- #1
Understanding Transistor Parallel Configurations
- Thread starter munna007
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Discussion Overview
The discussion revolves around the configuration of transistors in a circuit, specifically whether two transistors can be considered to be in parallel. Participants explore the definitions and conditions necessary for transistors to be classified as parallel, focusing on their connections and current sharing.
Discussion Character
- Debate/contested
Main Points Raised
- One participant expresses confusion about the classification of two transistors as being in parallel, seeking clarification.
- Another participant asserts that transistors must share collector or drain currents to be considered in parallel, suggesting visualization in a switching circuit for better understanding.
- A request for the reasoning behind the necessity of current sharing for parallel configuration is made.
- A participant describes a specific circuit configuration where the emitter of one transistor is connected to the collector of another, indicating that multiple power transistors can work in parallel to increase current capacity.
- There is a clarification that the bases of the transistors are not connected together, but rather the base of one is connected to the emitter of the other, which is highlighted as a point of confusion.
Areas of Agreement / Disagreement
Participants do not reach a consensus on whether the transistors in question are in parallel, with differing interpretations of the circuit configuration and the requirements for parallel operation.
Contextual Notes
There are unresolved aspects regarding the definitions of parallel configurations, the specific circuit connections, and the implications of current sharing that remain unclear.
- #2
bejoynp
- 28
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Hi
These transistors are not in parallel. Any transistors: BJT or FET must share Collector or Drain currents respectively in order to be in parallel. Try visualizing them in a switching circuit. It will be more clear.
These transistors are not in parallel. Any transistors: BJT or FET must share Collector or Drain currents respectively in order to be in parallel. Try visualizing them in a switching circuit. It will be more clear.
- #3
munna007
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bejoynp said:
can u please tell me the reason for this statement
- #4
bejoynp
- 28
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In the given circuit, The emitter of one transistor is connected to the collector of the other and the base of one is shorted to the other.
Please refer to the attached image.
here you can see multiple power transistors are working in parallel to increase the overall current capacity.
Please refer to the attached image.
here you can see multiple power transistors are working in parallel to increase the overall current capacity.
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munna007
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bejoynp said:
thanks for reply sir, but base of both are not connected together. base of one transistor is connected to emitter of other. (black dot is made there)
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