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The simple addition of a transistor and resistor to the open-circuit drive overcomes this dilemma by limiting current through the drive transistor. Transistor Q2 provides the open-collector drive ...
Figure 5. The detection impedance resistor (R51) of a simple, Class 0, PD interface circuit Classification : How much power will you be needing? During the classification phase, the PSE uses the ...
The interesting portion of the Wien bridge is the gain portion of the circuit. It’s just a simple resistor divider, with a light bulb thrown in on one of its legs.
A simple circuit uses one control device to control bass and treble simultaneously, with a symmetric response that is flat at the center of the adjustment range.
LED output is a function of the current through it. So to drive the device, it would seem simple enough to set the LED current with a series power resistor.
Current sensing devices are often desired in the power supply lines of various circuits, such as battery-powered computers, battery chargers or critical circuits requiring thermal forecasting. Figure ...
Coming from an IT background to an AM transmitter site might leave you with a world of questions. Mark Persons explains the basics.
Thankfully, there’s a simple three-component circuit that works way better. In this power path circuit, a P-FET takes role of one of the diodes, with a resistor opening the FET while the charger ...
Automotive gauges are simple and have changed little in the last 100 years. Understanding how they function can make troubleshooting a snap. Some background on the basic principles of gauge operation: ...