A simple electronic muscle stimulator circuit

This is a circuit that stimulates nerves in the part of your body where the electrodes are usually connected. It helps relieve headaches and muscle discomfort, and restores frozen muscles that impair exercise. While it provides muscle stimulation and vitality, it primarily helps eliminate cellulitis. The device consists of 2 units: muscle stimulator and timer.

Figure 1 shows a circuit with a muscle stimulator. The IC 7555 is actually wired like an astable multivibrator to create pulses around 80Hz. The specific output involving IC1 is fed to transistor T1, whose emitter is actually further connected to the enable of transistor T2 via R3 and VR1. The audiophile stage of transistor T2 is connected to one end of the secondary of transformer X1. The other end of the transformer secondary winding is connected to ground.

Once IC1 oscillates, transformer X1 is driven by the frequency of the pulses actually generated, creating a high voltage in its main terminals. Separate electrodes are connected to each end of the primary rotation of transformer X1. Diode 1N4007 (D1) protects transistor T2 from high voltage pulses generated by the transformer.

Using the potentiometer VR1 you can control the intensity associated with the induction of current in the electrodes. The brightness level of LED1 shows the pulse amplitude. If you want to increase the strength level, replace the actual 1. 8 kilohm resistor with a higher value of 5. 6 kilohm or around 10 kilohm.

The X1 is a real small power transformer, 220V mains to 12V, 100/150mA sec. It must be connected in reverse, for example, connecting the secondary winding involving the collector of T2 with ground and the key winding on the output electrode. The production voltage is about 60V, but the output current is very small, and there is no risk of electric shock.

The electrodes consist of small plates of material approximately 2. 5?2 in size. Scale of 5 square centimeters. Use a conditioning wire to help solder the electrode and connect it to the output of the device. Wipe metal electrodes with a damp cloth before hanging them on your body. After fixing the electrodes to the body (with the help of elastic bands, flip the switch S1 to be able to activate your circuit while turning the actual knob involved in the intensity control scheduled VR1 very slowly until you feel a slight tingling sensation.

Figure 2 shows this timer world. It uses IC NE555 setup in monostable mode. Initially, once you press transition S2, the monostable and its specific output will go high around 10 minutes. After that, its output goes low, beeps in the piezo buzzer, and lights up the red LED (LED2), signaling the end of the excitement time.

Assemble a specific timer in the same cabinet as the stimulator using a separate switch as well as a 9V DC battery. Place the electrodes on both ends of the skin with the lean muscle of your choice and move the VR1 knob slowly unless you feel a slight itch when the muscle excitation circuit is normally energized. Immediately flip transition S2 to start a timer to count at any time. At the end of the actual timing period, the piezoelectric buzzer will beep. Each lesson should last approximately 10 units.