Professional foul stop the clock and get the ball back, rather than allow the opponent to run out the clock. In addition, there are specific rules governing obvious goal scoring opportunities called clear path fouls. The professional foul in rugby league embodies a similar concept to other sports, a deliberate breach of the rules in order to prevent a scoring opportunity. The penalty for this offence is 10 minutes in the sin bin. The majority of professional fouls are either holding down the tackled player after a break has been made in order to allow his teammates to reform in defence, interfering
Asymptotic gain model asymptotic gain approach has the advantage/disadvantage that it works whether or not you understand the circuit. Figure 6 indicates the output node, but does not indicate the choice of output variable. In what follows, the output variable is selected as the short-circuit current of the amplifier, that is, the collector current of the output transistor. Other choices for output are discussed later. To implement the asymptotic gain model, the dependent source associated with either transistor can be used. Here the first transistor is chosen. The circuit to determine the return ratio is shown in the top panel of Figure 7.