The number of FM receivers that can be connected to a single FM transmitter depends on several factors, including the transmitter’s power output, the sensitivity and selectivity of the receivers, and the frequency allocation regulations in the area. In general, FM transmitters are designed to broadcast a signal that can be received by multiple FM … Read more
What is the difference between active sensor and passive sensor ? An active sensor emits energy or signals to interact with the environment and detect objects or phenomena. It actively transmits pulses of energy, such as radar or lidar sensors, and analyzes the reflected or emitted signals to gather information. A passive sensor detects and … Read more
To check a run capacitor, you can use a digital multimeter set to the capacitance measurement mode. Start by disconnecting the capacitor from the circuit to ensure accurate readings. Then, discharge the capacitor by shorting its terminals with an insulated screwdriver to prevent any residual charge. Next, connect the multimeter leads to the capacitor terminals. … Read more
Zero ohm resistors, despite their name, are used as jumper wires or bridges in electronic circuits where a connection needs to be made between two points on a printed circuit board (PCB). They have the appearance of resistors but essentially act as electrical pathways with negligible resistance. The primary purpose of a zero ohm resistor … Read more
Why is a BJT called a current controlled current source ? A BJT (Bipolar Junction Transistor) is called a current-controlled current source because its collector current (I_C) is primarily controlled by the base current (I_B). In an NPN transistor configuration, for example, an increase in the base current causes a proportional increase in the collector … Read more
The advantages of a Bipolar Junction Transistor (BJT) include high switching speed and efficiency in switching applications. BJTs are capable of operating at high frequencies, making them suitable for applications where rapid switching is required, such as in digital circuits and amplifiers. They also exhibit high current gain, allowing small base currents to control larger … Read more
To wire a Honeywell thermostat, first ensure the power to your HVAC system is turned off to prevent electrical shock. Remove the cover of the old thermostat and label the wires according to their terminal connections. Install the new Honeywell thermostat base on the wall, ensuring it is level. Connect the labeled wires to the … Read more
If a transformer is connected to a DC supply, it will not operate as intended. Transformers are designed to work with alternating current (AC) because they rely on the alternating magnetic fields induced by AC to transfer energy between the primary and secondary windings. When DC voltage is applied to the transformer, it generates a … Read more
A transformer is not typically used directly within a generator itself. Generators, whether they are AC or DC, function by converting mechanical energy into electrical energy through the principle of electromagnetic induction. In an AC generator (alternator), rotating coils (armature) within a magnetic field induce an alternating current (AC) in the windings. This alternating current … Read more
A lightning arrester is a device used to protect electrical power systems and equipment from damage caused by lightning strikes. It functions by diverting the high voltage surges generated by lightning to the ground, thus preventing them from passing through the electrical system. Lightning arresters contain components that can withstand and dissipate the high energy … Read more