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The Tech Circuit’s mission is to better educate Appliance and HVAC Technicians in the area of electrical and electronics diagnostics and repair. There is clearly an need for this better education – and the effort is endless. Although I thoroughly enjoy this mission, it does take time to maintain TechCircuit.org and the Tech Circuit Youtube […]
Correct and Incorrect Terminal Block Connections For many 240v appliances that plug into a receptacle, there are two common types of power cords. One is old-style 3-wire cord and the other is a relatively new 4-wire cord. The 3-wire Cord The older-style 3-wire cord consists of L1, L2, and Neutral. The voltage difference between L1 […]
Intro This article, for beginning to experienced appliance technicians, explains some of the more commonly found 120v and 240v Appliance circuit topologies and describes how to perform their respective point to point voltage check diagnostics for brute-force isolating of failed components. Please note that this article is not or DIY (do it yourselfers), as it […]