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# Posts tagged Thevenin-theorem

### Synonyms: Helmholtz-Thevenin-theorem

Subtag of circuit-theory

Anything about Thévenin's theorem, a fundamental theorem in circuit theory and also a very useful tool in practical circuit analysis.

The theorem states that any linear, lumped-elements, 2-terminal electrical network is equivalent to a series of two circuit elements, a voltage source and a resistance (or impedance in AC or s-variable analysis), whose values can be determined from the original 2-terminal network.

The theorem can be generalized and is also valid in the s-variable domain (Laplace transform) or in the frequency domain (Fourier transform, phasors). In those cases the resistance is substituted by an impedance.

2 posts
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Design a suitable experiment and an AC circuit to verify Thevenin's theorem when the load is a single-phase induction motor with a capacitive start and two supplies feed the load. Ratings of load:...

0 answers  ·  posted 1y ago by dkumar94600‭  ·  edited 10mo ago by Lorenzo Donati‭

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I am calculating the base current of transistor Q1. To simplify the circuit equations, I applied the Thévenin's theorem twice and converted V1, R1 and R2 into Vth and Rth, as shown in the image. ...

2 answers  ·  posted 2y ago by kadamrohan16‭  ·  edited 10mo ago by Lorenzo Donati‭