Statement : Any combination of linear bilateral circuit elements and active\u00a0sources, regardless of the connection or complexity, connected to a given load\u00a0RL, may be replaced a simple two terminal network consisting of a single voltage\u00a0source of volts and a sing resistance RTH in series with the voltage source, across\u00a0the two terminals of the load voltage VTH is the open circuit voltage measured\u00a0at the two terminals of interest, with resistance RL removed. This voltage is also\u00a0called Thevenin’s equivalent voltage. The RTH is equivalent resistance of the given\u00a0network as viewed through the terminals where connected, but with RL removed\u00a0and all the active sources are replaced by their internal resistances.\u00a0If the internal resistances are not known then independent voltage sources are to\u00a0be replaced by the short circuit while the independent current sources must be\u00a0replaced the open circuit.<\/p>\n
I V
\nR R L
\nTH
\nTH L
\n=
\nWhen the circuit is replaced by Thevenin’s equivalent across the load resistance,\u00a0then the load current can be obtained as
\n71<\/p>\n
Steps to Apply Thevenin’s Theorem<\/strong><\/p>\n Step 1: Remove the branch resistance through which current is to be calculated.<\/p>\n Step 2 : Calculate the voltage across these open circuited terminals, by using any\u00a0of the network simplification techniques. This is VTH<\/p>\n Step 3: Calculate RTH as viewed through the two terminals of the branch from\u00a0current is to be calculated by removing that branch resistance and replacing all Step 4 : Draw the Thevenin’s equivalent showing source VTH, with the resistance\u00a0RTH in series with it, across the terminals of branch of interest.<\/p>\n Step 5 : Reconnect the branch resistance. Let it be RL.<\/p>\n Limitations of Thevenin’s Theorem<\/strong><\/p>\n The limitations of Thevenin’s theorem are,<\/p>\n 1. Not applicable to the circuits consisting of nonlinear elements. Thevinen Theorem Notes Statement : Any combination of linear bilateral circuit elements and active\u00a0sources, regardless of the connection or complexity, connected to a given load\u00a0RL, may be replaced a simple two terminal network consisting of a single voltage\u00a0source of volts and a sing resistance RTH in series with the voltage source, across\u00a0the two terminals of … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":""},"categories":[4773],"tags":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/28671"}],"collection":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/comments?post=28671"}],"version-history":[{"count":0,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/28671\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/media?parent=28671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/categories?post=28671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/tags?post=28671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nindependent sources by their internal resistances. If the internal resistances are not\u00a0known then replace independent voltage sources by short circuits and independent
\ncurrent sources by open circuits.<\/p>\n
\n2. Not applicable to unilateral networks.
\n3. There should not be magnetic coupling between the load and circuit to be replaced\u00a0by Thevenin’s theorem.
\n4. In the load side, there should not be controlled sources, controlled from some\u00a0other part of the circuit.<\/p>\n","protected":false},"excerpt":{"rendered":"