Circuit diagrams and schematics - Electronic projects

The single-ended primary inductance converter (SEPIC) shown in Figure 3 IC LT1618 is ideal for applications where the output must reduce to zero during shutdown. The input current limit not only helps soft-start the output but also provides short-circuit protection, ensuring USB device compliance even under output fault conditions. Read More. Source: http://www.linear.com Related Links [...]

The supply works by shorting the inductor across the 12 volts through the regulator. This stores energy in the inductor. When the internal switch in the LT1170 goes off, the inductor is placed in series with the 12 volts, adding to it. This voltage pulse is stored in the output capacitor and smooths the output. [...]

This circuit is derived from an application note of LM2575, It is a Power Switching Regulator from National Semiconductor. National Semiconductor The details are here LM2575 An application note by On Semiconductor shows how this chip can be used to generate Negative Voltage Power Supplies from Positive Voltages. A Power Transistor which is having a [...]