (and quite often i whish i could set my Apilus to 0.5 s)

Best regards

Beate

#6

Yes, it´s DVEE. I love the clarification of the five errors.

Apparently this is a very recent Association, I hope and desire to increase its membership and become a great community.

#7

It is actually a fairly recent (November last Year) spin off from the older Fachverband driven by almost all former members of the board of the Fachverband.

#8

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Dear Beate,

I followed the instructions of Mr. Bono, as he explains in his book. I took pictures to look better, and this is one of the results of the experiment. Heating pattern for insertion superficial and shallow follicles with hair type: “vellus”.

I love the philosophy of DVEE. It is an excellent way to restore the lost prestige of Electrology. In my opinion you have fully grasped the concepts. All of us should follow the example of hummingbirds. They are an intelligent species that adapts to the environment and this allows them to survive. Thank you for contributing to this struggle. Hopefully soon you can work with a Apilus Platinum, in which case nothing would prevent you from being a real hummingbird. :wink:

#9

Dear Joana,

thanks for the compliment. Mhmm, looks as if i really had to buy some eggs in order to test not only my device but also some of my ideas.

I guess it’ll take at least a year until i am able to invest in the pure. Ok, that’s life. But there is still enough to learn with my current device, which has capabilities i cannot fully use (the short flash modes with high intensity).

Beate

#10

It is a way that eggs are not too expensive, do not throw away the yolks. You can make delicious puddings!

I would love to see the results of your experiments. Who knows? perhaps there is still some undiscovered and Hairtell be lucky enough to get the scoop. :slight_smile:

#11

Mhmm, very dangerous for my figure :wink:

BTW: i notice a subtle difference between the patterns produced by the two epilators: the heating pattern produced by the 27 MHz machine is a bit narrower. Is this accidental or is it systematic?

#12

If I remember correctly, the first pattern was the Sinchro mode (is a slow thermolysis in the Apilus Platinum)

The second pattern is the slow thermolysis of my old machine DE-6000 of SORISA.

However insertion was more superficial in the second pattern, showing that depth is an important factor to consider.

#13

You can definitely use a scope to look at the output of an epilator but I would not hook it directly with a BNC cable. Most scopes have a 10x (times ten probe) that reduce the voltage by a factor of 10. Also, I would connect the machine to a load resistor of about 1000 ohms and then put the probed across the resistor. Might have to play with the load resistor value. Scopes have a built in load resistor on their inputs of either 1 Meg Ohm or 50 ohms. 50 is probably too low and 1 Meg is probably too high. The 10x probes usually have a resistance of about 10 Meg so your load needs to be small compared to that. The galvanic signal will show up as a DC level and the thermolysis part will show up as an RF signal (13.56 MHz or lower). You should be able to see the two parts of the machine output change if it autosequences.

#14

Thanks very much. Do You have any idea on the order of magnitude of the values i have to expect?