Coil internal short circuit test circuit
Source: InternetPublisher:3228 Updated: 2017/10/19
When a local short circuit occurs in the motor stator coil, it cannot be measured with a multimeter. The test circuit as shown in the figure can complete the internal short circuit test of the coil. Transistor VT, inductor coil L and capacitors C1, C2, etc. form a capacitive three-point oscillation circuit. When the measured sub-coil is connected across the A and B ends of the oscillation circuit, if there is no short-circuit fault, the measured coil shows high impedance, which does not affect the operation of the oscillator, and the mA pointer of the milliamp meter has no obvious movement. When the coil under test has a short-circuit fault, connecting it in parallel to ends A and B will cause the Q value of the oscillation circuit to drop, causing the oscillation to weaken or stop. At this time, the reading of the mA meter will drop rapidly.
Latest Control Circuits Circuits
- Analysis of the working principle of car garage door lights
- How to Make a Simple 2-Step Arduino Programmable Timer Circuit
- Tutorial on making your own remote-controlled robotic arm
- Tutorial for building a remote-controlled Arduino Air-Boat
- How to set up a cheap beam break sensor control distance scene using a reflector
- Design and principle analysis of practical electric curtain remote control device
- Hydraulic control circuit design and analysis
- Audio interface protection circuit
- A novel and practical power line anti-theft and cutting alarm circuit
- Ultra-short wave item left behind reminder alarm
Popular Circuits
- Homemade disinfectant circuit
- Multi-channel patrol detection control circuit a
- Assembly line outage monitoring circuit
- Haier KFR-25GW air conditioner control circuit schematic diagram
- Galanz rice cooker control circuit
- Range hood detection control circuit
- Small power electric heater temperature detection control circuit
- Electric heater temperature detection control circuit
- Voltage servo motor and control circuit
- Wide input range non-synchronous voltage mode control circuit