It is very simple to construct and requires two identical complimentary transistors operate. So let us discuss how that is done.Ī push pull amplifier, commonly known as Class B amplifier is type of multistage amplifier commonly used for audio amplification of loudspeakers. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region.Īs mentioned in the features the S8550 transistor is commonly used in push pull configuration with Class B amplifier. This stage is called Saturation Region and the typical voltage allowed across the Collector-Emitter (VCE) or Collector-Base (VCB) could be 20V and 30V respectively. When this transistor is fully biased then it can allow a maximum of 700mA to flow across the collector and emitter. Since it is very high it is normally used for amplification purposes. It has a maximum gain value of 300 this value determines the amplification capacity of the transistor normally S8550. S8550 is a PNP transistor hence the collector and emitter will be left open (Reverse biased) when the base pin is held at ground and will be closed (Forward biased) when a signal is provided to base pin.
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