Current Sense Transformers
1. What are Current Sense Transformers?
A current sense transformer is used to detect and measure the current in an isolated conductor or primary winding and generate a corresponding AC current in the secondary winding. Its frequency range is 2 Hz to 1 MHz, and its rated current ranges from 125 mA to 4000 A.
2. How do Current Sense Transformers Work?
It uses the principle of inductance to reduce the output current to a very small value while maintaining the voltage constant. The transformer has two windings: a primary and a secondary. The primary winding is connected in series with the line being monitored, and the secondary winding is connected to the measuring device. When current flows through the primary winding, a corresponding current is induced in the secondary winding. This allows the current in the line to be measured without interrupting the circuit.
3. What are the Types of Current Sense Transformers?
Flyback Current Sense Transformers
Buck Current Sense Transformers
Boost Current Sense Transformers
Forward Current Sense Transformers
Half-bridge Current Sense Transformers
Push-pull Current Sense Transformers
4. What are Current Sense Transformers Used for?
Current sense transformers are used in power supplies, motor drives, and other power control applications to detect and measure current. They are also used in power monitoring and protection circuits. These transformers have a high turns ratio between the primary and secondary windings, allowing them to detect and measure small amounts of current on the secondary winding side.