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Totem pole output what is
Totem pole output what is







totem pole output what is

The design requires a bipolar power supply (or an output capacitor).

totem pole output what is

This is why you see this design (or its variations ) used in output transformer less (OTL) amplifiers.

totem pole output what is

The totem pole design can be configured with cathode followers for an even lower output impedance. The main reason is the low output impedance. Now that we have identified the totem pole design as push - pull, why would you want to use it instead of the usual push pull design. This is common in switching power supplies but I have never seen it used in analog audio. It is possible to build a four phase push - pull design. If the output devices are driven by two (or more) signals of differing phase the design is push - pull. If all of the output devices (tube or transistor) are driven in phase with each other the design is single ended. There is always some confusion in unusual multiple tube designs as to whether they are single ended or push - pull designs. However it is not a single ended design, it is a push - pull design. We have shown that the totem pole design can be made from two single ended stages. Shown below is the evolution from a single ended output stage to the totem pole design. Most of the early solid state amplifiers used this configuration, some even stacked 4 stages on top of each other in an attempt to make up for the low breakdown voltage of the early transistors. Named for the fact that single ended stages are stacked on top of each other in “totem pole” fashion.









Totem pole output what is