pingevõimendust

Pingevõimendust, also known as voltage gain, refers to the ratio of the output voltage to the input voltage in an electronic circuit. It is a fundamental parameter used to describe the amplification capability of devices such as operational amplifiers, transistors, and amplifiers in general. A voltage gain greater than one indicates that the output voltage is larger than the input voltage, signifying amplification. Conversely, a voltage gain less than one means the output voltage is smaller than the input voltage, indicating attenuation.

The voltage gain is typically expressed as a dimensionless quantity, but it can also be represented in decibels (dB) for logarithmic representation, especially in audio and radio frequency applications. For instance, a voltage gain of 10 is equivalent to approximately 20 dB. The voltage gain of a circuit is influenced by its components and configuration. Factors like the gain of active components (e.g., transistors), resistor values in feedback networks, and transformer turns ratios all contribute to the overall voltage gain. Understanding and controlling voltage gain is crucial for designing circuits that perform specific functions, such as boosting weak signals or maintaining signal integrity.