Bisexuals are men and women who achieve sexual or erotic attraction to members of both sexes. Usually, but not always, the bisexual person engages in sexual activity with partners of both sexes. Slang terms referring to bisexuals are "AC/DC" (based on the term used to describe two types of electrical current), "switch-hitters" (a baseball term describing a batter who hits from either side of home plate depending on who's pitching), or people who "swing both ways" (another baseball phrase, but may also relate to swinging as sexual behavior). Little to No Study on Bisexual Behavior Compared to heterosexuality and homosexuality, very little scientific study has been conducted on bisexuality. Based on the studies that have been done, it appears that bisexuals are not people whose orientation is fundamentally homosexual but who have some heterosexual sex on the side. Nor are they people whose orientation is fundamentally heterosexual but who enjoy homosexual sex on the side. Top 10 Natural Ways to Boost Libido

The Ultimate Sex Quiz Top 5 Science of Sex Appeal Videos Also, fundamentally, they are not people who, at one point in their lives, engage in sexual behavior with persons of one sex and then, at another point, engage in sexual behavior with persons of the other sex, although this pattern of sequential changes is sometimes called transitional bisexuality. outside air conditioner unit partsRather, bisexuals are people who are sexually attracted to persons of both sexes during the same general time period in their lives.cost to install window ac unit It is thought that people develop and experience bisexuality in a number of different ways. window ac units room sizeFor some it begins as a form of experimentation that adds a spark to their sex lives, but it does not become the main arena of sexual activity.

For others it is a deliberate choice to participate in whatever feels best at the moment.How Do Servo Motors Work This little motor is high in efficiency and power Servo motors have been around for a long time and are utilized in many applications. They are small in size but pack a big punch and are very energy-efficient. These features allow them to be used to operate remote-controlled or radio-controlled toy cars, robots and airplanes. Servo motors are also used in industrial applications, robotics, in-line manufacturing, pharmaceutics and food services. But how do the little guys work? The servo circuitry is built right inside the motor unit and has a positionable shaft, which usually is fitted with a gear (as shown below). The motor is controlled with an electric signal which determines the amount of movement of the shaft. What's inside the servo? Hitec HS-322HD Standard Heavy Duty Servo To fully understand how the servo works, you need to take a look under the hood.

Inside there is a pretty simple set-up: a small DC motor, potentiometer, and a control circuit. The motor is attached by gears to the control wheel. As the motor rotates, the potentiometer's resistance changes, so the control circuit can precisely regulate how much movement there is and in which direction. When the shaft of the motor is at the desired position, power supplied to the motor is stopped. If not, the motor is turned in the appropriate direction. The desired position is sent via electrical pulses through the signal wire. The motor's speed is proportional to the difference between its actual position and desired position. So if the motor is near the desired position, it will turn slowly, otherwise it will turn fast. This is called proportional control. This means the motor will only run as hard as necessary to accomplish the task at hand, a very efficient little guy. How is the servo controlled? The guts of a servo motor (L) and an assembled servo (R) Servos are controlled by sending an electrical pulse of variable width, or pulse width modulation (PWM), through the control wire.

There is a minimum pulse, a maximum pulse, and a repetition rate. A servo motor can usually only turn 90 degrees in either direction for a total of 180 degree movement. The motor's neutral position is defined as the position where the servo has the same amount of potential rotation in the both the clockwise or counter-clockwise direction. The PWM sent to the motor determines position of the shaft, and based on the duration of the pulse sent via the control wire; the rotor will turn to the desired position. The servo motor expects to see a pulse every 20 milliseconds (ms) and the length of the pulse will determine how far the motor turns. For example, a 1.5ms pulse will make the motor turn to the 90-degree position. Shorter than 1.5ms moves it to 0 degrees, and any longer than 1.5ms will turn the servo to 180 degrees. Variable Pulse width control servo position When these servos are commanded to move, they will move to the position and hold that position. If an external force pushes against the servo while the servo is holding a position, the servo will resist from moving out of that position.

The maximum amount of force the servo can exert is called the torque rating of the servo. Servos will not hold their position forever though; the position pulse must be repeated to instruct the servo to stay in position. Types of Servo Motors There are two types of servo motors - AC and DC. AC servo can handle higher current surges and tend to be used in industrial machinery. DC servos are not designed for high current surges and are usually better suited for smaller applications. Generally speaking, DC motors are less expensive than their AC counterparts. These are also servo motors that have been built specifically for continuous rotation, making it an easy way to get your robot moving. They feature two ball bearings on the output shaft for reduced friction and easy access to the rest-point adjustment potentiometer. Servos are used in radio-controlled airplanes to position control surfaces like elevators, rudders, walking a robot, or operating grippers. Servo motors are small, have built-in control circuitry and have good power for their size.