multimeter

Security system maintenance and home appliance maintenance, car maintenance and other maintenance methods are basically the same, often with the help of a variety of …

capacitance

A capacitor is an energy storage element used in circuits for tuning, filtering, coupling, bypassing, energy conversion and delay. Capacitor is usually called capacitor, according …

triode

Triode, full name should be semiconductor triode, also known as bipolar transistor, crystal triode, is a kind of control current semiconductor device. Its function is …