HVAC equipment manufacturers build units that can be applied with various voltages. Some applications utilize an input or supply voltage of 277-1-60. This power supply comes from a 460-3-60 (4-wire) ...

Most electronic equipment manufacturers specify nominal nameplate ratings for their products. Typically, these devices and/or systems are designed to operate within a ±10% voltage window. But voltages ...

AutomationDirect's power product line now includes buck-boost transformers from Jefferson Electric. Buck-boost transformers are designed to maximize the performance and life of electrical equipment, ...

Download this article in PDF format. If you search the internet for “transformer equivalent circuits,” you’ll get five pages of over 100 small circuit diagrams. Figures 1 and 2 show two typical ...

Use of buck-boost circuits in switching-regulator ICs. Considerations in level-shift circuit design. Switching regulators with internal level shifting. The magnitude of the negative voltage generated ...

Average current-mode control (CMC) requires that the total waveform of the current be reconstructed for the control loop. This article presents the steps required to select the transformer and how to ...