Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Circuit diagram for controlling multiple lights with multiple switchCircuit diagram for controlling multiple lights with a single switch

The circuit diagram of air cooled air conditioner

What is a Shunt Resistor?Shunt resistance definitionA shunt resistor is a high-precision resistor that uses a very low ammeter resistance to measure the flow of current through a circuit. It is the resistance of a conductor in parallel with a circuit. Because of its particularity, it is generally used in precision electronic products. The smaller the resistance value of the shunt resistance, the more obvious the shunt effect.Shunt resistance characteristic Good structure High stabilityResistance

What is a Pull-up Resistor?Pull-up resistance definitionA resistor used in an electronic circuit to ensure the known voltage state of a signal.Basic structure of pull-up resistorWorking principleOn the wire to which the pull-up resistor is connected, if the external component is not enabled, the pull-up resistor "weakly" pulls up the input voltage signal. When the external component is not connected, the external "looks" high impedance to the input. At this time, the voltage at the input port ca

What is Light Dependent Resistor?Photoresistor definitionPhotoresistor is a kind of semiconductor device based on internal photoelectric effect, and its resistance value depends on the change of incident light intensity. With the increase of incident light intensity, the resistance value of photoresistor decreases, the incident light weakens, and the resistance value of photoresistor increases. The photoresistor has no polarity, and an external voltage in any direction is applied at both ends wh

What is a Variable Resistor?Variable resistor definitionResistor whose resistance can be adjusted as needed. It is a common component in electronic circuits that allows current or voltage to be adjusted according to Ohm's law.Basic structure of variable resistorA variable resistor usually has three terminals: two fixed terminals at the end of the resistance track and one removable terminal (cursor). Depending on how the terminals are connected to the circuit, a variable resistor can be used as a

What is a Cylindrical Capacitor?Cylindrical capacitor definitionA cylindrical capacitor is defined as a capacitor with a central conductor, an insulating layer, and an externally grounded metal cover.Basic structure of cylindrical capacitorIt is generally composed of two metal electrodes, an insulating medium and a shell.Working principle of cylindrical capacitorThe property of a capacitor to store electrical energy. When the capacitor is connected to the power supply circuit, ‌ after the chargi

The circuit diagram of Leakage alarm socket

The circuit diagram of protective connecting neutral

What is a Ceramic Capacitor?Ceramic capacitor DefinitionA ceramic capacitor is a widely used electronic component that uses a ceramic dielectric to store charge.Basic structure of ceramic capacitorMLCC is made of multiple ceramic layers separated by metal electrodes and has excellent high frequency performance.Ceramic capacitor advantages Various sizes The price is low. Light weight Withstand high pressure Reliable performance Can be used for hybrid integrated circuitsCeramic capacitor disadvant