-=---=---=---=---=---=---=- Some specifications: Body resistance: 500 Ohm-Mega Ohms Stimulation current: 0.1 - 10 mA Pulse frequency: 1-100 Hz Pulse length: 50 - 250 microseconds Safe stimulation To make stimulation as safe as possible take into account the following items: Always stimulate below the waist. This makes it impossible to cause current to flow directly through the heart region. However, you should be aware of the fact that even impulses applied below the waist could be meaured in the heart region, however if energy levels are kept low (using a transformer and short pulses) this will cause no harm. For extra safety you should consider using an extra ground electrode by a pplying a copper wire around your body, slightly above your hips. By ground electrode I don't mean the ground level of earth, but the ground output of your stimulation box. More about this in the electrodes section. * Wear rubber gloves during each stimulation experiment, they are cheap, and safe you from the very unpleasant experience when you accidently touch one of the electrodes during stimulation. This causes a current to flow from your fingers through your whole body to the second electrode which is usually below the waist. Apart from possible heart problems, this produces heavy muscle contractions in you r arm muscles, because the intensity needed to stimulate muscles is much smaller than needed on your genitals. Gloves avoid this. * Use a transformer in the output stage of your stimulation box. This makes it possible to create isolation between the controlling circuit and your body and it limits the energy contents of each pulse (each pulse contains only the energy that is temporarely stored in the magnetic field of the transformer, which is usually on the safe side). Also according to my experience it produces the most pleasurable and controllable stimulation. This is because usually higher voltages occur at the beginning of an impulse, which will lead to a sudden change of body resistance to a lower value, resulting in a more stable intensity. * Use batteries for power! Using a well designed circuit this can produce more than enough power even if you are into pain. It is simply not worth it to risk your life! ----------------- The Electrodes: Properly designed electrodes are an essential for electro stimulation. If the electrode is too small or he contact is poor this will result in burning feelings or actually burned skin. To my opinion textile electrodes moistened with salt water are much better then those made of copper wire or aluminium foil. But since Erik the Rude and Hawk (see Homepage) have written so much about electrodes I only want to present two of my favoured ones: •A nice electrode for your penis can be made of a thin layer of foam rubber (about 1/2 cm) which is about 10 - 15 cm long and of the same width as the lenght of the penis. Two stripes of any textile which is well absorbing water (cotton etc.) are glued on the foam rubber and being connected with copper wires as it can be seen on the picture. An elastic bandage, which is 20 - 30 cm long is glued on the backside of the foam rubber. A bandage clamp is used to fix the electrode when applied to the penis. Moisten the textile stripes with salt water and wrap the the thing around your penis so that one electrode covers the base of the shaft and one the glans. •Another electrode I designed can be used for both anal and vaginal stimulation. It is made of a conventional butt plug from a sex shop. Two cotton electrodes are wrapped around the plug and glued on.They are connected to the amplifier by two copper wires (which should be as thin as possible for pleasant fit). These details can be seen on the graphic below. I have to note that this type of electrode should be cleaned very carefully and maybe disinfected after use, especially if it is inserted vaginally after anal use. That has both esthetical and medicinal reasons. Also the electrode should not carelessly shared by two or more persons because that is no safe sex. This is one of the few cases were condoms do not work. ----------- Some notes on the amplifier: In his article about electronic masturbation Hawk recommended not to use high-output stereo amplifiers for the reason of damage of the electronic device. I do not generally agree with his opinion. I have used my amplifier ( a sony high-end model) a lot of times without damaging it. Although I don't know very much about electronics, unusual impedances don't seem to cause any proplems and I read several articles from people using common stereo amplifiers, no one mentioned any damage done to them. I think there are two things you have to obey: 1. The amplifier should be properly grounded. Make sure that the device has a three-connector-plug and the socket in your wall has being correctly connected to the ground wire. And never touch any other plugged in device while you are wired. Thats for your own safety. 2. For the safety of your beloved amplifier check its technical specifications. It should be equipped with an automatic switch-off function when getting in an overloaded state by a short curcuit at the output channel. This could happen quite easy when the wires or electrodes are not isolated correctly against each other. If the amplifier doesn't switch off then automatically you will blow its transistors, maybe even its transformer. 3. Before you plug yourself in make sure, that the volume is set to zero. Raise the volume slowly, you can use the mute switch of the amplifier (normally a 20 dB damping) for a better control of the voltage runing through you body. If the electric circuit doesn't involve your heart or brain (actually not recommended) the electricity produced by a stereo amplifier (maximum voltage is about 45 - 50 V) can't be dangerous. But it can produce levels of intense pain, so be careful. Frequencies: Everybody has to test frequencies and waveforms for himself, but I would to write about the signal forms I like with the electrodes that have been decribed above: •At my penis frequencies at about 7000 Hz, not modulated, which produce an extreme sexual strain, sometimes better than an orgasm and over very long times. Generally I prefer higher frequencies, although I don't know why one can feel a difference between a 10 kHz and a 20 kHz signal, because nerve cells are only able to fire at a maximum rate of some hundred times per second. But definitely there is a difference. Higher frequencies tend to produce a warm feeling, maybe stimulating the heat-sensitive nerve cells. •Modulated signals are fine for a lot of purposes. My favorites are 5 - 15 kHz sine signals, which are modulated by a 2 - 5 Hz sine wave. Used with a anal or vaginal plug they produce involuntary muscle contractions which feel really amazing. Applied to the penis it's a feeling like being jerked off, but not exactly the same. =======================