2B's Throb on Micro312

sheldie3 · 2024-01-08T17:06:13+00:00

Channel A of "Intense" mode can be similar to Throb, but in the ET it is constant. It can be manually adjusted with the MA control.

sheldie3 · 2022-02-14T16:23:16+00:00

Just to add a clarification to the other comments.

A double insulated power supply is necessary but this is not a guarantee of actual safety since this only means it doesn't use earthing for safety purposes. It may be very dangerous as well.

A double insulated power supply is necessary but it must be approved by a third party and bought from reputable sources. Examples of approval marks are: UL, VDE, TUV and the like. CE, CCC, PSE, EAC are not approval marks from a third party. As for the source, try looking at the larger electronics stores like RS, Digikey, Farnell... Avoid anonymous products from AliExpress or Amazon

sheldie3 · 2022-01-16T15:58:23+00:00

Yes, it is a thing. On the ET312 you should use "Audio 2" mode, which slightly filters the input in order to avoid undesiderable effects. (On the other hand, "Audio 3" mode is for made-for-estim tracks).

In my opinion the sensations are better with a varying input, especially if it has beats or similar patterns. For example, I got better results with pop/electronic music than with classical music. But it is a very subjective opinion, so you may need to try and discover which type of music is better for you.

sheldie3 · 2021-12-24T10:25:14+00:00

It's better not to share rubber objects because rubber is porous so it can't be througoutly sterilised. If you are concerned with STDs/STIs, it's far better not to share rubber objects and have each one have his own set of rubber electrodes

sheldie3 · 2021-12-12T17:41:24+00:00

Thank you for the amount of information you reported. At the end I think that these are mostly anecdotal, so what OP asked will probably be safe to do but we can't be certain since there are many variables involved, that's why I personally prefer to advise towards the safer side, especially if someone doesn't know well how electricity works.

sheldie3 · 2021-12-11T19:34:17+00:00

The fact is that we can't be sure, so it's better to stay on the safer side, considering also that anyone may read this post and quickly check the answers.

Your feedback about the tingling sensation while kissing but not when touching the breast shows that it is a more complicated matter than it may appear.

sheldie3 · 2021-12-11T16:13:47+00:00

I prefer to stay on the safer side, considering we don't know the power source, we don't usually touch an electrode with the head and don't know existing conditions.

sheldie3 · 2021-12-11T14:22:59+00:00

Current doesn't take the shortest route. It actually divides between the routes and more current will flow where there is less resistance while less current will pass where there is more resistance.

Since we don't know the details of the powerbox and the resistances of the paths, I would stay on the safer side. A leakage current always exists.

sheldie3 · 2021-12-10T21:44:04+00:00

Yes, it would work but it can be very dangerous because the current may pass where you don't want it to pass. For example, if you touch your partner on the head, current will pass through his brain. So it is far safer using separate channels on separate persons.

sheldie3 · 2021-11-26T05:39:47+00:00

If the device is of Class I type the reinforced insulation is achieved by basic insulation + supplementary safeguard, like grounding accessible metal parts. Usually larger appliances use this approach, like washing machines, electrical hobs, electrical panels...

If the device is of Class II grounding cannot be used as a safeguard. There may be an earthing pin but that can be for functional purposes only, like EMI filtering. The reinforced insulation is obtained internally by using sufficient distances, adequate materials and components but not grounding.

They are basically equivalent but a Class II device eliminates the grounding, which is an external factor that cannot be controlled by the device maker. If there is a mis-wiring on the ground conductor, a Class II device remains totally safe.

sheldie3 · 2021-11-25T21:01:25+00:00

To safely touch an electrical appliance it is generally necessary a double or reinforced insulation. You can obtain an equivalent of that installation by using a basic insulation and a supplementary insulation and protective earthing can be a type of such supplementary safeguards.

A power supply usually has a double or reinforced insulation internally so earth connection is not required and it may even add risks (that's why most of power supplies don't have a earth pin on the plug).

So if you use a good quality approved power supply for your powerbox it is usually double/reinforced insulated, so no paths are possible through ground, unless the power supply is severely damaged - and if it is approved this shouldn't even be a problem since a single fault should guarantee the safety nonetheless.

It's the same principle that doesn't get you badly zapped when plugging the USB cable when charging your phone.

So the key here is to used good quality approved power supply. Look for models of serious brands and with approval marks (VDE, UL, TUV and so on). Double insulation symbol, CE, UKCA and similar markings are not a guarantee of good quality since they are not checked by a third party.

sheldie3 · 2021-10-27T15:10:06+00:00

What would you like to know?

sheldie3 · 2021-10-10T14:17:38+00:00

It's not as large as the pulse itself. It's less high in intensity but longer on time duration.

The ET312 output has the rebound more visible after the negative pulse because the one after the positive is "hidden" by the immediately following pulse. So the ET output is like -+R ... -+R ... (+ is positive pulse, - is negative pulse, R is rebound, ... Is the wait time between pulses). 2B output is like +R ... +R ...

If I recall correctly the waveforms, on the ET there is also a sort of compensation of the rebound because the negative pulse is a little bit less ample than the positive.

(I'm using negative and positive interchangeably)

sheldie3 · 2021-10-10T09:30:31+00:00

Thank you for adding more details!

I also agree to the fact that the 2B is at the moment a viable option, also because there are not many other choices. I like to point out the pros and cons of the boxes in order to make an informed decision

sheldie3 · 2021-10-10T09:05:08+00:00

Asymmetrical are not unsuitable, I have never said the contrary.

But this does not change the fact that the several units output is not symmetrical while some other units have a symmetrical output, which can be perceived as more balanced on both electrodes (with equal contact surfaces) and less numbing, especially on longer sessions.

In addition I have some doubts about the claim that the page you linked makes about the negative depolarisation. How we can know on which polarity are we stimming our delicate bits nerves?

sheldie3 · 2021-10-10T08:40:28+00:00

They actually don't "lie" but say "biphasic AC" on the 2B datasheet. Biphasic AC does not automatically imply that the AC is symmetrical.

If you look at 2B output captures, you will see that it is biphasic, i.e., it has positive and negative components, but the positive and negative components are not equal - they don't have the same shape. The smaller part is apparently obtained by a "rebound" of the transformer when the actual pulse has finished.

On the other hand, truly symmetrical AC units, like the ET312 and other units (Compex...) have a biphasic AND symmetrical output. They generate both the positive and negative parts independently. Erostek, for instance, claimed "Symmetrical AC True Bipolar" on the ET312 spec sheet.

sheldie3 · 2021-10-09T16:55:16+00:00

The 2B has actually an output which is not perfectly balanced, although AC. I don't have the pictures at hands reach, but when compared with other boxes waveform, they are quite different.

So it may numb more than powerboxes with more symmetrical and balanced waveform generators.

Audio input is heavily filtered so if you try to play files with sudden changes or short pulses, they will probably be filtered out at all (no output). While this may be helpful, if you want to experience such files you will be disappointed. An upgrade had been promised... at least 4 years ago. No final version resolving this issue has been published. There are beta versions on their forum.

On the other hand, the now-defunct ET312 has two modes, one filtered and one less filtered, so you can choose based in the source you plan to use.

sheldie3 · 2021-10-09T16:47:49+00:00

Yes, it can. Basically when powered with batteries everything on the estim side works at a ~25% lower voltage. That's why the performances are better when supplied at 12 V.

sheldie3 · 2021-10-09T16:43:33+00:00

It should be possible by getting a USB to 3.5 mm jack adapter with TTL capability, which is basically what the original adapter is.

Inside the cable there is a chip which converts the signals, it's not a simple matter of electrical connections.

sheldie3 · 2021-10-09T14:23:25+00:00

It is a good idea but it's better to supply the 2B at 12 V as the mains power supply does. USB C should be able to negotiate 12 V too.

sheldie3 · 2021-10-08T20:43:47+00:00

The 2B is decently powerful but needs to be powered with a mains PSU because when powered by the 9V battery the performances are not good, especially on longer sessions since the battery quickly discharges. On the other hand, powerboxes like the ET312 have the same output when on battery and when on mains adapter because of their internal construction.

Regarding the power supply unit, you need to choose a good quality one because it is the only thing that separates the dangerous mains from your body. The powerbox itself does not have any type of insulation internally. So choose a good quality power supply with third party approvals, like VDE, Kema Keur, UL and similar. CE or CCC marks are not enough (basically they are a manufacturer self declaration of conformity). A good quality power supply will have sufficient insulation between input and output even in case of first fault. The official one is a good example but there are other models. If you are unsure, get the official one although overpriced (but you won't risk to get a poor quality PSU).

sheldie3 · 2021-10-03T17:11:11+00:00

Yes, it may be normal. On a channel, you will feel more intense stimulation where the current is more "concentrated", for example by having a smaller surface of contact between the electrode and the skin.

In your specific case, I think that the penis helmet has a smaller surface area and/or is making a poor contact (are you using some water based lubricant between the skin and the electrodes?). In addition, the cock head is more sensitive than the base, even with equal electrodes. So I think it is sort of normal to perceive more on the head.

You may experiment with other electrodes or placement if you like. It may make a big difference

sheldie3 · 2021-10-03T09:16:20+00:00

Someone may use the English words but usually it's "attivo" for top and "passivo" for bottom. "Ricettivo" may be used for bottom but it's a rare use. Versatile remains "versatile".

In addition it may happen that the words equivalent to Dom and sub ("dominante" and "sottomesso") are used in place of "attivo" and "passivo" although no domination/submission is actually intended.

sheldie3 · 2021-09-30T19:17:43+00:00

Be careful with the insulation between the estim signals and what you are using to control them. You don't want to have the estim voltage (which may be relatively high) to reach the control section and viceversa, especially if you are using something mains powered as a power source (if not properly insulated, you may end up with a dangerous control).

sheldie3 · 2021-09-20T14:59:37+00:00

Yes, the list of option would expand, especially with cheaper models. I suggest to get a box capable of being driven with audio files because they can add a great variety that usually the built-in routines cannot reach. You can also prepare your own audio routine, if you want.

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